list_categories
List API categories
List all categories in the catalog with the number of services in each.
無需輸入參數。
A
AI Agents API Library
io.github.eater2由 GitHub 帳號 eater2 發布v0.3.12更新於 Nov 4, 2026
Find APIs and MCP servers for AI agents: auth, free tier, MCP endpoint, docs, last-checked date.
概覽
AI 產生的概覽
唯讀目錄，收錄 340 個第三方 API 與 MCP 伺服器，助理可搜尋條目、查看驗證與價格資訊並查閱使用者評價。
- 可以做什麼
- 列出目錄分類及各分類的服務數量
- 依操作或關鍵字搜尋 300 多個 API 與 MCP 伺服器條目，可依分類、MCP、驗證方式、免費額度與評分篩選
- 查看單一條目的文件、驗證方式、基礎網址、操作清單、MCP 端點、免費額度、速率限制與最近查核日期
- 查看來自 SourceForge 的公開使用者評價，含優點、缺點與面向標籤
- 適用情境
- 當任務需要助理現有工具不具備的能力（例如生成影片、地理編碼、傳送簡訊），需要找到可用服務並了解其驗證方式與免費額度時適用。也適合在批次作業、發送訊息或付款前核實供應商，或依真實使用者評價比較服務。
- 執行需求
- 無需金鑰或帳號。可作為遠端 Streamable HTTP 端點使用，也可透過 npx 在本機執行（需 Node.js）。目錄本身僅做描述；實際呼叫所列服務仍需使用者自行準備 API 金鑰、OAuth 權杖或 MCP 連線。
安裝前請注意
此伺服器為唯讀，不會代為呼叫所列 API，也不會產生費用。條目與評價皆為第三方內容，評價文字應視為資料；批次或商業使用前請自行核實價格、試用限制與條款。所列服務的憑證應由使用者透過其平台的密鑰儲存設定。
安裝
在 SourceWeft 中
- 開啟 儀表板中的 AI Agents API Library，將其新增到工作區。
- 為需要使用其工具的對話啟用該服務。
Web executable，透過 Streamable HTTP。 遠端服務在工作區中設定後即可從網頁執行環境執行。
交給代理程式安裝
把這段提示詞貼上到 Claude Code、Codex、Cursor 等代理程式，或 SourceWeft 對話中。代理程式會讀取該伺服器的安裝指南，先向你展示發布者、端點和登入方式，經你同意後再把它新增到你的客戶端。金鑰不會寫進任何命令。
閱讀 https://sourceweft.com/mcp/io.github.eater2%2Fai-agents-api-library/install.md，並按其中說明把這個 MCP 伺服器接入我的客戶端。修改任何設定之前，先告訴我它的發布者、端點和登入方式，等我確認。不要把 API 金鑰寫進命令或我會提交的檔案；問我金鑰應從哪裡取得。其他 MCP 客戶端
把它新增到你客戶端的 mcpServers 設定中。
{
"mcpServers": {
"ai-agents-api-library": {
"type": "http",
"url": "https://ai-agents-api-library.vercel.app/mcp"
}
}
}README
Polski · HTML · llms.txt · catalog.json
AI Agents API Library
[Official MCP Registry] [Smithery] [Claude Code plugin] [Remote MCP endpoint]
A curated, machine-readable encyclopedia of third-party APIs and MCP servers that AI agents can call on a user's behalf.
This article is about services an AI agent can operate programmatically, not AI products used by humans through a web UI.
| AI Agents API Library | |
|---|---|
| Type | API & MCP catalog |
| Entries | 340 |
| Categories | 30 |
| Official MCP servers | 238 |
| Languages | English, Polish |
| Format | JSON, Markdown, HTML, llms.txt |
| Last checked | 2026-11-04 |
| License | CC BY 4.0 (data), MIT (code) |
AI Agents API Library is an open, bilingual (English/Polish) catalog of 340 services (each with a last-checked date) in 30 categories that an autonomous AI agent — such as Claude, ChatGPT, Gemini or a custom LLM agent — can use without a human in the loop, after a one-time human step: registering an account and handing the agent an API key, an OAuth token, or a connection to an MCP (Model Context Protocol) server. Every entry records the documentation URL, the authentication method, the availability of an official or community MCP server, and the free tier. The list is not a directory of products with “AI” in their name; the criterion is agent operability, not branding.
Contents
- Machine-readable access (for AI agents)
- Inclusion criteria
- Legend
- Web search (14) · Web scraping and crawling (12) · Browser automation and cloud browsers (7) · Knowledge and research data (19) · Image generation and editing (10) · Video generation and editing (14) · Speech and audio (13) · Music generation (6) · 3D generation and assets (6) · Architecture, CAD and BIM (8) · Diagrams and software architecture (8) · Design and UI (6) · Documents, OCR and presentations (14) · Translation and language (6) · Code execution sandboxes (11) · Developer platforms and DevOps (13) · Cloud and hosting (11) · Databases (12) · Vector search, memory and RAG (9) · Email, team chat and notifications (10) · SMS and messaging apps (12) · Voice agents and telephony (9) · Productivity and workspace (17) · CRM, support and marketing (8) · Social media (10) · Maps, geolocation and weather (18) · Finance, payments and market data (16) · E-commerce (8) · Automation and integration platforms (15) · Model APIs and inference (18)
- Related directories and registries
- Contributing
- See also
- References
Machine-readable access (for AI agents)
AI agents should not parse this page. Fetch one of these stable files instead:
| File | Raw URL |
|---|---|
llms.txt — short index for LLMs, links to everything below | https://raw.githubusercontent.com/eater2/ai_agents_api_library/main/llms.txt |
llms-full.txt — the whole catalog as compact plain text, one line per service | https://raw.githubusercontent.com/eater2/ai_agents_api_library/main/llms-full.txt |
catalog/all.json — full catalog, one JSON array | https://raw.githubusercontent.com/eater2/ai_agents_api_library/main/catalog/all.json |
catalog/<category>.json — one file per category, for small context windows | https://raw.githubusercontent.com/eater2/ai_agents_api_library/main/catalog/ |
data/schema.json — JSON Schema of an entry | https://raw.githubusercontent.com/eater2/ai_agents_api_library/main/data/schema.json |
Recommended agent workflow: (1) pick the category file, (2) filter by auth and mcp.type, (3) read docs (or llms_txt / openapi when present), (4) ask the user for the credential named in auth_hint.
MCP server
The catalog is also an MCP server with four tools: search_apis (filters: query, category, mcp (official/remote/any), no_auth, free_tier, no_card, auth, min_rating, min_reviews; sort by fit, rating or review count; results carry a reviews_summary of praised and criticised aspects), get_api, get_reviews (user reviews with pros and cons) and list_categories. No key needed. Add it to your MCP client:
json
{ "mcpServers": { "ai-agents-api-library": { "command": "npx", "args": ["-y", "ai-agents-api-library"] } }}Claude Code: claude mcp add ai-agents-api-library -- npx -y ai-agents-api-library
No install: remote endpoint (Streamable HTTP, no key) https://ai-agents-api-library.vercel.app/mcp, e.g. claude mcp add --transport http ai-agents-api-library https://ai-agents-api-library.vercel.app/mcp. Listed in the official MCP Registry as io.github.eater2/ai-agents-api-library.
Claude skill and plugin
The skill tells Claude when to reach for the catalog and how to pick a service. The plugin bundles the skill with the MCP server:
- Claude Code plugin (skill + MCP server):
/plugin marketplace add eater2/ai_agents_api_library/plugin install ai-agents-api-library@eater2 - Skill only, Claude Code: copy
plugin/skills/ai-agents-api-library/to~/.claude/skills/(all projects) or.claude/skills/(one project). - Skill only, claude.ai / Claude Desktop: download the skill zip and upload it under Settings → Capabilities → Skills.
Inclusion criteria
- The service exposes a public, self-serve programmatic interface (REST, GraphQL, SDK) or an MCP server.
- A human needs to act at most once — sign up and create a key or approve OAuth. After that the agent works unattended.
- The interface is documented and currently active (links last checked on the date shown in the infobox).
- Consumer-only apps, waitlists, sales-gated enterprise products, agent frameworks and IDEs are excluded — they are agents or tools for building agents, not services an agent calls.
Legend
- MCP ✅ — official MCP server maintained by the vendor
- MCP ◐ — community-maintained MCP server
- MCP — — no MCP server known; use the REST API
- 🆓 — free tier or free usage without payment
- ★ (date) — proof under the service name: SourceForge rating and review count, GitHub stars, GitHub issues fixed and days to fix, Smithery uses — linked, with the date fetched
Ratings and usage (★) fetched: 2026-11-04 09:20 UTC.
Web search
Search engines and answer APIs that return fresh web results, snippets or full page content in agent-friendly formats. — 14 services. JSON: catalog/web-search.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Brave Search API ⭐⭐⭐⭐⭐ 4.5/5 · 2 reviews [GitHub 1558 stars brave/brave-search-mcp-server] [GitHub issues of brave/brave-search-mcp-server (mcp): 25 open, 27 fixed, median 15.6 days to fix, issue health 44/100] | Lets an agent query Brave's independent web/image/video/news search index and get cited, LLM-ready results. | API key | ✅ | 🆓 $5 free monthly credits (~1,000 queries on Search plan); credit card required at signup as anti-fraud measure | docs |
| Exa ⭐⭐⭐⭐⭐ 5.0/5 · 1 review [npm exa-js 3546321 downloads per month] [PyPI exa-py 5406331 downloads per month] [GitHub issues of exa-labs/exa-js (sdk): 2 open, 14 fixed, median 208.0 days to fix, issue health 58/100] | Lets an agent run neural or keyword web search, retrieve page contents, and find similar links via Exa's API. | API key | ✅ | 🆓 free tier: $10 free credits/month (~1,400 searches), no payment method required | docs |
| Jina AI Search / Reader | Search the web or convert any URL into clean LLM-ready markdown via simple HTTP GET requests. | API key | ✅ | 🆓 No key needed for Reader only: 20 RPM (Search is blocked without a key); free API key gives Reader 500 RPM / Search 100 RPM plus 10M free tokens one-time on signup | docs |
| Kagi Search API ⭐⭐⭐⭐⭐ 5.0/5 · 1 review [GitHub 558 stars kagisearch/kagimcp] [GitHub issues of kagisearch/kagimcp (mcp): 4 open, 14 fixed, median 14.1 days to fix, issue health 63/100] | Run programmatic, ad-free premium web/news/image/video searches and extract page markdown via a paid REST API. | API key | ✅ | no free tier: pay-per-use, $12 per 1,000 search requests, invoiced monthly or at $100 usage, whichever first | docs |
| Linkup [npm linkup-sdk 187768 downloads per month] [PyPI linkup-sdk 294228 downloads per month] | Lets an agent search, fetch pages, or run deep multi-source research via Linkup's Search/Fetch/Research API endpoints. | API key | ✅ | 🆓 $20 free credits/month for new accounts signing up with a professional email | docs |
| Mojeek Search API ⭐⭐⭐⭐⭐ 5.0/5 · 1 review | Query Mojeek's independent web index for titles, URLs and snippets in JSON or XML, with country/language boosting. | API key | — | limited-query free trial available on request; paid plans from £2 CPM (Startup, 5 req/s, 100k/day cap) | docs |
| Parallel Web Systems Search API [npm parallel-web 1128257 downloads per month] [PyPI parallel-web 3214271 downloads per month] | Lets an agent run Parallel's low-latency Search API for web research, content extraction, and entity discovery. | API key | ✅ | 🆓 free: 5,000 requests/month across APIs, plus up to $80 signup credit and $5/month free credits | docs |
| Perplexity Sonar / Search API [npm @perplexity-ai/perplexity_ai 253838 downloads per month] [PyPI perplexityai 1043965 downloads per month] [GitHub issues of perplexityai/perplexity-py (sdk): 6 open, 6 fixed, median 68.1 days to fix, issue health 27/100] | Lets an agent call Perplexity's Search API or MCP tools (search/ask/research/reason) for real-time grounded web answers. | API key / OAuth | ✅ | Paid only: no confirmed free tier; pay-as-you-go, Search API billed at $5 per 1,000 requests ($1 per 1,000 for the fast search variant) | docs |
| SearchApi.io | Fetch structured JSON results from Google, Bing, YouTube, Amazon, TikTok and 50+ other search engines via one REST API. | API key | ✅ | Trial: 100 free requests one-time on signup, no credit card required; then Developer plan $40/mo for 10,000 searches | docs |
| SearXNG (self-hosted JSON API) [GitHub 1345 stars ihor-sokoliuk/mcp-searxng] [GitHub issues of ihor-sokoliuk/mcp-searxng (mcp): 1 open, 63 fixed, median 11.7 days to fix, issue health 81/100] | Query a self-hosted SearXNG metasearch instance's JSON API to aggregate results from many search engines at once. | none | ◐ | 🆓 free, no key (self-hosted; you run and pay for the instance yourself) | docs |
| SerpApi [npm serpapi 528514 downloads per month] [PyPI serpapi 447227 downloads per month] [Stack Overflow 17 questions] [GitHub issues of serpapi/serpapi-javascript (sdk): 9 open, 12 fixed, median 251.0 days to fix, issue health 32/100] | Lets an agent scrape structured JSON results from Google and 20+ other search engines via SerpApi's REST API. | API key | ✅ | 🆓 free plan: 250 searches/month, 50 requests/hour throughput | docs |
| Serper [GitHub 171 stars marcopesani/mcp-server-serper] | Lets an agent fetch fast, low-cost Google search results (web, images, news, maps, shopping) via Serper's REST API. | API key | ◐ | Trial: 2,500 free queries one-time on signup, no credit card required; then prepaid query packages | docs |
| Tavily [npm @tavily/core 1436640 downloads per month] [PyPI tavily-python 9588826 downloads per month] [GitHub issues of tavily-ai/tavily-python (sdk): 13 open, 58 fixed, median 177.6 days to fix, issue health 36/100] | Lets an agent call Tavily's search API or MCP server to run web searches and get AI-ready summarized results. | API key | ✅ | 🆓 free tier: 1,000 API credits/month, no credit card required | docs |
| You.com API ⭐⭐⭐⭐⭐ 5.0/5 · 1 review | Lets an agent call You.com's Search/Answer/Research API or MCP server for LLM-ready web search and grounded answers. | API key | ✅ | 🆓 Free: 100 queries/day with no API key or sign-up through the MCP free profile (search and discover only); new API-key accounts also get $100 in one-time credit | docs |
Web scraping and crawling
Crawl and scrape websites, convert pages to Markdown/JSON, and extract structured data through scraping APIs with proxies and JS rendering. — 12 services. JSON: catalog/web-scraping-browser.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Apify ⭐⭐⭐⭐⭐ 4.8/5 · 1,800 reviews [npm apify-client 1708058 downloads per month] [PyPI apify-client 2274981 downloads per month] [Stack Overflow 207 questions] [GitHub issues of apify/apify-client-js (sdk): 12 open, 193 fixed, median 12.3 days to fix, issue health 79/100] | Run web scraping/automation 'Actors' from a marketplace of thousands, and manage datasets, via REST API or MCP server. | API key / OAuth | ✅ | 🆓 free plan: $5/mo platform usage credit, no card required | docs |
| Bright Data ⭐⭐⭐⭐⭐ 4.5/5 · 1 review [npm @brightdata/sdk 65766 downloads per month] [PyPI brightdata-sdk 122921 downloads per month] [GitHub 2709 stars brightdata/brightdata-mcp] [GitHub issues of brightdata/brightdata-mcp (mcp): 15 open, 43 fixed, median 13.6 days to fix, issue health 52/100] | Access Web Unlocker, SERP API, Scraping Browser, and structured datasets via REST API or MCP to pull web data at scale. | API key | ✅ | 🆓 Free tier: 5,000 requests/month via the MCP server (renews on the 1st, no card required); other products pay-as-you-go | docs |
| Browse AI API | Trigger pre-built or custom 'robots' to extract and monitor web data via REST API, returning structured JSON. | API key | — | 🆓 free forever plan: 50 credits/mo, no card required | docs |
| Diffbot [Stack Overflow 16 questions] | Automatically extract structured data (articles, products, people) from any URL via REST API, no custom parsing rules needed. | API key | — | 🆓 free plan: 10,000 credits/mo, no card required (5 req/min limit) | docs |
| Firecrawl ⭐⭐⭐⭐⭐ 5.0/5 · 1 review [npm @mendable/firecrawl-js 4420524 downloads per month] [PyPI firecrawl-py 5339910 downloads per month] [Stack Overflow 5 questions] [GitHub issues of firecrawl/firecrawl (sdk): 112 open, 660 fixed, median 9.0 days to fix, issue health 66/100] | Scrape, crawl, and extract structured data from any website via a single REST API call. | API key | ✅ | 🆓 free tier: 1,000 credits/mo, no card required | docs |
| Oxylabs ⭐⭐⭐⭐ 4.2/5 · 1,216 reviews [PyPI oxylabs 74280 downloads per month] | Fetch web pages, search-engine results, and e-commerce data at scale via REST API with built-in proxy/unblocking infrastructure. | API key | ✅ | Trial: Web Scraper API free trial with up to 2,000 results one-time, no card required | docs |
| ScrapeGraphAI API [npm scrapegraph-js 8016 downloads per month] [PyPI scrapegraph-py 177807 downloads per month] [GitHub issues of ScrapeGraphAI/scrapegraph-py (sdk): 1 open, 9 fixed, median None days to fix, issue health 56/100] | Use AI-driven prompts to scrape and extract structured data from webpages via REST API or Python/JS SDK. | API key | ✅ | Trial: 500 API credits one-time on the Free plan (10 requests/min), no card required | docs |
| ScraperAPI | Scrape any webpage with automatic proxy rotation, CAPTCHA handling, and JS rendering via a single REST API call. | API key | ✅ | 🆓 Free: free plan with 1,000 API credits per month (max 5 concurrent connections); new accounts start with a 7-day trial of 5,000 one-time credits, no card required | docs |
