Webhook Relay

com.agishubv2.1.1Updated Sep 19, 2026

Fire-and-forget webhooks for agents with guaranteed, retried delivery and status polling. x402

VerifiedStreamable HTTPWeb executableOther

Installation

In SourceWeft

  1. Open Webhook Relay in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "webhook-relay": {
      "type": "http",
      "url": "https://api.agishub.com/mcp/webhook"
    }
  }
}

README

AgisHub

Pay-per-call tools for AI agents — no signup, no API keys, just USDC.

▶ Try any tool live in your browser — no install

Live data & utilities over x402 micropayments on Base. Your agent pays a few tenths of a cent per call from its own wallet; no accounts, no monthly plans.

[x402] [Base] [MCP] [License]

Website · Live API · OpenAPI

Why AgisHub

Traditional APIs make an agent stop and ask a human: sign up, create an account, copy an API key, add a credit card, read the docs. AgisHub tools are callable the moment an agent has a funded wallet — the server answers HTTP 402, the agent signs a USDC payment on Base, and the data flows back. Under a second, no human in the loop.

Raw API + key + planSingle‑vendor MCPAgisHub
Sign‑up / API keyrequiredrequirednone
Billingmonthly / creditssubscriptionper call (USDC)
Agent can pay itself✗✗✓ (x402)
Free tier for discoveryvariesvaries✓ (free MCP)
Multiple tools, one door✗one vendor✓

Free MCP tier to discover and prototype; pay‑per‑call x402 HTTP tier for production, priced per request in USDC.

Two doors, one platform

  • MCP (free) — remote Model Context Protocol server. Point Claude / Cursor / any MCP client at the URL and the tools appear.
  • HTTP x402 (paid) — POST /v1/<tool>; unpaid requests get a 402 challenge, the client signs a USDC payment (EIP‑3009 on Base) and retries. USDC contract 0x8335…2913.
MCP (free):   https://api.agishub.com/mcpHTTP (paid):  POST https://api.agishub.com/v1/<tool>Discovery:    https://api.agishub.com/openapi.json

Tools

34 tools across 7 categories. Prices are per call in USDC on Base, from $0.01. Every tool is free to try over MCP; the HTTP endpoint is the one that charges.

🤖 AI & Inference

Language models, embeddings and classification — no external API key.

ToolWhat it doesEndpointCost
ai.chatAsk a general-purpose LLM a question or give it an instruction, with an optional system prompt. No external API key required./v1/chat$0.02
ai.classifyClassify a text into exactly one of the candidate labels you provide (e.g. sentiment, topic, intent)./v1/classify$0.02
ai.embedTurn text into a numeric embedding vector for semantic search, RAG and similarity. Multilingual./v1/embed$0.01
ai.extractExtract named entities from text — people, organizations, locations, dates and miscellaneous — returned as structured JSON./v1/extract$0.02
ai.summarizeSummarize a block of text into a short abstract, with an optional target length. No external API key required./v1/summarize$0.02

🕸️ Search & Web

Read, scrape, crawl and map any public page.

ToolWhat it doesEndpointCost
web.browserDrive a headless browser: open a URL and run an ordered list of steps — click, type, press keys, wait, extract text and screenshot. For flows the plain scraper can't reach (logins, forms, multi-step pages)./v1/browser-automate$0.10
web.crawlCrawl multiple pages of a site, respecting link depth and domain limits. Returns async job_id; results include markdown or HTML per page. Use it to fetch and process many pages of content at once./v1/crawl$0.10
web.extractFetch any public web page and return its main content as clean, token-efficient Markdown (title, description, headings, links, lists). Set render:true to execute JavaScript first for single-page apps or JS-heavy pages that would otherwise come back empty. Built for RAG and for agents that need to read the contents of a URL./v1/web-scraper$0.03
web.extract_structuredAI-powered structured extraction: give a URL plus a natural-language prompt and/or a JSON Schema, and get back clean structured JSON (e.g. product name, price, rating). Renders the page in a headless browser first, so it works on SPAs./v1/extract-structured$0.05
web.linksReturn every hyperlink on a JavaScript-rendered page as a list of absolute URLs, with options to keep only visible links or only same-site links. Backed by a headless browser. Use it to map a site or seed a crawler./v1/links$0.03
web.mapDiscover all URLs reachable from a domain within a link depth limit. Returns a flat list of absolute URLs, respects robots.txt crawl delays. Use it to map a site's structure before crawling./v1/crawl-map$0.05
web.scrapeExtract specific elements from a JavaScript-rendered page by CSS selector. Give a list of selectors (e.g. 'h1', '.price', 'a.product') and get back the text and attributes of every match. Backed by a headless browser, so it works on SPAs and JS-heavy pages./v1/scrape$0.03
web.