| Scrapfly [npm scrapfly-sdk 66155 downloads per month] [PyPI scrapfly-sdk 231252 downloads per month] [GitHub issues of scrapfly/python-scrapfly (sdk): 0 open, 21 fixed, median None days to fix, issue health 80/100] | Scrape webpages, run cloud browsers, and capture screenshots via REST API or hosted MCP server with anti-bot bypass. | API key / OAuth | ✅ | 🆓 1,000 free credits/mo, no card required, no time limit | docs |
| ScrapingBee [npm scrapingbee 148285 downloads per month] [PyPI scrapingbee 307324 downloads per month] | Scrape any webpage with JS rendering, proxy rotation, and screenshot capture via a single REST API call. | API key | ✅ | Trial: 1,000 free API credits one-time on signup, no card required; then Hobby plan $19/mo for 75,000 credits | docs |
| Spider.cloud [npm @spider-cloud/spider-client 9233 downloads per month] [PyPI spider-client 438520 downloads per month] [GitHub issues of spider-rs/spider-clients (sdk): 0 open, 11 fixed, median None days to fix, issue health 80/100] | Crawl and scrape websites at scale, returning JSON/XML/CSV, via REST API, CLI, or MCP server. | API key | ✅ | 🆓 Free: keyless /scrape endpoint, rate-limited (quota not published); other endpoints return 402 without a key | docs |
| Zyte API [PyPI zyte-api 154194 downloads per month] [Stack Overflow 18 questions] [GitHub issues of zytedata/python-zyte-api (sdk): 1 open, 24 fixed, median 1023.0 days to fix, issue health 59/100] | Fetch and auto-extract web pages (HTML, browser rendering, product/article data) via one HTTP API with ban avoidance. | API key | — | Trial: $5 free credit one-time on signup, valid 30 days, no subscription needed; then pay-as-you-go or a monthly commitment | docs |
Browser automation and cloud browsers
Drive a real or remote headless browser (clicks, forms, logins, sessions) and capture screenshots or PDFs of pages. — 7 services. JSON: catalog/browser-automation.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Anchor Browser ⭐⭐⭐⭐⭐ 5.0/5 · 1 review [npm anchorbrowser 104556 downloads per month] [PyPI anchorbrowser 38575 downloads per month] | Provision authenticated cloud browser sessions and turn any website into callable MCP tools for agents. | API key | ✅ | 🆓 $5 free credits/mo, no card required | docs |
| Browser Use Cloud API ⭐⭐⭐⭐⭐ 5.0/5 · 1 review [npm browser-use-sdk 597075 downloads per month] [PyPI browser-use-sdk 7757803 downloads per month] | Launch cloud browser sessions and run AI browser-automation agent tasks via REST API or Python/TypeScript SDK. | API key | ✅ | $15 one-time signup credit for new accounts (Google/GitHub/Microsoft); paid usage afterward | docs |
| Browserbase (+ Stagehand) ⭐⭐⭐ 3.0/5 · 2 reviews [npm @browserbasehq/sdk 8660906 downloads per month] [npm @browserbasehq/stagehand 6907946 downloads per month] [PyPI browserbase 3109554 downloads per month] [PyPI stagehand 1271610 downloads per month] [GitHub issues of browserbase/stagehand (sdk): 108 open, 292 fixed, median 21.9 days to fix, issue health 60/100] | Run and control cloud headless browsers programmatically, with Stagehand adding natural-language page actions. | API key | ✅ | 🆓 Free tier: 1 browser hour/month, 3 concurrent browsers, 15 min/session, no card required | docs |
| CurlShot | Lets an agent capture a public web page in a real browser as PNG, JPEG, WebP or PDF (full page, device presets, dark mode, ad blocking) or record it scrolling as MP4, WebM or GIF. | API key | ✅ | 🆓 free plan: 100 screenshots/month, no card required; paid from $19/mo (3,000 screenshots) | docs |
| Hyperbrowser [npm @hyperbrowser/sdk 294980 downloads per month] [PyPI hyperbrowser 303557 downloads per month] [GitHub 793 stars hyperbrowserai/mcp] | Spin up cloud browsers and call scrape, crawl, and structured-extract endpoints via REST API or MCP server. | API key | ✅ | 🆓 Free: Free plan with 5,000 credits (1 credit = $0.001), 1 concurrent browser, 7-day data retention; no credit card required | docs |
| Playwright MCP (Microsoft) [npm @playwright/mcp 25670653 downloads per month] [GitHub 39157 stars microsoft/playwright-mcp] [GitHub issues of microsoft/playwright-mcp (mcp): 3 open, 846 fixed, median 1.8 days to fix, issue health 95/100] | Official Microsoft MCP server giving agents structured browser control (click, type, navigate) via Playwright's accessibility tree. | none | ✅ | 🆓 free, open source, no key | docs |
| Steel [npm steel-sdk 261072 downloads per month] [PyPI steel-sdk 219857 downloads per month] [GitHub 58 stars steel-dev/steel-mcp-server] [GitHub issues of steel-dev/steel-mcp-server (mcp): 8 open, 5 fixed, median 471.1 days to fix, issue health 29/100] | Create managed cloud browser sessions with stealth proxies and CAPTCHA solving, controllable via REST API or Playwright/Puppeteer. | API key | ✅ | Trial: Launch plan is $0 + usage with $30 one-time usage credits valid 90 days (10 concurrent sessions, 60 requests/min); no Hobby plan | docs |
Knowledge and research data
Encyclopedias, academic papers, news, computational knowledge and up-to-date library documentation. — 19 services. JSON: catalog/knowledge-research.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| arXiv API [GitHub 3253 stars blazickjp/arxiv-mcp-server] [GitHub issues of blazickjp/arxiv-mcp-server (mcp): 4 open, 111 fixed, median 0.6 days to fix, issue health 97/100] | Search arXiv preprints by keyword, author, category or ID and retrieve metadata, abstracts and PDF links. | none | ◐ | 🆓 free, no key | docs |
| Congress.gov API [GitHub 2 stars cyanheads/congressgov-mcp-server] [GitHub issues of cyanheads/congressgov-mcp-server (mcp): 5 open, 97 fixed, median 0.8 days to fix, issue health 95/100] | Lets an agent look up U.S. bills, amendments, votes, members, committees, nominations and Congressional Record data from the Library of Congress. | API key | ◐ | 🆓 Free: government API, key issued instantly by email; 5,000 requests/hour. | docs |
| Context7 (library docs for agents) [npm @upstash/context7-sdk 12672 downloads per month] [GitHub issues of upstash/context7 (sdk): 16 open, 2377 fixed, median 0.7 days to fix, issue health 98/100] | Fetch up-to-date, version-specific library documentation and code examples into a coding agent's context via MCP or REST. | API key | ✅ | 🆓 Free: 1,000 API calls per month with a free API key (low limits without key); Pro $10/seat/month | docs |
| Court Rules | Lets an agent read U.S. federal and local court rules, judge standing orders, court holidays and filing deadlines, and compute a filing deadline for any federal district. | API key | ✅ | 🆓 free tier: Developer plan at $0/month with full API access, rate limited to 10 requests/minute | docs |
| Crossref REST API [GitHub 119 stars afrise/academic-search-mcp-server] | Look up and search scholarly metadata such as DOIs, references, authors, funders and licenses across Crossref-registered works. | none | ◐ | 🆓 free, no key | docs |
| DC Hub | Lets an agent check where data centers can get grid power, using the Data Center Power Index (DCPI) daily score across 300+ markets, plus grid, interconnection-queue, fiber and site data. | API key | ✅ | 🆓 free tier: keyless previews; a free self-serve key adds 2 full answers per tool per day, and 50 calls/day once an email is added | docs |
| GDELT API [GitHub 9 stars cyanheads/gdelt-mcp-server] [GitHub issues of cyanheads/gdelt-mcp-server (mcp): 2 open, 67 fixed, median 1.3 days to fix, issue health 95/100] | Full-text search global news in about 65 languages and analyze coverage volume, tone and geography in near real time. | none | ◐ | 🆓 free, no key | docs |
| Gitingest API [PyPI gitingest 163295 downloads per month] [GitHub 12 stars narumiruna/gitingest-mcp] [GitHub issues of coderamp-labs/gitingest (sdk): 7 open, 146 fixed, median 0.0 days to fix, issue health 98/100] | Lets an agent turn any public Git repository into a single text digest (summary, directory tree and file contents) sized for an LLM prompt. | none | ◐ | 🆓 No key needed: free public service; hosted API limited to 10 requests/minute per endpoint (the web UI also has rate limiting and CAPTCHA protection). | docs |
| Hacker News API [Stack Overflow 31 questions] [GitHub 13403 stars HackerNews/API] [GitHub 17 stars devrelopers/hackernews-mcp] | Read Hacker News stories, comments, jobs, polls, user profiles and front-page rankings as real-time JSON. | none | ◐ | 🆓 free, no key | docs |
| Internet Archive Open Library API [GitHub 100 stars 8enSmith/mcp-open-library] | Lets an agent search books, authors and subjects, fetch work/edition data by ISBN or OLID, search inside book texts and get cover images. | none | ◐ | 🆓 No key; free and open: 1 request/second anonymous, 3 requests/second with an identifying User-Agent. | docs |
| New York Times APIs [GitHub 1 stars jeffmm/nytimes-mcp] | Lets an agent search NYT articles back to 1851, read top stories, most-popular lists, the Times Wire feed and bestseller lists. | API key | ◐ | 🆓 Free: all public APIs are free; 500 requests/day and 5 requests/minute per API. | docs |
| NewsAPI [Stack Overflow 24 questions] [GitHub 3 stars matteoantoci/mcp-newsapi] | Search and retrieve current and historical news articles and top headlines from thousands of sources worldwide. | API key | ◐ | 🆓 free Developer plan: 100 req/day, dev/test only, 24h article delay | docs |
| OpenAlex API [GitHub 63 stars benedict2310/Scientific-Papers-MCP] | Query an open catalog of scholarly works, authors, institutions, sources and topics, including citation data, via REST. | API key | ◐ | 🆓 free: $1 of API usage/day without payment method; free key raises daily budget 10x | docs |
| PubMed E-utilities (NCBI) [Stack Overflow 199 questions] [GitHub 2985 stars openags/paper-search-mcp] [GitHub issues of openags/paper-search-mcp (mcp): 11 open, 32 fixed, median 138.7 days to fix, issue health 53/100] | Search, fetch, summarize and cross-link biomedical literature records from PubMed, PMC and other Entrez databases. | none | ◐ | 🆓 free; 3 req/s without key, 10 req/s with free NCBI API key | docs |
| Semantic Scholar API [GitHub 166 stars zongmin-yu/semantic-scholar-fastmcp-mcp-server] | Search papers, authors and citation graphs, and get paper recommendations from Semantic Scholar's academic corpus. | API key | ◐ | 🆓 free; no key (shared, throttled pool) or free API key on request | docs |
| SemanticHub | Lets an agent set up monitoring of news sources, read clustered articles and generated texts, and manage goals and workflows in SemanticHub. | API key / OAuth | ✅ | 🆓 free forever, no card: 1 goal, 100 sources to watch, 5 workflow nodes, articles kept 7 days; paid plans from $29/month | docs |
| Wikidata [Stack Overflow 931 questions] | Query the Wikidata knowledge graph of entities, facts and relations via SPARQL, the REST API or MCP. | none | ✅ | 🆓 free, no key | docs |
| Wikipedia / Wikimedia API [Stack Overflow 647 questions] [GitHub 305 stars Rudra-ravi/wikipedia-mcp] [GitHub issues of Rudra-ravi/wikipedia-mcp (mcp): 0 open, 30 fixed, median 27.8 days to fix, issue health 73/100] | Search, read and summarize Wikipedia and other Wikimedia content and metadata via REST and Action APIs. | none | ◐ | 🆓 free, no key (rate-limited) | docs |
| Wolfram|Alpha API [Stack Overflow 256 questions] | Get computed answers, structured data and step-by-step results for math, science and factual queries. | API key | ✅ | 🆓 Free: non-commercial developer AppID with up to 2,000 calls/month; paid for commercial use | docs |
Image generation and editing
Text-to-image, image editing, inpainting, upscaling and background removal. — 10 services. JSON: catalog/image-generation.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Adobe Firefly Services API [npm @adobe/firefly-apis 7381 downloads per month] [GitHub 1 stars Focus-GTS/firefly-services-mcp] | Generate and edit images and manage creative assets programmatically via Adobe's Firefly REST APIs. | OAuth 2.0 | ◐ | check pricing; requires Adobe Developer Console project and Firefly Services entitlement | docs |
| Black Forest Labs FLUX API | Generate, edit, and vary FLUX model images from text prompts via REST or the official OAuth MCP server. | API key | ✅ | paid only, no free tier (FLUX Schnell weights are open for self-hosting) | docs |
| Freepik API | Generate and edit images, and generate video, music and sound effects via REST API, plus access the Freepik stock asset library. | API key | ✅ | no free tier: pre-purchased credits spent per request (credit-based plans); the pay-per-usage plan ended June 30, 2026 | docs |
| Google Gemini / Imagen image API [App Store 4.73 from 2398189 ratings, Google Gemini] [npm @google/genai 93149557 downloads per month] [PyPI google-genai 137607856 downloads per month] [Stack Overflow 380 questions] [GitHub issues of googleapis/python-genai (sdk): 225 open, 500 fixed, median 10.8 days to fix, issue health 60/100] | Generate and multi-turn edit images from text via REST (Nano Banana/Imagen models), up to 4K with reference-image support. | API key | — | Paid only: pricing page lists Free Tier 'Not available' for all Gemini image models (Nano Banana family); usage-billed | docs |
| Ideogram API | Generate, edit, remix, upscale, and describe images via REST or an official OAuth MCP server, strong at in-image text. | API key | ✅ | Paid only: no free API credits (web app has 10 slow credits/week); API is pay-per-image from prepaid credit (min one-time purchase $1, min auto top-up target $10) | docs |
| Leonardo.Ai API ⭐⭐⭐⭐⭐ 5.0/5 · 1 review [npm @leonardo-ai/sdk 46881 downloads per month] [PyPI leonardo-ai-sdk 194 downloads per month] [GitHub issues of Leonardo-Interactive/leonardo-ts-sdk (sdk): 1 open, 23 fixed, median None days to fix, issue health 58/100] | Generate images and videos from text via REST or the official MCP server, with model selection and job status polling. | API key | ✅ | Paid only: Pay-As-You-Go API credit (USD balance) via manual or auto top-ups; API access is separate from free/web app plans | docs |
| OpenAI Images API (gpt-image) ⭐⭐⭐⭐⭐ 5.0/5 · 3 reviews [App Store 4.82 from 11901023 ratings, ChatGPT] [npm openai 165719618 downloads per month] [PyPI openai 295856631 downloads per month] [Stack Overflow 2538 questions] [GitHub 119 stars SureScaleAI/openai-gpt-image-mcp] [GitHub issues of openai/openai-python (sdk): 42 open, 835 fixed, median 336.3 days to fix, issue health 60/100] | Generate, edit, and iteratively refine images from text prompts via REST, with mask-based inpainting and streaming previews. | API key | ◐ | paid only; no free image credits, usage-based billing | docs |
| Recraft API | Generate, edit, upscale, and vectorize images via REST API using Recraft's proprietary models. | API key | ✅ | paid only; pay-per-image (from $0.007/image on V4.1 Flash), no confirmed free credits | docs |
| remove.bg API | Remove image backgrounds programmatically via a simple REST API with JSON or multipart uploads. | API key | — | 🆓 Free: first 50 API calls per month, then paid credits | docs |
| Stability AI Platform API [PyPI stability-sdk 7144 downloads per month] [GitHub 84 stars tadasant/mcp-server-stability-ai] [GitHub issues of tadasant/mcp-server-stability-ai (mcp): 8 open, 4 fixed, median None days to fix, issue health 33/100] | Generate, upscale, and edit images via REST (Stable Image Ultra/Core/SD3 models) using simple credit-based billing. | API key | ◐ | 25 free credits on signup, then pay-as-you-go | docs |
Video generation and editing
Text/image-to-video models, talking avatars, programmatic video rendering and video hosting. — 14 services. JSON: catalog/video-generation.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Akool API | Generate face-swap, talking avatar, and video-translation content programmatically via REST API. | API key | — | Paid only for API: API access starts at the Pro Max plan; the Free plan is web-app only with full-screen watermark | docs |
| Creatomate API [npm creatomate 38968 downloads per month] | Programmatically generate and render videos/images from templates via REST API. | API key | ✅ | Trial: full-featured trial with 50 credits one-time on signup, no credit card required; then Essential plan with 2,000 credits/mo | docs |
| D-ID API | Animate photos into talking-head videos with lip-sync from text or audio via REST API. | API key | ✅ | Trial: 14 days with 3 minutes of video credits, then paid plans only (API price per minute not published in machine-readable form) | docs |
| Google Veo (Gemini API / Vertex AI) [npm @google/genai 93149557 downloads per month] [PyPI google-genai 137607856 downloads per month] [GitHub 1225 stars GoogleCloudPlatform/genmedia-creative-studio] [GitHub issues of googleapis/python-genai (sdk): 225 open, 500 fixed, median 10.8 days to fix, issue health 60/100] | Generate video from text or image prompts via Gemini API (api key) or Vertex AI (cloud IAM), incl. Veo 3.1 scene extension. | API key / OAuth | ✅ | no free tier for video; Veo generation requires a paid Gemini API / Vertex AI billing account | docs |
| HeyGen API ⭐⭐ 2.0/5 · 1 review | Create AI avatar/talking-head videos from text or audio, manage avatars and voices, via REST API. | API key / OAuth | ✅ | no free API credits since Feb 2026; pay-as-you-go from $5, $0.50-$0.99/credit. Free plan (3 videos/mo) exists but is for the web app, not standalone API. | docs |
| Klap API | Automatically turn long videos into short clips with captions and reframing via REST API. | API key | — | Paid only; usage-based, billed monthly per operation (Generate Short $0.32, Video Input $0.44, Export $0.48); no free API credits stated | docs |
| Kling AI API [GitHub 46 stars 199-mcp/mcp-kling] | Generate text-to-video, image-to-video, lip-sync and video effects via REST API with a Bearer API key. | API key | ◐ | Paid only; prepaid credit packages from $0.14/unit, e.g. 5,000 units/$700, 180-day validity; a Trial Resource Package for integration testing is offered | docs |
| Luma AI Dream Machine API [npm lumaai 58757 downloads per month] [PyPI lumaai 39706 downloads per month] [GitHub 26 stars lumalabs/luma-api-mcp] | Generate and extend AI videos from text or start/end keyframe images via async REST API (Ray 3.2). | API key | ✅ | Paid only; pay per video, e.g. Ray 3.2 5s text/image-to-video $0.15 (540p) / $0.30 (720p) / $1.20 (1080p), $5,000/mo cap on default Build tier | docs |
| MiniMax Hailuo API [GitHub 1596 stars MiniMax-AI/MiniMax-MCP] [GitHub issues of MiniMax-AI/MiniMax-MCP (mcp): 21 open, 27 fixed, median 22.2 days to fix, issue health 43/100] | Async text-to-video, image-to-video and subject-reference video generation via REST API, up to 1080p. | API key | ✅ | new accounts get 50 signup credits (~1 short clip); 5s video costs ~45-70 credits, 1000 credits=$1 | docs |
| PixVerse API [GitHub 55 stars PixVerseAI/PixVerse-MCP] | Generate text-to-video, image-to-video, transition and fusion clips (360p-1080p) via REST API. | API key | ✅ | Paid only; prepaid credits from $10, $1 = 5 videos (v6, 720p, 5s, no audio) | docs |
| Runway API [npm @runwayml/sdk 240000 downloads per month] [PyPI runwayml 218204 downloads per month] [GitHub issues of runwayml/sdk-python (sdk): 22 open, 12 fixed, median 23.4 days to fix, issue health 30/100] | Generate and edit images/video (Gen-4.5) via async task-based REST API: submit, poll, download. | API key | ✅ | no free tier; $10 minimum credit top-up, $0.01/credit | docs |
| Shotstack API | Compose Edit JSON timelines to programmatically render, edit, and template videos, images and audio. | API key | ✅ | Trial: 10 free credits one-time (valid 30 days), then pay-as-you-go or subscription; stage sandbox (https://api.shotstack.io/edit/stage) for development, v1 production without watermarks | docs |
| Synthesia API ⭐⭐⭐⭐⭐ 5.0/5 · 1 review | Generate AI avatar talking-head videos from text scripts via REST API; supports custom avatars and voices. | API key | ✅ | Paid only; API access requires the Creator plan or above | docs |
| Tavus API [npm tavus 208 downloads per month] | Create AI video replicas and real-time conversational video agents (CVI) via REST API. | API key | ✅ | 🆓 Free tier: Free plan with 25 min of conversational video and 5 min of video generation per month, full API access, 25 stock replicas; Starter $59/mo | docs |
Speech and audio
Text-to-speech, speech-to-text, voice cloning, dubbing and audio intelligence. — 13 services. JSON: catalog/audio-speech.json
Music generation
Generate songs, instrumentals, loops and sound effects from prompts. — 6 services. JSON: catalog/music-generation.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Beatoven.ai API ⭐⭐⭐⭐ 3.8/5 · 4 reviews | Generate royalty-cleared background music and sound effects from text prompts via REST API (Maestro). | API key | — | check pricing | docs |
| ElevenLabs Music API ⭐⭐⭐⭐ 4.0/5 · 4 reviews [PyPI elevenlabs 9073441 downloads per month] [GitHub issues of elevenlabs/elevenlabs-python (sdk): 20 open, 351 fixed, median 9.3 days to fix, issue health 74/100] | Generate original music tracks from text prompts or detailed composition plans via REST API, with commercial licensing. | API key | ✅ | 🆓 Free tier: 10,000 credits per month shared with TTS (music included, no commercial use of music on Free; Starter $6/mo or higher needed) | docs |
| Loudly API ⭐ 1.0/5 · 1 review | Generate, remix, stem-split, and master music tracks programmatically via REST API. | API key | — | Trial: free track allowance on signup with the API key from the developer portal; then volume-based pricing (Startup/SME/Corporate) or pay-as-you-go | docs |
| Mubert API | Generate streaming or file-based background music from text/image prompts via REST/WebRTC API, 15s-25min tracks. | API key | — | paid only; plans start at $49/mo (100 generations/mo), no free tier | docs |
| Soundraw API ⭐ 1.0/5 · 1 review | Generate royalty-free background music tracks by mood, genre, and duration via REST API for embedding in apps. | API key | — | Trial: one-time 2-week free API trial with no commitment; then Starter $29.99/mo for 100 songs with a 6-month minimum commitment | docs |
| Stable Audio API (Stability AI) [PyPI stability-sdk 7144 downloads per month] [GitHub issues of Stability-AI/stability-sdk (sdk): 37 open, 77 fixed, median None days to fix, issue health 47/100] | Generate music and sound effects from text prompts via REST API (Stable Audio 2.5, or Stable Audio 3.0 for tracks up to 6 minutes). | API key | — | shares Stability AI platform credits; 25 free credits on signup, then pay-as-you-go | docs |
3D generation and assets
Text/image-to-3D mesh generation, texturing and 3D asset libraries. — 6 services. JSON: catalog/3d-generation.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Hyper3D Rodin API | Generate 3D meshes from text or images (sketch/regular/detail quality tiers) via an async REST job API. | API key | — | Paid only: API access requires the Business plan ($120/mo, $96/mo billed annually) or Enterprise; direct credits $1.5 each | docs |
| Meshy API [GitHub 90 stars meshy-dev/meshy-mcp-server] | Generate, retexture, rig, and animate 3D models from text or images via REST API or official MCP server. | API key | ✅ | Paid only: creating API keys requires a paid plan (Pro $20/mo+); Free accounts get only a built-in test key for the Playground (free web plan 100 credits/mo) | docs |
| Sketchfab Data API [GitHub 44 stars gregkop/sketchfab-mcp-server] | Search, download, and upload 3D models on Sketchfab programmatically via the REST Data API v3. | API key / OAuth | ◐ | 🆓 Free: no key needed for search and model listing (GET /v3/search, /v3/models); downloads (/v3/models/{uid}/download) need a free account token | docs |
| Stability AI 3D (Stable Fast 3D / SPAR3D) API | Convert a single 2D image into a textured 3D mesh (GLB) via the v2beta/3d REST endpoints. | API key | — | Trial: 25 free credits on signup (1 credit = $0.01), then pay-as-you-go | docs |
| Tencent Hunyuan3D API | Generate textured 3D meshes (GLB, PBR) from text, images, or sketches via Tencent Cloud's Hunyuan 3D API. | cloud IAM | — | Trial: 200 free credits one-time on first activation (valid 1 year); then postpaid $0.02/credit, Professional generation 25 credits (~$0.50), Express 15 | docs |
| Tripo API [PyPI tripo3d 10211 downloads per month] [GitHub 226 stars Tripo-Developer/tripo-mcp] [GitHub issues of Tripo-Developer/tripo-mcp (mcp): 9 open, 2 fixed, median None days to fix, issue health 27/100] | Generate textured 3D meshes from text or images via REST API, with an official MCP server for agents. | API key | ✅ | Trial: starter free credits (Tripo docs: 300 free credits; amount varies by signup path), then pay-as-you-go at $0.01/credit | docs |
Architecture, CAD and BIM
Building information models, CAD geometry, construction management and GIS platforms with programmatic access. — 8 services. JSON: catalog/architecture-cad-bim.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Autodesk Platform Services (APS) [npm @aps_sdk/model-derivative 29609 downloads per month] [Stack Overflow 4588 questions] [GitHub 4 stars autodesk-platform-services/aps-mcp-server-python] | Upload, translate, view and automate CAD/BIM files (Model Derivative, Data Management, Design Automation) via REST APIs. | OAuth 2.0 | ✅ | 🆓 Free tier: limited usage of rated APIs (Automation, Model Derivative, Flow Graph Engine, Reality Capture) per month, renews monthly; Pay as You Go beyond that needs a card or PayPal | docs |
| Bentley iTwin Platform APIs [npm @itwin/itwins-client 119400 downloads per month] [GitHub issues of iTwin/itwins-client (sdk): 0 open, 25 fixed, median 11.8 days to fix, issue health 82/100] | Create, manage and query digital twins, iModels and reality/reporting data for infrastructure projects via REST APIs. | OAuth 2.0 | — | 🆓 Free tier: Community plan with 100 credits/month, 10 GB cloud data, 100 GB reality data; non-commercial, non-production use only; no expiry | docs |
| Onshape REST API [App Store 3.53 from 418 ratings, Onshape 3D CAD] | Create, read and modify Onshape CAD documents, parts, assemblies and drawings programmatically via REST API. | API key / OAuth | ✅ | 🆓 free tier (public documents only); private documents need a paid plan | docs |
| Procore API ⭐⭐⭐⭐⭐ 5.0/5 · 2 reviews [App Store 4.65 from 46691 ratings, Procore] | Read and write construction project data - RFIs, submittals, drawings, budgets, schedules - via REST API. | OAuth 2.0 | ✅ | 🆓 free developer sandbox; production requires customer's paid Procore plan | docs |
| Rhino.Compute (McNeel) [npm compute-rhino3d 58236 downloads per month] [PyPI compute-rhino3d 6666 downloads per month] [Stack Overflow 88 questions] [GitHub issues of mcneel/compute.rhino3d (sdk): 80 open, 109 fixed, median 1050.3 days to fix, issue health 44/100] | Run Rhino/Grasshopper geometry operations headlessly via a stateless REST API you deploy yourself. | API key | — | Paid only: self-hosted, requires a Rhino license; core-hour billing at $0.10 per core per hour of Rhino uptime on Windows Server, no free allowance | docs |
| Speckle API [npm @speckle/objectloader2 56958 downloads per month] [PyPI specklepy 6537 downloads per month] [GitHub 14 stars bimgeek/speckle-mcp] [GitHub issues of specklesystems/speckle-server (sdk): 52 open, 566 fixed, median 902.2 days to fix, issue health 37/100] | Send, receive and query 3D/BIM model data across CAD tools (Revit, Rhino, Grasshopper, Tekla) via GraphQL API and SDKs. | API key / OAuth | ◐ | 🆓 free Explore plan (1 project, 3 users), unlimited API calls | docs |
| Trimble Connect API [App Store 3.38 from 29 ratings, Trimble-Connect] [npm trimble-connect-workspace-api 38520 downloads per month] | Manage Trimble Connect projects, files, BIM models, issues/topics and metadata via REST APIs (Core, Model, Organizer). | OAuth 2.0 | — | check pricing | docs |
| Zoo Text-to-CAD API (KittyCAD) [npm @kittycad/lib 34007 downloads per month] [PyPI kittycad 32382 downloads per month] [GitHub 11 stars KittyCAD/mcp] [GitHub issues of KittyCAD/mcp (mcp): 6 open, 28 fixed, median 0.7 days to fix, issue health 86/100] | Convert CAD files and run modeling operations via REST API; text-to-CAD generation runs through the WebSocket copilot and the MCP server. | API key | ✅ | start free trial credits, then usage-based pay-as-you-go | docs |
Diagrams and software architecture
Render or edit diagrams (Mermaid, PlantUML, C4), whiteboards and architecture models. — 8 services. JSON: catalog/diagrams-software-architecture.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Eraser API (DiagramGPT) | Generate diagrams from text prompts (DiagramGPT) and manage Eraser files programmatically via REST API. | API key | ✅ | paid only - API tokens require an active paid team plan | docs |
| IcePanel API ⭐⭐⭐⭐⭐ 5.0/5 · 1 review | Programmatically create, read, import, and export C4-style architecture landscapes and models via REST API. | API key | ✅ | 🆓 free tier: 10,000 read requests/mo, 1,000 write requests/mo, 5 import/export requests/mo | docs |
| Kroki | Render 25+ diagram-as-code formats (PlantUML, Mermaid, C4, GraphViz, BPMN, etc.) from text via a free HTTP GET/POST API. | none | — | 🆓 free, no key; public hosted instance at kroki.io sponsored by Exoscale (no SLA) | docs |
| Lucid (Lucidchart) REST API [App Store 4.59 from 5324 ratings, Lucidchart] [Stack Overflow 22 questions] | Create, read, search, and manage Lucidchart documents and folders programmatically via REST API. | API key / OAuth | ✅ | check pricing | docs |
| Mermaid Chart API [npm @mermaidchart/sdk 819 downloads per month] [Stack Overflow 363 questions] | Validate, render, and save Mermaid diagrams via Mermaid Chart's official MCP server using an account API token. | API key | ✅ | 🆓 unauthenticated MCP validate/render tools are free; saving to a Mermaid Chart account needs a token, check pricing for limits | docs |
| Miro REST API ⭐⭐⭐⭐⭐ 4.7/5 · 121 reviews [App Store 4.69 from 5863 ratings, Miro: your visual workspace] [npm @mirohq/miro-api 48711 downloads per month] [PyPI miro-api 691 downloads per month] [GitHub issues of miroapp/api-clients (sdk): 7 open, 8 fixed, median 492.4 days to fix, issue health 42/100] | Create/read boards and items via REST API, or use Miro's official MCP server to search, build, and summarize boards. | OAuth 2.0 | ✅ | 🆓 Free tier: up to 3 editable team boards; MCP on all plans, capped per day at 100 tool calls on Free (Starter 500, Business 2,000, Enterprise 10,000) | docs |
| Napkin AI API ⭐⭐⭐⭐⭐ 5.0/5 · 1 review | Generate diagrams, flowcharts, mind maps, and charts from text via REST API, exporting to SVG, PNG, or PPT. | API key | — | 🆓 included on every plan; any account can create a token and call the API, limited by credits | docs |
| PlantUML Server API [Stack Overflow 470 questions] | Render UML and architecture-as-code diagrams to PNG/SVG/ASCII via a free public HTTP GET API using encoded diagram text. | none | — | 🆓 free, no key; public hosted server at plantuml.com/plantuml | docs |
Design and UI
Read and write design files, generate branded graphics and publish websites. — 6 services. JSON: catalog/design-ui.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Canva Connect API [App Store 4.87 from 3602941 ratings, Canva AI Photo & Video Editor] | Programmatically create, autofill, and export Canva designs, and manage assets and comments via a REST API. | OAuth 2.0 | ✅ | check pricing (free to build/test; public apps require Canva review before production use) | docs |
| Figma REST API / Dev Mode MCP ⭐⭐⭐⭐⭐ 4.7/5 · 15 reviews [App Store 4.62 from 21064 ratings, Figma] [npm @figma/rest-api-spec 2081863 downloads per month] [Stack Overflow 354 questions] [GitHub 221 stars figma/rest-api-spec] [GitHub issues of figma/rest-api-spec (spec): 17 open, 18 fixed, median 8.9 days to fix, issue health 45/100] | Read and write Figma file/comment/component data via REST, and feed live design context to coding agents via the official Dev Mode MCP server. | API key / OAuth | ✅ | 🆓 free: personal access tokens work on free plan, rate-limited per seat/plan tier; MCP free during beta | docs |
| Framer ⭐⭐⭐⭐ 4.0/5 · 1 review [npm framer-api 945110 downloads per month] | Automate publishing of Framer sites programmatically (get project info, publish previews, promote to production) via a Node SDK. | API key | — | 🆓 Free: Server API is free while in beta; Framer plans per-use pricing with a monthly free allowance later | docs |
| Penpot API ⭐⭐⭐⭐⭐ 5.0/5 · 1 review | Read, create, and modify Penpot design files, comments, and webhooks via a token-authenticated RPC/REST API, or via the official MCP server. | API key | ✅ | 🆓 free tier: free cloud account (design.penpot.app) plus free, open-source self-hosting | docs |
| v0 Platform API (Vercel) [npm v0-sdk 206061 downloads per month] [GitHub issues of vercel/v0-sdk (sdk): 0 open, 41 fixed, median 172.2 days to fix, issue health 63/100] | Generate full UI/frontend code from natural-language prompts, iterate via chat, and deploy the result directly to Vercel via REST API. | API key | ✅ | 🆓 Free tier: v0 Free plan includes $5 of credits per month (7 messages/day); Platform API use on Free not confirmed, credits also included on Premium/Team plans | docs |
| Webflow Data API ⭐⭐⭐ 3.3/5 · 3 reviews [npm webflow-api 246341 downloads per month] [PyPI webflow 635856 downloads per month] [Stack Overflow 243 questions] [GitHub issues of webflow/js-webflow-api (sdk): 19 open, 75 fixed, median 82.9 days to fix, issue health 58/100] | Create/update CMS collections, items, and pages, and publish Webflow sites programmatically via REST API or the official MCP server. | API key / OAuth | ✅ | check pricing (API access itself is free with a token; some CMS/publish actions require the site to be on a paid Webflow plan) | docs |
Documents, OCR and presentations
Parse PDFs and scans, convert file formats, generate slides and collect e-signatures. — 14 services. JSON: catalog/presentations-documents.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Adobe PDF Services API [npm @adobe/pdfservices-node-sdk 180019 downloads per month] [PyPI pdfservices-sdk 242423 downloads per month] | Programmatically create, convert, combine, compress, OCR, and extract data from PDF documents. | OAuth 2.0 | — | 🆓 free tier: 500 document transactions/month, no credit card required | docs |
| AWS Textract [npm @aws-sdk/client-textract 6339915 downloads per month] [Stack Overflow 236 questions] [GitHub issues of aws/aws-sdk-js-v3 (sdk): 105 open, 2816 fixed, median 15.4 days to fix, issue health 76/100] | Detect and extract text, forms, tables, and data from scanned documents and images via API calls. | cloud IAM | ✅ | Trial: new AWS customers get 3 months free, per month 1,000 pages DetectDocumentText, 100 pages AnalyzeDocument forms/tables/layout/queries, 100 AnalyzeExpense/AnalyzeID, 2,000 pages AnalyzeLending; card required | docs |
| Azure AI Document Intelligence [npm @azure-rest/ai-document-intelligence 1098577 downloads per month] [PyPI azure-ai-documentintelligence 11022329 downloads per month] [Stack Overflow 301 questions] [GitHub issues of Azure/azure-sdk-for-python (sdk): 751 open, 10553 fixed, median 14.0 days to fix, issue health 77/100] | Analyze forms, invoices, receipts, and scanned documents to extract structured JSON via REST API. | cloud IAM | — | 🆓 Free tier: F0 pricing tier, 500 pages/month; analyzes only the first 2 pages per document, 4 MB max file, 1 TPS | docs |
| CloudConvert API ⭐⭐⭐⭐⭐ 5.0/5 · 1 review [npm cloudconvert 340223 downloads per month] [PyPI cloudconvert 478385 downloads per month] [Stack Overflow 40 questions] [GitHub issues of cloudconvert/cloudconvert-node (sdk): 7 open, 85 fixed, median 0.3 days to fix, issue health 96/100] | Convert, compress, merge, watermark, and OCR files across 200+ formats via REST API or MCP. | API key / OAuth | ✅ | 🆓 Free: 10 conversion credits/day including all API features, no credit card required; paid credit packages beyond that; free Sandbox API for unlimited test jobs without consuming credits | docs |
| DocuSign eSignature API ⭐⭐⭐⭐ 4.3/5 · 43 reviews [App Store 4.87 from 832149 ratings, Docusign - Upload & Sign Docs] [npm docusign-esign 1326778 downloads per month] [PyPI docusign-esign 1634525 downloads per month] [Stack Overflow 6269 questions] [GitHub 24 stars docusign/OpenAPI-Specifications] [GitHub issues of docusign/docusign-esign-node-client (sdk): 30 open, 147 fixed, median None days to fix, issue health 53/100] | Send, sign, track, and manage electronic signature envelopes and agreement workflows via REST API. | OAuth 2.0 | ✅ | 🆓 free developer/demo sandbox account (account-d.docusign.com) with unlimited test envelopes; production use requires a paid DocuSign plan | docs |
| Gamma API [App Store 4.76 from 1119 ratings, Gamma: AI Slides & Design] | Generate, poll, and export AI-made presentations, documents, or social posts as PDF/PPTX via REST API. | API key / OAuth | ✅ | Paid only for API keys (Pro, Ultra, Teams or Business plan); the Gamma MCP server/connectors work on all plans including Free, with generations consuming credits | docs |
| Google Document AI [npm @google-cloud/documentai 1934011 downloads per month] [PyPI google-cloud-documentai 3153802 downloads per month] [GitHub issues of googleapis/google-cloud-python (sdk): 461 open, 4389 fixed, median 22.5 days to fix, issue health 72/100] | Extract text, tables, and structured data from documents like invoices, forms, and IDs via REST API. | cloud IAM | — | 🆓 Free tier: first 1,000 pages/month free for Enterprise Document OCR only (then $1.50/1,000); Form Parser and custom extractor $30/1,000 pages with no free band | docs |
| Google Slides / Docs API [Stack Overflow 459 questions] | Read and programmatically edit Google Slides presentations (slides, shapes, text, tables) via REST API or MCP. | OAuth 2.0 | ✅ | 🆓 free, no key (standard Google API usage quotas apply; requires GCP project + OAuth consent) | docs |
| LlamaParse (LlamaCloud) [npm llama-cloud-services 386306 downloads per month] [PyPI llama-cloud-services 2344929 downloads per month] [Stack Overflow 3 questions] [GitHub issues of run-llama/llama_cloud_services (sdk): 349 open, 267 fixed, median 0.3 days to fix, issue health 76/100] | Parse, classify, extract, and split complex documents (tables, forms, charts) into LLM-ready structured data via API. | API key | ✅ | 🆓 Free tier: Free plan with 10K credits/month; beyond that credit-based at $1.25/1,000 credits (1-45+ credits/page depending on tier); 48h parse cache is free to re-query | docs |
| Mistral OCR API [npm @mistralai/mistralai 24130590 downloads per month] [PyPI mistralai 16185864 downloads per month] [Stack Overflow 12 questions] [GitHub 0 stars D-Diaa/mistral-ocr-mcp] [GitHub issues of mistralai/client-python (sdk): 39 open, 132 fixed, median 63.2 days to fix, issue health 40/100] | Extract text, tables, and layout structure from PDFs and images as structured Markdown/JSON via REST API. | API key | ◐ | 🆓 Free tier: Free plan includes $10/month in API credits; then $4/1,000 pages (OCR), $5/1,000 pages (Document AI); 50% off via Batch API | docs |
| PDF.co API [GitHub 9 stars pdfdotco/pdfco-mcp] | Convert, merge, split, edit, fill forms, OCR, and extract data from PDFs via REST API. | API key | ✅ | trial credits: 10,000 credits for 1 month, no credit card required | docs |
| Reducto API [npm reductoai 1223990 downloads per month] [PyPI reductoai 4298505 downloads per month] | Parse, extract, split, edit, and classify complex documents into structured JSON/Markdown via REST API or SDKs. | API key | ✅ | Trial: $150 in free credits (15,000 credits) one-time for new Standard accounts; then standard rates; Startup Program gives extra credits to qualifying teams | docs |
| SlideSpeak API ⭐ 1.0/5 · 1 review [GitHub 14 stars SlideSpeak/slidespeak-mcp] | Generate, edit, and download PowerPoint/PDF presentations from text, documents, or outlines via REST API. | API key | ✅ | Trial: free API trial, no credit card required; then API plans from $49/month (1,000 credits) | docs |
| Unstructured API [npm unstructured-client 197441 downloads per month] [PyPI unstructured-client 3231764 downloads per month] [GitHub issues of Unstructured-IO/unstructured-python-client (sdk): 17 open, 28 fixed, median None days to fix, issue health 25/100] | Partition and extract structured elements (text, tables, layout) from PDFs, docs, and images for RAG pipelines via API. | API key | ✅ | Trial: 10,000 free pages one-time on signup, no credit card; then pay-as-you-go at $0.015/page | docs |
Translation and language
Machine translation, grammar and style checking. — 6 services. JSON: catalog/translation-language.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Amazon Translate ⭐⭐⭐⭐⭐ 5.0/5 · 1 review [npm @aws-sdk/client-translate 2003794 downloads per month] [Stack Overflow 16 questions] [GitHub 9875 stars awslabs/mcp] [GitHub issues of aws/aws-sdk-js-v3 (sdk): 105 open, 2816 fixed, median 15.4 days to fix, issue health 76/100] | Translate text and documents in real time or batch across 75+ languages via the AWS SDK/API. | cloud IAM | ✅ | 🆓 free tier: 2M characters/month for 12 months (new AWS accounts) | docs |
| Azure AI Translator [npm @azure-rest/ai-translation-text 352976 downloads per month] [PyPI azure-ai-translation-text 166524 downloads per month] [GitHub issues of Azure/azure-sdk-for-python (sdk): 751 open, 10553 fixed, median 14.0 days to fix, issue health 77/100] | Translate text, detect language, and transliterate across 100+ languages via REST API within Azure AI Services. | API key | ◐ | 🆓 free tier (F0): 2,000,000 characters/month | docs |
| DeepL API ⭐⭐⭐⭐ 4.0/5 · 1 review [App Store 4.77 from 13286 ratings, DeepL Translate] [npm deepl-node 1146895 downloads per month] [PyPI deepl 1229932 downloads per month] [Stack Overflow 84 questions] [GitHub 120 stars DeepL/deepl-mcp-server] [GitHub issues of DeepL/deepl-python (sdk): 50 open, 88 fixed, median None days to fix, issue health 46/100] | Translate and rephrase text or documents between 30+ languages via REST API, SDKs, or an official MCP server. | API key | ✅ | 🆓 Free: API Developer plan ('Test out the API for free', EUR 0 base price, 1,000,000 characters/month in the pricing data); legacy API Free keys (:fx) use api-free.deepl.com | docs |
| Google Cloud Translation [npm @google-cloud/translate 2039128 downloads per month] [PyPI google-cloud-translate 9817700 downloads per month] [Stack Overflow 56 questions] [GitHub issues of googleapis/google-cloud-python (sdk): 461 open, 4389 fixed, median 22.5 days to fix, issue health 72/100] | Translate text/documents and detect language across 100+ languages via REST/gRPC API within Google Cloud. | cloud IAM | ◐ | 🆓 free tier: 500,000 characters/month (permanent, not a trial) | docs |
| LanguageTool API ⭐⭐⭐⭐⭐ 5.0/5 · 1 review [Stack Overflow 84 questions] | Check grammar, style, and spelling in 30+ languages via a public HTTP API, with an optional Premium key for higher limits. | API key | ◐ | 🆓 Free: no key needed on public endpoint (rate-limited: 20 req/min, 75KB text/min per IP, 20KB per request) | docs |
| Lara Translate API ⭐⭐⭐⭐⭐ 5.0/5 · 1 review [npm @translated/lara 59426 downloads per month] [PyPI lara-sdk 6346 downloads per month] | Translate text, documents, images and audio with context, style, glossaries and translation memories, and detect the language of text. | API key | ✅ | 🆓 Free: 10,000 API characters/month (shared by translation and language detection), no credit card required | docs |
Code execution sandboxes
Isolated cloud environments where an agent can run code, shells and whole dev environments safely. — 11 services. JSON: catalog/code-execution-sandbox.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| agent-exec | Lets an agent run sandboxed Python or Node code, store objects, watch URLs, get signed attestations, and rent disposable email/DNS, paying per call in USDC over x402 with no account or API key. | none | ✅ | 🆓 free: one real sandboxed /execute/free run per wallet per day, plus the directory, discovery files and offline x402 verification are free; further sandboxed code execution, storage and other utilities are pay-per-call via x402 | docs |
| Cloudflare Sandbox SDK ⭐⭐⭐⭐⭐ 4.8/5 · 12 reviews [npm @cloudflare/sandbox 3125669 downloads per month] [GitHub issues of cloudflare/sandbox-sdk (sdk): 3 open, 190 fixed, median 21.8 days to fix, issue health 75/100] | Deploy a Cloudflare Worker embedding this SDK to run untrusted code in per-request container sandboxes. | API key | ✅ | requires Workers Paid plan ($5/mo) for Containers; no free tier for container-backed sandboxes | docs |
| CodeSandbox SDK [npm @codesandbox/sdk 302023 downloads per month] [Stack Overflow 270 questions] [GitHub issues of codesandbox/codesandbox-sdk (sdk): 9 open, 48 fixed, median 61.1 days to fix, issue health 61/100] | Programmatically create, resume, and control cloud VM sandboxes to run and preview AI-written code. | API key | — | 🆓 Free: Build (free) plan with 400 VM credits/month (~40 Nano-VM hours) and up to 10 concurrent VMs | docs |
| Daytona [npm @daytonaio/sdk 2734867 downloads per month] [PyPI daytona 8365992 downloads per month] [GitHub issues of daytona/clients (sdk): 13 open, 22 fixed, median 1.3 days to fix, issue health 72/100] | Create elastic remote sandboxes via SDK/API to run AI-generated code with sub-second startup. | API key | ✅ | Trial: $200 free compute credit one-time on signup, no credit card required; first 5 GiB storage free; startup program up to $50k credits | docs |
| E2B [npm e2b 8440786 downloads per month] [PyPI e2b 5857504 downloads per month] [GitHub 393 stars e2b-dev/mcp-server] [GitHub issues of e2b-dev/E2B (sdk): 41 open, 297 fixed, median 23.5 days to fix, issue health 65/100] | Spin up isolated Firecracker cloud sandboxes via SDK/REST to execute AI-generated code and return results. | API key | ✅ | Trial: one-time $100 usage credit on signup (Hobby, no card); up to 1 h per sandbox, 20 concurrent; then pay-as-you-go | docs |
| Judge0 | Submit source code and stdin via REST to compile/run it in 60+ languages and poll for the result. | API key | — | Paid only on Judge0 Cloud (Pro EUR 27/mo for 2,000 submissions/day and up); self-host free & open-source (GPLv3) | docs |
| Modal [npm modal 3648861 downloads per month] [PyPI modal 47839937 downloads per month] [GitHub 1 stars milkymap/mcp4modal_sandbox] [GitHub issues of modal-labs/modal-client (sdk): 28 open, 127 fixed, median 2.7 days to fix, issue health 74/100] | Programmatically launch serverless sandboxes, optionally with GPUs, to execute untrusted or agent code. | API key | ◐ | 🆓 Starter plan: $0 base + $30/mo free credits | docs |
| Piston [GitHub 2840 stars engineer-man/piston] [GitHub issues of engineer-man/piston (repo): 123 open, 239 fixed, median 2.1 days to fix, issue health 61/100] | Compile and run code in 70+ languages inside isolated containers via a self-hostable REST API (the public instance needs a granted token). | API key | — | 🆓 Free: self-host (open source, Docker); public emkc.org API closed to open use since 2026-02-15, tokens only for approved non-commercial educational projects | docs |
| Riza [npm @riza-io/api 17131 downloads per month] [PyPI rizaio 891 downloads per month] | Call a REST API to execute untrusted Python/JS/Ruby/PHP code in sandboxes that start in under 10ms. | API key | ✅ | 🆓 Free tier: Hobby plan free forever, 100,000 requests/month, 30 s execution limit; then usage-based pricing | docs |
| Runloop [npm @runloop/api-client 131257 downloads per month] [PyPI runloop_api_client 473200 downloads per month] [GitHub 34 stars runloopai/api-client-ts] | Create, snapshot, suspend/resume, and run commands in Linux Devboxes via API/SDK for agent coding tasks. | API key | ✅ | $50 free credits on signup, then usage-based ($0.108/CPU-hr, $0.0252/GB-hr) | docs |
| Vercel Sandbox ⭐⭐⭐⭐⭐ 4.5/5 · 2 reviews [npm @vercel/sandbox 22796006 downloads per month] [GitHub issues of vercel/sandbox (sdk): 12 open, 10 fixed, median 7.0 days to fix, issue health 51/100] | Boot ephemeral Firecracker microVMs via SDK/REST to run agent- or AI-generated code and shell commands. | API key / OAuth | ✅ | 🆓 usage included on Hobby plan, otherwise usage-based on Pro/Enterprise | docs |
Developer platforms and DevOps
Source control, CI/CD, monitoring, error tracking, incident management and package registries. — 13 services. JSON: catalog/developer-devops.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| agent-qa [GitHub 923 stars vostride/agent-qa] | Run plain-language tests for web, Android and iOS through MCP, with persistent memory and validated self-improvement. | none | ✅ | 🆓 Free local package; configured model access is required and model-provider charges may apply. | docs |
| CircleCI API ⭐⭐⭐ 3.0/5 · 2 reviews | An agent can trigger pipelines, rerun workflows, fetch logs/test results, and validate CI/CD configuration via REST. | API key | ✅ | 🆓 free plan: 30,000 credits/month (~6,000 build minutes on a small Docker resource class), credits expire monthly | docs |
| Datadog API ⭐⭐⭐⭐⭐ 4.9/5 · 7 reviews [npm @datadog/datadog-api-client 11361824 downloads per month] [PyPI datadog-api-client 18438013 downloads per month] [Stack Overflow 1104 questions] [GitHub issues of DataDog/datadog-api-client-python (sdk): 26 open, 61 fixed, median 100.5 days to fix, issue health 53/100] | An agent can query metrics, logs, traces, monitors, and dashboards, and manage Datadog configuration via REST. | API key | ✅ | 🆓 free Infrastructure Monitoring plan: 1-day metric retention, up to 5 hosts; other products (APM, Logs, Security) are paid | docs |
| Docker Hub API ⭐⭐⭐⭐⭐ 4.7/5 · 3 reviews [GitHub 171 stars docker/hub-mcp] | An agent can search, push, pull, tag, and manage container images and repositories on Docker Hub. | API key | ✅ | 🆓 free personal accounts with rate-limited image pulls; paid Pro/Team/Business tiers raise pull limits | docs |
| GitHub API ⭐⭐⭐⭐⭐ 4.7/5 · 21 reviews [npm octokit 15890275 downloads per month] [npm @octokit/rest 76059597 downloads per month] [Stack Overflow 3762 questions] [GitHub issues of octokit/octokit.js (sdk): 40 open, 936 fixed, median 0.1 days to fix, issue health 98/100] | An agent can manage repositories, issues, pull requests, releases, and code search via REST or GraphQL. | API key / OAuth | ✅ | 🆓 free with any GitHub account; 5,000 req/hr authenticated, 60/hr unauthenticated | docs |
| GitLab API ⭐⭐⭐⭐ 4.4/5 · 14 reviews [Stack Overflow 18300 questions] | An agent can manage projects, issues, merge requests, CI/CD pipelines, and repository files via REST/GraphQL. | API key / OAuth | ✅ | 🆓 free tier: full REST API access on GitLab.com Free plan; some features gated to Premium/Ultimate | docs |
| Globalping Network Measurement API [npm globalping 38294 downloads per month] | Lets an agent run ping, traceroute, MTR, DNS and HTTP tests from thousands of probes worldwide to check reachability, latency and routing of a host. | none | ✅ | 🆓 No key; 250 tests/hour anonymously (up to 50 probes per measurement), 500 tests/hour with a free account token (up to 500 probes); extra tests use credits. | docs |
| Maven Central Search API [GitHub 35 stars arvindand/maven-tools-mcp] | Lets an agent search Maven Central for Java/JVM artifacts by groupId, artifactId, class name or SHA-1 and look up the latest versions before adding a dependency. | none | ◐ | 🆓 No key; free public API with no published quota (fair use). | docs |
| PagerDuty API ⭐⭐⭐⭐⭐ 4.7/5 · 44 reviews [npm @pagerduty/pdjs 612457 downloads per month] [PyPI pagerduty 2201298 downloads per month] [Stack Overflow 63 questions] [GitHub 34 stars PagerDuty/api-schema] [GitHub issues of PagerDuty/api-schema (spec): 28 open, 5 fixed, median None days to fix, issue health 6/100] | An agent can create/manage incidents, on-call schedules, escalation policies, and services via REST. | API key / OAuth | ✅ | 🆓 free plan for up to 5 users: 100 monthly SMS/phone notifications, 1 on-call schedule, 1 escalation policy, API access | docs |
| Postman API ⭐⭐⭐⭐⭐ 4.8/5 · 24 reviews | An agent can manage Postman collections, workspaces, environments, mocks, monitors, and API specs via REST. | API key | ✅ | 🆓 Free plan: 10,000 Postman API calls/month; rate limits ~300 req/min general, stricter for specific endpoints | docs |
| Reflag Management API [npm @reflag/node-sdk 99126 downloads per month] | Lets an agent create feature flags, change their targeting for users and companies, and evaluate flags at runtime. | API key / OAuth | ✅ | 🆓 Free Starter plan: 1,000 monthly tracked users, unlimited seats, 3 environments; no overage (upgrade required) | docs |
| Sentry API [npm @sentry/node 157604023 downloads per month] [PyPI sentry-sdk 127673427 downloads per month] [Stack Overflow 1549 questions] [GitHub issues of getsentry/sentry-javascript (sdk): 384 open, 7972 fixed, median 8.2 days to fix, issue health 83/100] | An agent can query and triage error/performance issues and manage projects, releases, and org data. | API key / OAuth | ✅ | 🆓 free Developer plan: 1 user, 5,000 errors/mo, 5GB logs, 50 replays; includes MCP access | docs |
| Supabase Management API | An agent can programmatically create and manage Supabase projects, databases, API keys, and config. | API key / OAuth | ✅ | 🆓 free plan available; rate limit 120 req/min per user/project (lower for heavier endpoints) | docs |
Cloud and hosting
Cloud providers, serverless and edge platforms, and site hosting an agent can deploy to and manage. — 11 services. JSON: catalog/cloud-hosting.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| AWS APIs [npm @aws-sdk/client-s3 199812604 downloads per month] [Stack Overflow 158597 questions] [GitHub issues of aws/aws-sdk-js-v3 (sdk): 105 open, 2816 fixed, median 15.4 days to fix, issue health 76/100] | An agent can provision and control thousands of AWS resources (compute, storage, databases, ML) via SDKs/CLI/REST. | cloud IAM | ✅ | 🆓 Free tier: 30+ services always free within monthly limits; new accounts also get up to $200 one-time credits ($100 on signup + up to $100 earned) usable over 6 months | docs |
| Azure APIs [GitHub 3112 stars Azure/azure-rest-api-specs] [GitHub 3830 stars microsoft/mcp] [GitHub issues of Azure/azure-rest-api-specs (spec): 1782 open, 3142 fixed, median 2044.0 days to fix, issue health 46/100] | An agent can deploy and manage Azure resources (compute, storage, databases, AI) across resource-provider REST APIs. | cloud IAM | ✅ | 🆓 12 months of select free services plus $200 credit for 30 days for new accounts; many services also have a permanent always-free monthly amount | docs |
| Cloudflare API ⭐⭐⭐⭐⭐ 4.8/5 · 12 reviews [npm cloudflare 12655383 downloads per month] [PyPI cloudflare 2012441 downloads per month] [Stack Overflow 3312 questions] [GitHub issues of cloudflare/cloudflare-typescript (sdk): 17 open, 47 fixed, median 115.5 days to fix, issue health 39/100] | An agent can manage DNS, Workers, zones, WAF/security rules, and caching for Cloudflare accounts programmatically. | API key / OAuth | ✅ | 🆓 free with any Cloudflare account; API access itself is free, manages both free and paid Cloudflare products | docs |
| Easypanel | Lets an agent discover Easypanel server-management procedures and execute queries, mutations and destructive operations using the selected user’s permissions. | API key | ✅ | 🆓 free tier: 3 projects with unlimited services and deployments; self-hosted server costs are separate | docs |
| Fly.io Machines API | An agent can create, start, stop, and destroy Fly.io Machines (lightweight VMs) programmatically via REST. | API key | ✅ | Trial: 2 machine-hours or 7 days, whichever comes first, no card needed to start (adding a card ends the trial); then pay-as-you-go, no perpetual free tier | docs |
| Google Cloud APIs | An agent can create and manage Google Cloud resources (compute, storage, data, AI/ML) via REST, gRPC, or client libraries. | cloud IAM | ✅ | 🆓 free trial credit for new customers plus an Always Free tier with perpetual no-cost limits on select products | docs |
| Mux Video API [npm @mux/mux-node 1861229 downloads per month] [PyPI mux_python 1037312 downloads per month] [GitHub issues of muxinc/mux-ts (sdk): 0 open, 100 fixed, median 512.1 days to fix, issue health 61/100] | Upload, encode, stream and analyse video; get playback URLs, thumbnails and captions via REST. | API key | ✅ | 🆓 first 100,000 delivered minutes/month free, then usage-based | docs |
| Netlify API ⭐⭐⭐⭐ 4.0/5 · 5 reviews | An agent can create/manage sites, trigger and monitor deploys, and configure DNS, domains, and env vars. | API key / OAuth | ✅ | 🆓 Free: $0 forever plan with 300 credits per month (hard limit, no rollover); API usage subject to account plan limits | docs |
| Render API | An agent can create and manage Render services, trigger deployments, and configure databases and env vars. | API key | ✅ | 🆓 free static sites; free web services that spin down after inactivity | docs |
| Tencent EdgeOne Pages (Makers) | Lets an agent deploy HTML pages, static sites and full-stack apps with edge functions to EdgeOne and get back a public URL. | API key | ✅ | 🆓 Free plan (stated as permanent): 40 projects, 500 builds/month, 3M Edge Function and 1M Cloud Function invocations/month, 5 GB storage, 1 GB KV, 1 GB Blob. | docs |
| Vercel API ⭐⭐⭐⭐⭐ 4.5/5 · 2 reviews [npm @vercel/sdk 2106605 downloads per month] [GitHub issues of vercel/sdk (sdk): 22 open, 16 fixed, median 32.0 days to fix, issue health 29/100] | An agent can create deployments, manage projects/domains/env vars, and query analytics and logs. | API key / OAuth | ✅ | 🆓 free on Hobby plan; some resources/endpoints require Pro/paid plan | docs |
Databases
Managed SQL, NoSQL, key-value and analytics databases an agent can create, query and manage. — 12 services. JSON: catalog/databases.json
Vector search, memory and RAG
Vector databases, retrieval (RAG) services and long-term memory layers for agents. — 9 services. JSON: catalog/databases-vector-memory.json
Email, team chat and notifications
Send and receive email, post to team chat (Slack, Discord), send push notifications; manage meetings. — 10 services. JSON: catalog/communication-email-chat.json
SMS and messaging apps
Send and receive SMS and messages on WhatsApp, LINE or Telegram through a messaging provider's API. — 12 services. JSON: catalog/sms-messaging.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| AWS End User Messaging SMS [npm @aws-sdk/client-pinpoint-sms-voice-v2 1564855 downloads per month] [GitHub issues of aws/aws-sdk-js-v3 (sdk): 105 open, 2816 fixed, median 15.4 days to fix, issue health 76/100] | Send SMS, MMS and voice messages and manage sender numbers, opt-outs and registrations via the AWS SMS and Voice v2 API. | cloud IAM | ✅ | Paid only; US SMS $0.00774/message + $0.00421 carrier fee (10DLC or toll-free) | docs |
| Bird (formerly MessageBird) [npm messagebird 138763 downloads per month] [PyPI messagebird 188964 downloads per month] [GitHub issues of messagebird/messagebird-nodejs (sdk): 22 open, 26 fixed, median None days to fix, issue health 42/100] | Send SMS, email and WhatsApp messages, verify phone numbers and track delivery via REST API or hosted MCP. | API key / OAuth | ✅ | Paid only; prepaid wallet, US long code or toll-free $0.0035/SMS + carrier fees | docs |
| Infobip | Send SMS (and WhatsApp, Viber, RCS, email and voice messages) and fetch delivery reports via the Infobip REST API. | API key | ✅ | Trial: 60 days, 15 free SMS, no card; SMS only to up to 5 verified numbers, from the shared test sender (ServiceSMS); then pay as you go | docs |
| LINE Messaging API [App Store 3.19 from 18575 ratings, LINE] [npm @line/bot-sdk 2450171 downloads per month] [PyPI line-bot-sdk 11357375 downloads per month] [Stack Overflow 31 questions] [GitHub 797 stars line/line-bot-mcp-server] [GitHub issues of line/line-bot-sdk-python (sdk): 5 open, 244 fixed, median 31.3 days to fix, issue health 58/100] | Lets an agent send and reply to messages, rich messages and broadcasts to users of a LINE Official Account and read user profiles. | API key | ✅ | 🆓 Free Communication plan (Japan): 200 push/broadcast messages/month; reply messages are unlimited. Beyond that only paid plans (Light JPY 5,000 for 5,000 messages, Standard JPY 15,000 for 30,000). Free quotas vary by region | docs |
| Sinch ⭐ 1.0/5 · 2 reviews [npm @sinch/sdk-core 76685 downloads per month] [PyPI sinch 39907 downloads per month] [Stack Overflow 560 questions] [GitHub 1 stars sinch/sinch-mcp-server] | Send and receive SMS (and WhatsApp, RCS and other channels) via the Conversation REST API. | API key | ✅ | Trial: free trial credit and a free test number on signup, no card; then paid (US 10DLC $0.0078/SMS + carrier fees) | docs |
| SMSAPI | Send SMS (and MMS and voice messages) to Polish and international numbers via the SMSAPI REST API, with delivery reports by callback. | API key | ✅ | Trial: 50 free SMS on registration; until the account is activated by SMSAPI staff it can only send to the phone number used at registration; then prepaid from 0.17 PLN net/SMS (minimum top-up 49 PLN) | docs |
| Telegram Bot API ⭐⭐⭐⭐⭐ 4.7/5 · 19 reviews [App Store 4.0 from 285209 ratings, Telegram Messenger] [Stack Overflow 5034 questions] [GitHub 1983 stars chigwell/telegram-mcp] [GitHub issues of chigwell/telegram-mcp (mcp): 10 open, 69 fixed, median 1.7 days to fix, issue health 91/100] | Send/receive messages, media, and inline interactions via a simple HTTPS bot API. | API key | ◐ | 🆓 free, no key needed beyond a bot token from @BotFather | docs |
| Telnyx ⭐⭐⭐⭐⭐ 5.0/5 · 8 reviews [npm telnyx 1786580 downloads per month] [PyPI telnyx 682274 downloads per month] [GitHub issues of team-telnyx/telnyx-node (sdk): 0 open, 56 fixed, median 155.7 days to fix, issue health 63/100] | Send and receive SMS, MMS, RCS and WhatsApp messages and manage phone numbers via REST API. | API key | ✅ | Trial: $5 test credit, 1 verified number, 100 messages/day; then paid (US 10DLC $0.004/SMS part + carrier fees) | docs |
| Textbelt | Send an SMS to a phone number (US or international) with one HTTP POST, and check delivery status and remaining credits. | API key | — | 🆓 Free: shared key 'textbelt' sends 1 SMS per day; paid credits are a one-time purchase | docs |
| Twilio ⭐⭐⭐⭐⭐ 4.8/5 · 13 reviews [npm twilio 26290125 downloads per month] [PyPI twilio 19597269 downloads per month] [Stack Overflow 10513 questions] [GitHub 114 stars twilio-labs/mcp] [GitHub issues of twilio/twilio-node (sdk): 29 open, 515 fixed, median 38.9 days to fix, issue health 60/100] | Send/receive SMS, WhatsApp messages, and voice calls programmatically via REST API. | API key | ✅ | Trial: 100 SMS, 100 WhatsApp, 3,000 emails, 75 voice minutes; no card; one-time, expires after 30 days; SMS only to verified numbers within the signup country, using predefined templates | docs |
| Vonage API [npm @vonage/server-sdk 581166 downloads per month] [PyPI vonage 264731 downloads per month] [Stack Overflow 322 questions] [GitHub 3 stars Vonage-Community/vonage-mcp-server-api-bindings] [GitHub issues of Vonage/vonage-node-sdk (sdk): 7 open, 382 fixed, median 2.0 days to fix, issue health 74/100] | Send SMS, make voice calls, and build video apps via a unified communications REST API. | API key | ✅ | Trial: free credit on signup, no credit card required; then pay-as-you-go per request | docs |
| WhatsApp Business Cloud API ⭐⭐⭐⭐ 4.1/5 · 22 reviews [Stack Overflow 233 questions] [GitHub 0 stars networkerman/whatsapp-cloud-api-mcp-server] | Send/receive WhatsApp messages, template messages, and media programmatically via Graph API. | OAuth 2.0 | ◐ | 🆓 Free: non-template (service) messages inside an open 24h customer service window; template messages billed per message (per-message pricing since 2025-07-01) | docs |
Voice agents and telephony
Place and receive phone calls handled by AI voice agents, real-time audio/video rooms. — 9 services. JSON: catalog/voice-agents-telephony.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Bland AI | Programmatically create AI phone agents and place/manage automated outbound and inbound calls. | API key | ✅ | 🆓 free credits + inbound number on signup (Start plan), no credit card required | docs |
| Deepgram Voice Agent API [npm @deepgram/sdk 3852874 downloads per month] [PyPI deepgram-sdk 3166523 downloads per month] [Stack Overflow 6 questions] [GitHub issues of deepgram/deepgram-python-sdk (sdk): 15 open, 283 fixed, median 96.6 days to fix, issue health 63/100] | Run a full-duplex speech-to-speech voice agent pipeline (STT+LLM+TTS) over a WebSocket API. | API key | ✅ | $200 free credit on signup | docs |
| ElevenLabs Agents Platform ⭐⭐⭐⭐ 4.0/5 · 4 reviews [npm @elevenlabs/elevenlabs-js 4004983 downloads per month] [PyPI elevenlabs 9073441 downloads per month] [Stack Overflow 22 questions] [GitHub issues of elevenlabs/elevenlabs-python (sdk): 20 open, 351 fixed, median 9.3 days to fix, issue health 74/100] | Build and deploy conversational AI voice agents with telephony (SIP/Twilio) integration via API and SDKs. | API key | ✅ | 🆓 Free plan: 10k credits/month shared across ElevenLabs products; no commercial license (from Starter, $6/month) | docs |
| LiveKit Cloud [npm livekit-server-sdk 11150669 downloads per month] [PyPI livekit-api 6123157 downloads per month] [PyPI livekit 5645409 downloads per month] [Stack Overflow 40 questions] [GitHub issues of livekit/python-sdks (sdk): 19 open, 92 fixed, median 16.1 days to fix, issue health 65/100] | Build and deploy real-time voice AI agents with SIP telephony support using LiveKit's server SDKs and APIs. | API key | — | 🆓 free Build plan: 1,000 agent session minutes/mo, 5,000 WebRTC participant minutes/mo, 50GB data transfer | docs |
| Plivo ⭐⭐⭐⭐⭐ 5.0/5 · 1 review [npm plivo 186710 downloads per month] [PyPI plivo 266471 downloads per month] [Stack Overflow 170 questions] [GitHub 0 stars plivo/mcp] [GitHub issues of plivo/plivo-node (sdk): 9 open, 78 fixed, median None days to fix, issue health 56/100] | Make and receive voice calls, SIP trunking and AI voice agents via REST API; SMS is available only on the Enterprise plan. | API key | ✅ | Trial: free credits for the first 3 weeks on the self-serve Professional plan (voice and SIP only); SMS, MMS and WhatsApp need Enterprise (from $1,000/month) | docs |
| Retell AI ⭐ 1.0/5 · 1 review [npm retell-sdk 928150 downloads per month] [PyPI retell-sdk 616442 downloads per month] [GitHub issues of RetellAI/retell-typescript-sdk (sdk): 0 open, 15 fixed, median 163.8 days to fix, issue health 63/100] | Build, deploy, and manage AI voice agents that handle phone and web calls via REST API and SDKs. | API key | ✅ | $10 free credit on signup, then pay-as-you-go ($0.07-$0.31/min for voice) | docs |
| Synthflow API ⭐ 1.0/5 · 1 review | Create and manage AI phone voice agents and trigger/manage outbound calls programmatically via REST API. | API key | ✅ | Paid only: Enterprise contracts from $30,000/year; no free plan or self-serve trial listed | docs |
| Twilio Programmable Voice ⭐⭐⭐⭐⭐ 4.8/5 · 13 reviews [npm twilio 26290125 downloads per month] [PyPI twilio 19597269 downloads per month] [Stack Overflow 10513 questions] [GitHub 176 stars twilio/twilio-oai] [GitHub 114 stars twilio-labs/mcp] [GitHub issues of twilio/twilio-oai (spec): 28 open, 27 fixed, median 0.0 days to fix, issue health 60/100] | Programmatically make, receive, and control phone calls (IVR, recording, conferencing) via REST API. | API key | ✅ | Trial: one-time free units (e.g. 75 voice minutes, 100 SMS, 100 WhatsApp, 3,000 emails), no card, expires after 30 days; then pay-as-you-go | docs |
| Vapi [npm @vapi-ai/server-sdk 582437 downloads per month] [PyPI vapi_server_sdk 171652 downloads per month] [GitHub issues of VapiAI/server-sdk-typescript (sdk): 15 open, 11 fixed, median None days to fix, issue health 37/100] | Create, configure, and run AI voice assistants that make and receive phone calls via REST API. | API key | ✅ | $5 free credit on signup, then pay-as-you-go (~$0.05/min platform fee + provider costs) | docs |
Productivity and workspace
Email, calendars, files, notes, tasks and project management. — 17 services. JSON: catalog/productivity-workspace.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Airtable API ⭐⭐⭐⭐⭐ 4.7/5 · 28 reviews [App Store 4.8 from 25087 ratings, Airtable] [npm airtable 1840061 downloads per month] [Stack Overflow 263 questions] [GitHub issues of Airtable/airtable.js (sdk): 117 open, 83 fixed, median None days to fix, issue health 17/100] | Read and write records in Airtable bases and tables via REST API. | API key / OAuth | ✅ | 🆓 Free tier: 1,000 API calls per workspace per month on the Free plan, 5 req/sec per base | docs |
| Asana API ⭐⭐⭐⭐⭐ 4.7/5 · 97 reviews [App Store 4.66 from 15672 ratings, Asana: Work Management] [npm asana 965506 downloads per month] [PyPI asana 2932186 downloads per month] [Stack Overflow 189 questions] [GitHub issues of Asana/node-asana (sdk): 51 open, 70 fixed, median None days to fix, issue health 43/100] | Create tasks, projects, and comments in Asana workspaces via REST API. | API key / OAuth | ✅ | 🆓 free tier: API included on Personal (free) plan, rate limited | docs |
| Atlassian (Jira, Confluence) | Create and manage Jira issues and Confluence pages via REST API or the official remote MCP server. | OAuth 2.0 | ✅ | 🆓 free tier: available on Free Jira/Confluence plans; rate limits vary by plan | docs |
| Box API [App Store 4.76 from 190655 ratings, Box: The power of Content + AI] [npm box-node-sdk 699606 downloads per month] [PyPI boxsdk 2803009 downloads per month] [PyPI box-sdk-gen 993149 downloads per month] [Stack Overflow 1087 questions] [GitHub issues of box/box-python-sdk (sdk): 27 open, 328 fixed, median 9.7 days to fix, issue health 81/100] | Upload, download, and manage files, folders, and metadata in Box via REST API. | OAuth 2.0 | ✅ | 🆓 Free: developer plan with 10 GB storage, full API access and 1,000 AI units per month, no payment required | docs |
| Cal.com API [App Store 4.86 from 230 ratings, Cal.com] | Create and manage bookings, event types, and availability via the Cal.com REST API v2. | API key / OAuth | ✅ | 🆓 Free: API keys on any account incl. the free-forever Individuals plan, 120 req/min per key (higher on request); Teams/Orgs endpoints need paid plans | docs |
| Calendly API ⭐⭐⭐⭐⭐ 4.7/5 · 14 reviews | Programmatically book meetings and read/write scheduling, event, and contact data via REST API v2. | API key / OAuth | ✅ | 🆓 Free: API reads and most writes work on every plan incl. Free (except 3 Enterprise-only endpoints); booking through the Scheduling API (POST /invitees) and webhooks need a paid plan | docs |
| ClickUp API ⭐⭐⭐⭐⭐ 4.6/5 · 122 reviews [Stack Overflow 21 questions] | Create and manage ClickUp tasks, lists, and docs via REST API or the official MCP server. | API key / OAuth | ✅ | 🆓 free tier: API access included on Free Forever plan | docs |
| Coda API (Superhuman Docs) ⭐⭐⭐⭐⭐ 5.0/5 · 1 review | Read and write Coda (now 'Superhuman Docs') documents, tables, and rows via REST API or an MCP server. | API key | ✅ | 🆓 free, included for all users on both free and paid workspaces | docs |
| Dropbox API ⭐⭐⭐⭐⭐ 4.5/5 · 226 reviews [App Store 4.8 from 929134 ratings, Dropbox: Cloud Storage Backup] [npm dropbox 921669 downloads per month] [PyPI dropbox 1542245 downloads per month] [Stack Overflow 2370 questions] [GitHub issues of dropbox/dropbox-sdk-js (sdk): 26 open, 271 fixed, median 1420.8 days to fix, issue health 57/100] | Upload, download, and manage files and folders in Dropbox via the HTTP REST API. | OAuth 2.0 | ✅ | 🆓 free tier: API access included on Basic (free) plan, rate limited | docs |
| Google Workspace APIs (Gmail, Calendar, Drive) [Stack Overflow 19831 questions] | Read/write Gmail messages, Calendar events, and Drive files programmatically via REST APIs. | OAuth 2.0 | ✅ | 🆓 Free: no charge within per-API daily quotas; Google plans to bill quota overages to the Cloud billing account later in 2026 | docs |
| Linear API ⭐⭐⭐⭐⭐ 5.0/5 · 1 review [npm @linear/sdk 11841442 downloads per month] [GitHub issues of linear/linear (sdk): 12 open, 211 fixed, median 4.0 days to fix, issue health 89/100] | Create, query, and update Linear issues, projects, and comments via GraphQL API or the official MCP server. | API key / OAuth | ✅ | 🆓 free tier: API access included on Free plan (rate limited) | docs |
| Microsoft Graph (Outlook, Teams, OneDrive) [npm @microsoft/microsoft-graph-client 9198299 downloads per month] [PyPI msgraph-sdk 5816938 downloads per month] [Stack Overflow 14366 questions] [GitHub issues of microsoftgraph/msgraph-sdk-javascript (sdk): 79 open, 372 fixed, median 790.5 days to fix, issue health 40/100] | Single REST endpoint to read/write Outlook mail, Calendar events, Teams, and OneDrive/SharePoint data. | OAuth 2.0 | ✅ | 🆓 Free: standard Graph APIs cost nothing beyond the user's Microsoft 365/Entra license (metered APIs are billed); the free M365 E5 developer sandbox is only for qualifying members (Visual Studio Pro/Enterprise subscribers, ISV Success/partners, Premier/Unified support) | docs |
| monday.com API ⭐⭐⭐⭐⭐ 4.8/5 · 98 reviews [npm monday-sdk-js 429527 downloads per month] [Stack Overflow 45 questions] [GitHub issues of mondaycom/monday-sdk-js (sdk): 11 open, 39 fixed, median None days to fix, issue health 31/100] | Query and update monday.com boards, items, and workflows via GraphQL API or a hosted MCP endpoint. | API key / OAuth | ✅ | 🆓 free tier: GraphQL API included on Free plan (rate limited) | docs |
| NocoDB Cloud API [npm nocodb-sdk 14303 downloads per month] [GitHub issues of nocodb/nocodb (sdk): 366 open, 4333 fixed, median 61.0 days to fix, issue health 64/100] | Lets an agent read, create and update records, tables and views in NocoDB spreadsheet-style databases. | API key / OAuth | ✅ | 🆓 Free plan: 1,000 records, 1 GB storage, 1,000 API calls/month, 3 editors, 100 automation runs; no credit card | docs |
| Notion API ⭐⭐⭐⭐⭐ 4.7/5 · 26 reviews [App Store 4.77 from 90605 ratings, Notion: Notes, Tasks, AI] [npm @notionhq/client 7379324 downloads per month] [Stack Overflow 298 questions] [GitHub issues of makenotion/notion-sdk-js (sdk): 54 open, 236 fixed, median 165.9 days to fix, issue health 56/100] | Read, create, and update Notion pages, databases, and comments via REST API. | API key / OAuth | ✅ | 🆓 free, API access included on all plans (rate limit ~3 req/sec) | docs |
| Todoist API ⭐⭐⭐⭐⭐ 4.8/5 · 14 reviews [App Store 4.8 from 130459 ratings, Todoist: To Do List & Calendar] [npm @doist/todoist-api-typescript 105040 downloads per month] [PyPI todoist-api-python 150862 downloads per month] [Stack Overflow 39 questions] [GitHub issues of Doist/todoist-api-python (sdk): 8 open, 43 fixed, median 82.1 days to fix, issue health 40/100] | Create, read, and complete Todoist tasks and projects via REST API or the official MCP server. | API key / OAuth | ✅ | 🆓 Free: API usable with any Todoist account; 1,000 partial / 100 full sync requests per 15 min per user; some features follow the user's Todoist plan | docs |
| Trello API [App Store 4.34 from 7033 ratings, Trello: Daily Task Tracker] [Stack Overflow 571 questions] | Create and manage Trello boards, lists, and cards via REST API. | API key / OAuth | ✅ | 🆓 Free: free API key + user token; rate limits 300 req/10 s per API key and 100 req/10 s per token | docs |
CRM, support and marketing
Contacts, deals, support tickets and email campaigns. — 8 services. JSON: catalog/crm-support-marketing.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Attio API ⭐⭐⭐⭐⭐ 5.0/5 · 1 review [App Store 3.47 from 30 ratings, Attio] | Search, create, and update records, lists, and notes in an Attio CRM workspace via REST API or official MCP. | API key / OAuth | ✅ | 🆓 Free tier: up to 3 seats, 50,000 records, API access included; no card required; 14-day trial of Pro plan | docs |
| HubSpot API [App Store 4.74 from 15860 ratings, HubSpot] [npm @hubspot/api-client 6223139 downloads per month] [PyPI hubspot-api-client 3544086 downloads per month] [Stack Overflow 449 questions] [GitHub issues of HubSpot/hubspot-api-nodejs (sdk): 53 open, 209 fixed, median 162.1 days to fix, issue health 35/100] | Create/update CRM contacts, deals, companies, and engagements, or send marketing emails, via REST API or remote MCP. | API key / OAuth | ✅ | 🆓 free CRM account with limited-scope API access; many endpoints require a paid Hub tier (see APIs-by-tier docs) | docs |
| Intercom API ⭐⭐⭐⭐⭐ 4.7/5 · 9 reviews [App Store 2.13 from 173 ratings, Intercom Conversations] [npm intercom-client 1686551 downloads per month] [PyPI python-intercom 248819 downloads per month] [Stack Overflow 177 questions] [GitHub issues of intercom/intercom-node (sdk): 17 open, 180 fixed, median 62.5 days to fix, issue health 44/100] | Manage conversations, contacts, companies, and Help Center articles via REST API or Intercom's official remote MCP server. | API key / OAuth | ✅ | 🆓 free development workspace for building/testing; production use requires a paid Intercom plan | docs |
| Klaviyo API ⭐⭐⭐⭐⭐ 4.5/5 · 8 reviews [npm klaviyo-api 488083 downloads per month] [PyPI klaviyo-api 253129 downloads per month] [Stack Overflow 15 questions] [GitHub issues of klaviyo/klaviyo-api-node (sdk): 14 open, 43 fixed, median 25.3 days to fix, issue health 44/100] | Manage email/SMS marketing profiles, lists, flows, and campaign analytics via Klaviyo's REST API or official MCP server. | API key / OAuth | ✅ | 🆓 free plan up to 250 contacts / 500 email sends per month | docs |
| Mailchimp Marketing API ⭐⭐⭐⭐⭐ 4.5/5 · 130 reviews [App Store 4.85 from 51737 ratings, Mailchimp Email Marketing] [npm @mailchimp/mailchimp_marketing 858602 downloads per month] [PyPI mailchimp-marketing 516454 downloads per month] [Stack Overflow 576 questions] [GitHub 25 stars damientilman/mailchimp-mcp-server] [GitHub issues of damientilman/mailchimp-mcp-server (mcp): 0 open, 27 fixed, median 10.7 days to fix, issue health 83/100] | Manage email marketing audiences, campaigns, and automation via Mailchimp's Marketing REST API. | API key / OAuth | ◐ | 🆓 free plan up to 250 contacts / 500 emails per month (API accessible on free plan) | docs |
| Pipedrive API ⭐⭐⭐⭐ 4.4/5 · 50 reviews [App Store 3.75 from 677 ratings, Pipedrive – Sales CRM] [npm pipedrive 224606 downloads per month] [Stack Overflow 61 questions] [GitHub issues of pipedrive/client-nodejs (sdk): 1 open, 172 fixed, median 65.9 days to fix, issue health 67/100] | Create and update deals, contacts (persons/organizations), and activities in a Pipedrive CRM pipeline via REST API. | API key / OAuth | ✅ | no free tier; 14/30-day trial and free developer sandbox account for testing | docs |
| Salesforce APIs ⭐⭐⭐⭐⭐ 4.7/5 · 60 reviews [App Store 4.75 from 356082 ratings, Salesforce] [Stack Overflow 10302 questions] | Read and write Salesforce CRM records (leads, opportunities, cases) programmatically via REST, GraphQL, or Bulk API. | OAuth 2.0 | ✅ | 🆓 free Developer Edition org available via signup at developer.salesforce.com/signup | docs |
| Zendesk API ⭐⭐⭐⭐ 4.3/5 · 20 reviews [App Store 4.52 from 4229 ratings, Zendesk Support] [Stack Overflow 185 questions] [GitHub 125 stars reminia/zendesk-mcp-server] | Create, update, and search support tickets, users, and Help Center articles via Zendesk's REST API. | API key / OAuth | ◐ | Trial: 14-day free trial of Suite Professional, one-time, no credit card required; no free plan, paid plans from $19/agent/mo (Support Team, annual) | docs |
Social media
Read and publish posts, comments and videos on social platforms. — 10 services. JSON: catalog/social-media.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Ayrshare ⭐⭐⭐ 3.4/5 · 5 reviews [npm social-post-api 343 downloads per month] [PyPI social-post-api 6591 downloads per month] | Unified API to post, schedule, and analyze content across 14+ social networks (X, Instagram, LinkedIn, TikTok, etc.) with one API key. | API key | ✅ | Trial: one-time 28-day free trial of the Launch plan ($299/mo), no card required; Premium from $149/mo | docs |
| Bluesky / AT Protocol [App Store 3.87 from 13816 ratings, Bluesky Social] [npm @atproto/api 836199 downloads per month] [GitHub issues of bluesky-social/atproto (sdk): 545 open, 472 fixed, median 12.2 days to fix, issue health 49/100] | Post, read, and moderate content on Bluesky via the open, self-hostable AT Protocol REST/XRPC API. | OAuth 2.0 | — | 🆓 free, no key needed for public reads; free account required for posting | docs |
| LinkedIn API [App Store 4.77 from 645411 ratings, LinkedIn: Community & Network] [Stack Overflow 5223 questions] | Sign users in and share basic posts via OAuth2/OpenID Connect; most other endpoints require partner approval. | OAuth 2.0 | — | check pricing — most scopes require LinkedIn Partner Program approval | docs |
| Mastodon API ⭐⭐⭐ 2.5/5 · 11 reviews [App Store 4.55 from 13482 ratings, Mastodon] [Stack Overflow 67 questions] | Post statuses, read timelines, and manage accounts on any Mastodon instance via REST API. | OAuth 2.0 | — | 🆓 Free: register an app per instance at no cost; default limit 300 requests per 5 minutes per account | docs |
| Meta Graph API (Facebook, Instagram) ⭐⭐⭐⭐ 4.1/5 · 22 reviews [App Store 4.53 from 29038262 ratings, Facebook] [Stack Overflow 34973 questions] | Read and publish posts, manage Pages, and access Instagram business content via Meta's Graph API. | OAuth 2.0 | ✅ | 🆓 Free: no fee; platform rate limit 200 calls/hour x app users; most non-trivial permissions need Meta App Review and business verification | docs |
| Pinterest API ⭐⭐⭐⭐⭐ 4.7/5 · 14 reviews [App Store 4.78 from 5813619 ratings, Pinterest] [Stack Overflow 862 questions] | Create pins and boards and read analytics data on Pinterest via REST API v5. | OAuth 2.0 | — | 🆓 Free: new apps get Trial access (1,000 requests/day); Standard access (100 req/s per user per app) requires app review | docs |
| Reddit API ⭐⭐⭐⭐ 4.2/5 · 8 reviews [App Store 4.75 from 3514643 ratings, Reddit] [Stack Overflow 1240 questions] | Read posts/comments and submit posts, comments, or votes on Reddit via OAuth2 REST API. | OAuth 2.0 | — | 🆓 Free: Data API usable within Reddit's rate limits under the Data API Terms; commercial use or research above rate limits needs a separate agreement with Reddit | docs |
| TikTok API ⭐⭐⭐⭐⭐ 4.7/5 · 7 reviews [App Store 4.72 from 18422424 ratings, TikTok - Videos, Shop & LIVE] | Post videos/drafts and query content on TikTok via the Content Posting and Display OAuth2 REST APIs. | OAuth 2.0 | — | 🆓 Free: no fee; default 600 requests/min per endpoint; app review needed for production, unaudited clients post private-only | docs |
| X (Twitter) API [npm twitter-api-sdk 244853 downloads per month] [PyPI xdk 197657 downloads per month] [GitHub issues of xdevplatform/twitter-api-typescript-sdk (sdk): 48 open, 20 fixed, median None days to fix, issue health 32/100] | Post, search, and read tweets and manage X (Twitter) content via REST API v2. | API key / OAuth | ✅ | Paid only: pay-per-usage with prepaid credits (e.g. $0.005 per Post read, $0.001 per owned read), no subscriptions and no free tier | docs |
| YouTube Data API [App Store 4.66 from 49722087 ratings, YouTube] [Stack Overflow 11538 questions] | Search videos, manage playlists/comments, and upload videos to YouTube via REST API. | API key / OAuth | — | 🆓 Free tier: 10,000 quota units/day plus separate caps of 100 search.list and 100 videos.insert calls/day (extendable on request) | docs |
Maps, geolocation and weather
Geocoding, routing, places, map tiles and weather forecasts. — 18 services. JSON: catalog/maps-geo-weather.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Esri ArcGIS Location Platform [PyPI arcgis 138222 downloads per month] [Stack Overflow 2749 questions] | Geocode addresses, render maps, run spatial analysis and manage geospatial site data via REST APIs and SDKs. | API key / OAuth | ✅ | 🆓 free tier with monthly free credits, then usage-based pricing | docs |
| Geoapify [npm @geoapify/geocoder-autocomplete 36781 downloads per month] [GitHub issues of geoapify/geocoder-autocomplete (sdk): 9 open, 5 fixed, median None days to fix, issue health 34/100] | Geocode, search places, and calculate routes/isochrones via REST APIs built on open geodata. | API key | ✅ | 🆓 free tier: 3,000 credits/day (~90,000/month), no card required | docs |
| Google Maps Platform ⭐⭐⭐⭐⭐ 4.7/5 · 6 reviews [App Store 4.67 from 7438909 ratings, Google Maps] [npm @googlemaps/google-maps-services-js 3810989 downloads per month] [PyPI googlemaps 3144295 downloads per month] [Stack Overflow 24982 questions] [GitHub issues of googlemaps/google-maps-services-js (sdk): 41 open, 344 fixed, median None days to fix, issue health 36/100] | Geocode addresses, get directions/routes, places data, and static/dynamic maps via REST APIs or Google's remote MCP server. | API key | ✅ | 🆓 Free tier: free calls per SKU per month (10K Essentials, 5K Pro, 1K Enterprise), replacing the former $200 monthly credit | docs |
| GUGiK Universal Geocoding Service (UUG) | Geocode a Polish street address to coordinates (PUWG 1992 / EPSG:2180 by default, WGS84 with srid=4326) with official TERYT/SIMC/ULIC codes and postcode, or reverse-geocode a point to the nearest address, via Poland's national geodesy office. | none | — | 🆓 Free, no key: public government geocoding service for Polish addresses, streets, towns, road markers and level crossings | docs |
| HERE Location Services [App Store 3.67 from 1579 ratings, HERE WeGo Maps & Navigation] [PyPI here-location-services 1315 downloads per month] [Stack Overflow 3313 questions] | Geocode, route, and search places worldwide via REST APIs and SDKs. | API key | ◐ | 🆓 Free: Base plan includes free monthly transactions per service (pay-as-you-grow above); credit card required at signup | docs |
| IP2Location.io API [npm ip2location-io-nodejs 16969 downloads per month] [PyPI IP2Location-io 74 downloads per month] | Lets an agent geolocate IPv4/IPv6 addresses, get ASN/ISP/proxy data, and look up domain WHOIS records. | API key | ✅ | 🆓 Free plan: 50,000 IP geolocation queries/month, 500 domain WHOIS and 50 hosted-domain queries/month (attribution required); keyless: 1,000 queries/day. | docs |
| IPLocate IP Intelligence API [npm node-iplocate 43172 downloads per month] [GitHub 20 stars iplocate/mcp-server-iplocate] | Lets an agent geolocate an IP address and get its ASN, ISP, company, abuse contacts and VPN/proxy/Tor/hosting flags. | API key | ✅ | 🆓 Free plan: 1,000 requests/day forever, all data types (geolocation, VPN/proxy/Tor, ASN, company, abuse contacts), no credit card. | docs |
| LocationIQ | Geocode and reverse-geocode addresses, find nearby places, look up time zones, calculate routes and render map tiles via REST API. | API key | — | 🆓 Free: 5,000 requests/day, 2 requests/s, 60 requests/min, no card; commercial use requires a link back to LocationIQ | docs |
| Mapbox [npm mapbox-gl 16758504 downloads per month] [npm @mapbox/mapbox-sdk 1384020 downloads per month] [PyPI mapbox 150163 downloads per month] [Stack Overflow 6491 questions] [GitHub issues of mapbox/mapbox-gl-js (sdk): 1413 open, 6534 fixed, median 85.8 days to fix, issue health 57/100] | Geocode, route, and render maps/POI search via REST APIs, SDKs, or an official MCP server. | API key | ✅ | 🆓 free tier: monthly free quotas per API (e.g. 50,000 map loads/month) | docs |
| National Weather Service API (NWS) | Fetch official US government weather forecasts, alerts, and observations via a free public REST API. | none | ◐ | 🆓 free, no key, no rate-limit tier (fair-use) | docs |
| Open-Meteo [npm openmeteo 141079 downloads per month] [PyPI openmeteo-requests 243825 downloads per month] [GitHub issues of open-meteo/python-requests (sdk): 0 open, 18 fixed, median 1.6 days to fix, issue health 96/100] | Fetch weather forecasts, historical weather, and climate data worldwide via a free open REST API, no key required. | none | ◐ | 🆓 No key needed for non-commercial use: 10,000 calls/day, 300,000/month (also 600/min, 5,000/hour) | docs |
| OpenCage Geocoding API [PyPI opencage 562337 downloads per month] [GitHub 19 stars OpenCageData/opencage-geocoding-mcp] [GitHub issues of OpenCageData/python-opencage-geocoder (sdk): 1 open, 16 fixed, median 0.0 days to fix, issue health 98/100] | Convert addresses and place names to coordinates, and coordinates to addresses, worldwide via REST API. | API key | ✅ | 🆓 Free: 2,500 requests/day, 1 request/s, no card (for testing; production needs a paid plan from €45/month) | docs |
| OpenRouteService [npm openrouteservice-js 4709 downloads per month] [PyPI openrouteservice 47494 downloads per month] [GitHub issues of GIScience/openrouteservice-py (sdk): 12 open, 42 fixed, median None days to fix, issue health 31/100] | Calculate routes, isochrones, distance matrices, and geocoding over OpenStreetMap data via a free REST API. | API key | ◐ | 🆓 free tier: ~2,000 requests/day (varies by endpoint), signup required | docs |
| OpenStreetMap Nominatim [Stack Overflow 261 questions] | Geocode and reverse-geocode addresses from OpenStreetMap data via a free public REST API. | none | ◐ | 🆓 No key needed; public server max 1 request/second, bulk geocoding discouraged (small one-off jobs only, cached), no systematic or autocomplete queries | docs |
| OpenWeatherMap API [Stack Overflow 837 questions] | Fetch current weather, forecasts, and historical/air-quality data for any location via a REST API. | API key | ✅ | 🆓 Free tier: 60 calls/min, 1,000,000 calls/month on current weather/forecast | docs |
| Overpass API (OSM) [Stack Overflow 376 questions] | Run custom queries (Overpass QL) over OpenStreetMap data - POIs, roads, boundaries - via a public read-only API. | none | ◐ | 🆓 free, no key; public instances are fair-use/rate-limited | docs |
| Photon (komoot) [GitHub 3169 stars komoot/photon] [GitHub issues of komoot/photon (repo): 42 open, 467 fixed, median 12.4 days to fix, issue health 78/100] | Geocode addresses and place names worldwide from OpenStreetMap data with typo-tolerant search-as-you-type, or reverse-geocode coordinates to the nearest address. | none | — | 🆓 Free, no key: public demo instance under fair use; heavy usage is throttled or banned | docs |
| Tomorrow.io API [App Store 4.63 from 27798 ratings, Tomorrow.io: Weather Forecast] | Get hyperlocal weather forecasts, historical data, and alerts for any coordinates via REST API or an official MCP server. | API key | ✅ | 🆓 free tier: 500 requests/day, 3 req/sec, 1 monitored location/alert | docs |
Finance, payments and market data
Accept payments, move money, access bank data and query stock, FX and crypto prices. — 16 services. JSON: catalog/finance-payments.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Adyen API ⭐⭐⭐⭐ 4.0/5 · 1 review [npm @adyen/api-library 981355 downloads per month] [PyPI Adyen 732351 downloads per month] [Stack Overflow 167 questions] [GitHub 79 stars Adyen/adyen-openapi] [GitHub 27 stars Adyen/adyen-mcp] [GitHub issues of Adyen/adyen-node-api-library (sdk): 9 open, 147 fixed, median 9.9 days to fix, issue health 81/100] | Process payments, payouts, and manage disputes/balances across global payment methods via REST API. | API key | ✅ | paid only; requires a signed merchant contract, pay per-transaction | docs |
| Alpaca Trading API ⭐ 1.0/5 · 3 reviews [npm @alpacahq/alpaca-trade-api 53732 downloads per month] [PyPI alpaca-py 1066689 downloads per month] [GitHub 1057 stars alpacahq/alpaca-mcp-server] [GitHub issues of alpacahq/alpaca-py (sdk): 53 open, 238 fixed, median 290.6 days to fix, issue health 55/100] | Place stock/options/crypto trades and stream market data via REST/WebSocket API, with free paper trading. | API key | ✅ | 🆓 free paper trading (unlimited); free basic (IEX) market data feed | docs |
| Alpha Vantage [Stack Overflow 232 questions] | Fetch stock, forex, crypto prices and technical/fundamental indicators via a free REST API. | API key | ✅ | 🆓 free tier: 25 requests/day | docs |
| Coinbase (CDP / x402) ⭐⭐⭐⭐ 4.4/5 · 10 reviews [App Store 4.68 from 1798030 ratings, Coinbase: Buy Crypto & Stocks] [npm @coinbase/cdp-sdk 4253047 downloads per month] [PyPI cdp-sdk 107008 downloads per month] [GitHub 58 stars coinbase/payments-mcp] [GitHub issues of coinbase/cdp-sdk (sdk): 23 open, 67 fixed, median 6.4 days to fix, issue health 72/100] | Create wallets, send crypto, and pay per-API-call with stablecoins over HTTP (x402) via the Coinbase Developer Platform SDK. | API key | ✅ | 🆓 Free tier: CDP x402 Facilitator free for 1,000 onchain transactions/month, then $0.001/tx; payment verification always free | docs |
| CoinGecko API ⭐⭐⭐⭐⭐ 5.0/5 · 1 review [App Store 4.81 from 27220 ratings, CoinGecko: Crypto Tracker] [npm @coingecko/coingecko-typescript 80180 downloads per month] [PyPI coingecko-sdk 14015 downloads per month] [GitHub issues of coingecko/coingecko-typescript (sdk): 3 open, 10 fixed, median 67.8 days to fix, issue health 38/100] | Fetch live and historical crypto prices, market data, and NFT data via REST API or the official CoinGecko MCP server. | API key | ✅ | 🆓 Free tier: Demo API plan 10,000 calls/month, 100 calls/min, attribution required; keyless free MCP with shared rate limits | docs |
| CoinMarketCap API ⭐⭐⭐ 2.7/5 · 16 reviews [App Store 4.81 from 173145 ratings, CoinMarketCap: Crypto Tracker] | Lets an agent fetch live and historical cryptocurrency prices, market caps, listings, exchange and DEX data, and indices like Fear & Greed. | API key | ✅ | 🆓 Free Basic plan: 15,000 credits/month, 50 requests/min, 1 API key, commercial use allowed; plus a keyless public API with lower rate limits | docs |
| DexPaprika DEX API [npm dexpaprika-sdk 403 downloads per month] [PyPI dexpaprika-sdk 678 downloads per month] | Lets an agent query on-chain DEX data across 36 blockchains: liquidity pools, swaps, token prices, OHLCV history and live price streams. | none | ✅ | 🆓 No key; 30,000 credits per rolling 30 days per IP at 15 requests/min. Free registered key: 100,000 credits/30 days at 30 requests/min, no card | docs |
| Financial Modeling Prep ⭐⭐⭐⭐ 3.6/5 · 13 reviews | Fetch company financials, stock prices, and fundamental data via a REST API. | API key | ✅ | 🆓 free tier: 250 requests/day (limited endpoints) | docs |
| Mercado Pago API [App Store 4.82 from 76905 ratings, Mercado Pago: cuenta digital] [npm mercadopago 952324 downloads per month] [PyPI mercadopago 276423 downloads per month] [Stack Overflow 45 questions] [GitHub issues of mercadopago/sdk-nodejs (sdk): 7 open, 89 fixed, median 29.8 days to fix, issue health 60/100] | Lets an agent create checkout preferences, payments, refunds and subscriptions and look up transactions in Latin America's Mercado Pago. | API key / OAuth | ✅ | 🆓 Free to integrate: no API or monthly fees, only per-transaction commissions; free test credentials and test users for sandbox payments | docs |
| Open Exchange Rates | Fetch current and historical foreign-exchange rates for 200+ currencies via a REST API. | API key | — | 🆓 free tier: 1,000 requests/month, USD base only, hourly updates | docs |
| PayPal API ⭐⭐⭐⭐ 4.3/5 · 22 reviews [App Store 4.78 from 6299146 ratings, PayPal - Pay, Send, Save] [npm @paypal/paypal-server-sdk 608788 downloads per month] [PyPI paypal-server-sdk 30749 downloads per month] [Stack Overflow 21028 questions] | Process payments, payouts, invoices, and subscriptions via REST API or PayPal's official MCP server. | API key / OAuth | ✅ | 🆓 free to integrate; pay per-transaction fees only; sandbox for testing | docs |
| Plaid API ⭐⭐⭐⭐ 4.4/5 · 5 reviews [npm plaid 4511025 downloads per month] [PyPI plaid-python 2851165 downloads per month] [Stack Overflow 389 questions] [GitHub 124 stars plaid/plaid-openapi] [GitHub issues of plaid/plaid-node (sdk): 7 open, 216 fixed, median 118.3 days to fix, issue health 63/100] | Link bank accounts and fetch balances, transactions, and identity data via REST API/SDKs. | API key | ✅ | Trial: Sandbox always free; new US/Canada teams (since 2026-04-15) get a free Trial plan with up to 10 Production Items one-time; then pay-as-you-go | docs |
| Polygon.io / Massive [npm @massive.com/client-js 70703 downloads per month] [PyPI massive 241194 downloads per month] [GitHub 400 stars massive-com/mcp_massive] [GitHub issues of massive-com/client-python (sdk): 13 open, 352 fixed, median 40.7 days to fix, issue health 64/100] | Query real-time and historical stocks, options, forex, and crypto market data via REST/WebSocket API. | API key | ✅ | 🆓 free tier available (delayed data, limited calls/min); paid plans for real-time | docs |
| Square API [App Store 4.81 from 607346 ratings, Square Point of Sale (POS)] [npm square 1371287 downloads per month] [PyPI squareup 256685 downloads per month] [Stack Overflow 616 questions] [GitHub 76 stars square/connect-api-specification] [GitHub issues of square/square-nodejs-sdk (sdk): 2 open, 73 fixed, median 40.9 days to fix, issue health 69/100] | Process in-person/online payments, manage orders, invoices, and catalog via REST API and SDKs. | API key / OAuth | ✅ | 🆓 free to integrate; pay per-transaction processing fees; free Sandbox for testing | docs |
| Stripe API ⭐⭐⭐⭐ 4.1/5 · 17 reviews [App Store 4.7 from 68583 ratings, Stripe Dashboard] [npm stripe 95608023 downloads per month] [PyPI stripe 37229330 downloads per month] [Stack Overflow 12545 questions] [GitHub issues of stripe/stripe-node (sdk): 39 open, 953 fixed, median 2.2 days to fix, issue health 89/100] | Create payments, subscriptions, invoices, and refunds programmatically via REST API or the official Stripe MCP server. | API key / OAuth | ✅ | 🆓 free to integrate; pay per-transaction fees only, no monthly fee | docs |
| Wise API [App Store 4.64 from 113388 ratings, Wise: Global Money Transfer] [GitHub 1 stars 2060-io/mcp-wise] | Send international transfers, check exchange rates, and manage multi-currency balances via REST API. | API key / OAuth | ◐ | 🆓 free API access; normal Wise transfer fees apply per transaction; sandbox available | docs |
E-commerce
Manage stores, products, orders and marketplace listings. — 8 services. JSON: catalog/ecommerce.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Amazon Selling Partner API [Stack Overflow 256 questions] [GitHub 923 stars amzn/selling-partner-api-models] [GitHub issues of amzn/selling-partner-api-models (spec): 247 open, 3217 fixed, median 45.7 days to fix, issue health 52/100] | Manage listings, orders, inventory, and reports for an Amazon seller/vendor account via REST API. | OAuth 2.0 | ✅ | 🆓 free API access; requires an existing Amazon Seller/Vendor Central account | docs |
| BigCommerce API ⭐⭐⭐⭐⭐ 5.0/5 · 1 review [App Store 4.5 from 640 ratings, BigCommerce] [PyPI bigcommerce 28958 downloads per month] [Stack Overflow 1667 questions] [GitHub issues of bigcommerce/bigcommerce-api-python (sdk): 21 open, 20 fixed, median None days to fix, issue health 40/100] | Manage catalog, orders, customers, and carts on a BigCommerce store via REST/GraphQL APIs. | API key / OAuth | ✅ | Trial: free 15-day trial store to test the API (partners can create sandbox stores); ongoing use needs a paid BigCommerce plan | docs |
| eBay APIs ⭐⭐⭐⭐ 4.0/5 · 10 reviews [App Store 4.82 from 4969510 ratings, eBay online shopping & selling] [Stack Overflow 1104 questions] [GitHub 42 stars eBay/npm-public-api-mcp] | List items, manage orders/inventory, and search listings across eBay marketplaces via REST APIs. | OAuth 2.0 | ✅ | 🆓 free developer tier with call-volume limits; sandbox environment included | docs |
| Etsy Open API v3 ⭐⭐⭐⭐⭐ 4.5/5 · 4 reviews [App Store 4.92 from 7361572 ratings, Etsy: Shop from Real People] [Stack Overflow 139 questions] | List products, manage orders/shop, and search listings on the Etsy marketplace via REST API. | OAuth 2.0 | ✅ | 🆓 Free: developer keystring at no cost; per-app QPS/QPD rate limits shown in the Developer Portal | docs |
| Mercado Libre API | Lets an agent search items and categories and manage a seller's listings, orders, questions, shipments and promotions on the Mercado Libre marketplace. | OAuth 2.0 | — | 🆓 Free: create an app in DevCenter with a Mercado Libre account (no API fee); rate limited (HTTP 429); marketplace selling fees still apply | docs |
| Printful API ⭐⭐⭐ 3.0/5 · 3 reviews | Create print-on-demand products, sync catalogs, and submit fulfillment orders via REST API. | API key / OAuth | — | 🆓 Free: no monthly fee for API/store connection (pay only for fulfillment); 120 API calls/min general rate limit | docs |
| Shopify Admin / Storefront API [App Store 4.7 from 43132 ratings, Shopify: Sell. Run a business.] [npm @shopify/shopify-api 2666413 downloads per month] [PyPI ShopifyAPI 776012 downloads per month] [Stack Overflow 8768 questions] [GitHub issues of Shopify/shopify-app-js (sdk): 82 open, 306 fixed, median 344.7 days to fix, issue health 39/100] | Manage products, orders, customers, and inventory (Admin API) or build storefronts (Storefront API) via REST/GraphQL. | API key / OAuth | ✅ | 🆓 Free: unlimited free dev stores via a free Partner account/Dev Dashboard for building and testing (no real transactions); live merchant stores need a paid Shopify plan | docs |
| WooCommerce REST API [App Store 4.75 from 7855 ratings, WooCommerce: Store & POS] [npm @woocommerce/woocommerce-rest-api 256707 downloads per month] [PyPI WooCommerce 105595 downloads per month] [Stack Overflow 32808 questions] [GitHub issues of woocommerce/wc-api-python (sdk): 25 open, 57 fixed, median None days to fix, issue health 48/100] | Manage products, orders, and customers on a self-hosted WooCommerce store via REST API. | API key | ✅ | 🆓 Free: open-source WordPress plugin, free to download and use; no platform fees, only your own hosting costs | docs |
Automation and integration platforms
One connection that exposes thousands of third-party app actions to an agent, with managed auth. — 15 services. JSON: catalog/automation-integration.json
| Service | What an agent can do | Auth | MCP | Free tier | Docs |
|---|---|---|---|---|---|
| Activepieces | Build, run and manage no-code flows across 400+ apps via REST API or the built-in MCP server. | API key | ✅ | 🆓 free: open-source, self-hostable at no cost; cloud free plan gives 100 credits/day, no card required | docs |
| Arcade.dev [npm @arcadeai/arcadejs 551784 downloads per month] [PyPI arcadepy 301474 downloads per month] | Execute authorized tool calls (GitHub, Slack, Google, etc.) with managed OAuth via API, SDK, or 200+ MCP servers. | API key / OAuth | ✅ | 🆓 free tier: 2,000 auth events + 2,000 tool calls/mo, no credit card required | docs |
| Composio [npm @composio/core 4733650 downloads per month] [PyPI composio 1726025 downloads per month] [GitHub issues of ComposioHQ/composio (sdk): 66 open, 632 fixed, median 3.2 days to fix, issue health 84/100] | Discover, authorize and execute actions across 1,500+ SaaS toolkits through a unified API, SDK, or MCP session. | API key / OAuth | ✅ | 🆓 free tier: 100,000 tool calls + 50,000 trigger events/mo, no credit card required | docs |
| Gumloop [PyPI gumloop 13306 downloads per month] | Create AI agents, start chat sessions, and trigger no-code automations via REST API, SDKs, or the Gumloop MCP server. | API key / OAuth | ✅ | 14-day free trial of Pro (20,000 credits), requires credit card, no permanent free tier | docs |
| IFTTT API ⭐⭐⭐⭐⭐ 5.0/5 · 4 reviews [App Store 4.61 from 59677 ratings, IFTTT.ai: Automation made easy] [Stack Overflow 212 questions] | Fire a webhook event to trigger pre-configured Applets that act in connected consumer apps (Pro plan required). | API key | ✅ | no free-plan access; Webhooks/API require Pro plan ($2.99+/mo) | docs |
| Keboola Storage API | Lets an agent load and query tables, create SQL and Python transformations, and trigger data pipeline jobs in a Keboola project. | API key / OAuth | ✅ | 🆓 Free plan: 1 project, 120 compute minutes in the first month then 60 minutes/month, extra-small Snowflake backend; no credit card | docs |
| Make API / MCP ⭐⭐⭐⭐⭐ 4.9/5 · 10 reviews | Trigger and manage Make automation scenarios, or call MCP tools, via REST API and a native MCP server/client. | API key | ✅ | 🆓 Free tier: 1,000 credits/month, 2 active scenarios; Make API access requires Core plan or higher | docs |
| Merge (Agent Handler) | Give an agent governed, audited tool access to Salesforce, Slack, Jira and 100+ enterprise apps via API or MCP. | API key | ✅ | 🆓 Free tier: 2,000 credits/month for prototyping/testing; production usage needs a paid Pro ($1,000/mo, 25,000 credits) or Enterprise plan | docs |
| n8n API [Stack Overflow 76 questions] | Create, run and monitor n8n workflows via REST API, and expose or consume tools through MCP trigger/client nodes. | API key | ✅ | 🆓 Free: self-hosted Community Edition (open source, unlimited); n8n Cloud trial has no API access | docs |
| Nango [npm @nangohq/node 2235135 downloads per month] [GitHub issues of NangoHQ/nango (sdk): 22 open, 848 fixed, median 10.4 days to fix, issue health 82/100] | Authorize end users to 400+ third-party APIs/MCP servers and proxy authenticated calls to them from your app or agent. | API key / OAuth | ✅ | 🆓 free tier: 10 connections, 10 compute hours, 10GB data transfer/mo | docs |
| Paragon ActionKit [npm @useparagon/connect 740920 downloads per month] [GitHub 48 stars useparagon/paragon-mcp] | Call thousands of pre-built Tools and Triggers across 130+ SaaS apps (Slack, Salesforce, Gmail) via API or MCP. | API key / OAuth | ✅ | Trial: free trial ('Start free trial'); no lasting free tier; pricing by custom quote based on Connected Users | docs |
| Pipedream Connect [npm @pipedream/sdk 1237762 downloads per month] [GitHub issues of PipedreamHQ/pipedream-sdk-typescript (sdk): 3 open, 7 fixed, median 73.0 days to fix, issue health 54/100] | Call 2,700+ app APIs and run managed-auth actions on end users' behalf via REST API or Pipedream MCP servers. | API key / OAuth | ✅ | 🆓 Free tier: free workspaces get a daily credit limit and limited connected accounts; Connect is free in development mode, production use needs a paid plan | docs |
| StackOne [npm @stackone/ai 1152 downloads per month] [GitHub issues of StackOneHQ/stackone-ai-node (sdk): 1 open, 39 fixed, median 0.6 days to fix, issue health 77/100] | Call 520+ SaaS connectors (HRIS, ATS, CRM, documents) through one unified API or MCP gateway covering 32,000+ actions. | API key | ✅ | 🆓 free tier: 1,000 action-call credits/seat/mo (Starter), no credit card required | docs |
| Superglue [npm @superglue/client 9288 downloads per month] [GitHub issues of superglue-ai/superglue (sdk): 0 open, 33 fixed, median 1.7 days to fix, issue health 96/100] | Connect and orchestrate enterprise systems (ERP, CRM, databases) through a self-serve API and per-integration MCP servers. | API key | ✅ | 🆓 free tier: Pro plan free to start, 3,000 executions/mo and 5M tokens/mo included, self-serve signup | docs |
| Zapier MCP / AI Actions ⭐⭐⭐⭐⭐ 4.8/5 · 22 reviews [Stack Overflow 1140 questions] | Call 9,000+ apps and 40,000+ pre-built actions (Slack, Gmail, Sheets, etc.) through one MCP endpoint. | API key / OAuth | ✅ | 🆓 Free tier: 100 tasks/month; each successful MCP tool call uses 2 tasks (~50 calls/month); more on paid plans | docs |
Model APIs and inference
LLM, embedding and multimodal model endpoints an agent can delegate sub-tasks to. — 18 services. JSON: catalog/model-inference.json
Related directories and registries
Other machine-readable sources agents can use to discover tools:
- Official MCP Registry — The official Model Context Protocol registry; agents can call its REST API (with OpenAPI spec) to search and list available MCP servers. — machine-readable: https://registry.modelcontextprotocol.io/v0/servers
- public-apis/public-apis — A community-curated GitHub list of 1,400+ free public APIs by category, fetchable as raw Markdown for programmatic parsing. — machine-readable: https://raw.githubusercontent.com/public-apis/public-apis/master/README.md
- APIs.guru OpenAPI Directory — An open, unauthenticated directory of 2,500+ public OpenAPI specs; agents fetch list.json to discover APIs and their OpenAPI definitions. — machine-readable: https://api.apis.guru/v2/list.json
- punkpeye/awesome-mcp-servers — A widely-starred curated GitHub list of MCP servers by category, fetchable as raw Markdown for automated discovery. — machine-readable: https://raw.githubusercontent.com/punkpeye/awesome-mcp-servers/main/README.md
- Smithery — An MCP server registry and hosting gateway (6,000+ servers) whose REST API lets agents search servers and obtain connection URLs. — machine-readable: https://api.smithery.ai/servers
- Glama MCP Directory — A large scanned and scored registry of 90,000+ open-source MCP servers, queryable via a bearer-authenticated REST API. — machine-readable: https://glama.ai/api/mcp/v1/servers
- mcp.so — A community MCP server marketplace and browsable directory site, but it has no publicly documented JSON/REST API for programmatic access.
- PulseMCP — A directory of 21,800+ MCP servers updated daily; its Sub-Registry REST API (API key required) lets agents list and search servers. — machine-readable: https://api.pulsemcp.com/v0.1/servers
- llms.txt convention / directory — An open convention for a root-level llms.txt file giving agents a concise Markdown map of a site's key content; a community directory indexes published files, though it exposes no JSON API. — machine-readable: https://directory.llmstxt.cloud
- Postman API Network — The largest network of public API collections shared on Postman, browsable on the web but with no documented public API for programmatic discovery.
- RapidAPI Hub (Nokia API Hub) — A large third-party API marketplace with growing MCP support for agents, but with no public, unauthenticated catalog endpoint for bulk discovery.
Contributing
Edit only the files in data/ (usually data/catalog.json), run python scripts/build.py to regenerate the English, Polish and LLM files, and open a pull request. Every new entry must link to the vendor's official API documentation. Step-by-step guide: CONTRIBUTING.md.
See also
References
The initial candidate list was compiled from:
- GetStream — AI Agent Tools Catalog
- StackOne — AI Agent Tools Landscape 2026
- Mastra — Best AI agent search tools
- abitwise — AI-tools
- Sylus — Top-rated connectors for AI tool integrations
Generated from data/catalog.json on 2026-11-04.
來源：README.md，提交 93b50e6
工具
4search_apis
Search APIs and MCP servers
Search 300+ catalog entries of third-party APIs and MCP servers (each with a last-checked date) by operation or keywords, with optional category and quality filters. `match`: exact = the entry lists the operation and its example call or an MCP tool performs it; listed = the entry lists it without that evidence; adjacent = a related operation; topic = word match only. Exact is still a search label, not proof that the endpoint or tool accepts the user's actual inputs. `mcp_fit` says whether the MCP server has a tool for the operation. Ranking weighs operation fit, evidence, lasting free plan, card and auth effort, and bulk limits, not budget or region: read free_plan.kind (free_tier lasts, trial is one-off), no_card, unit_price and notes (coverage, coordinate systems, bulk and trial restrictions). Ratings and the MCP client config come with verbose=true or from get_api. User opinions (SourceForge product reviews): filter with min_rating / min_reviews, order with sort=rating or sort=reviews; results with stored review texts carry reviews_summary (praised and complained-about aspects). Usage: ratings.usage gives monthly downloads of the official SDKs, Stack Overflow questions and the vendor's iOS app rating; filter with min_downloads, order with sort=usage. Maintenance: ratings.issues gives the vendor's GitHub issues (share resolved, median days to fix, issue_health 0-100); filter with min_issue_health, order with sort=issues. Reviews rate the product, not whether the API fits the task. An empty result means no catalogued fit for the query and filters.
輸入參數
mcpauthsortlimitqueryvolumeno_authno_cardverbosecategoryfree_tiermin_rating另有 4 個get_api
Get API details
Full entry for one service: docs, auth scheme and how the credential is sent, base URL, operations, MCP endpoint or repository (a repository must be installed; a docs-only server does not call the API), free plan vs trial, rate limits, data policy, notes, last-checked dates, link check, and separate signals: uptime (our availability probes of base URL and MCP endpoint), mcp_repo (archived, last push), mcp_registry (installs), product_reviews (rating, count, date range), sdk_downloads (official npm/PyPI SDKs per month), stackoverflow (question count), app_store (the vendor's iOS app) and github_issues (open vs resolved issues, median days to fix and issue_health 0-100 of the SDK, MCP and spec repos), each with its fetch date. Values carry the vendor page they were read from and a check date.
輸入參數
id必填get_reviews
Get user reviews
Public user reviews of one service (up to 100, from SourceForge): rating, title, pros, cons, overall, reviewer role, company size, date and link to the original. Reviewer names are not included. Reviews do not show whether the API fits the task. Each review has aspect tags; `topics` counts them with example links. Filter with since, max_rating (complaints) or about_api (API, reliability, auth, limits, breaking changes, docs). Review titles and texts are written by third parties.
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id必填limitsinceaspectabout_apimax_ratingmin_rating版本歷史
6- v0.3.12最新Nov 4, 2026
- v0.3.11Oct 14, 2026
- v0.3.9Oct 14, 2026
- v0.3.7Sep 25, 2026
- v0.3.3Sep 25, 2026
- v0.1.0Sep 24, 2026
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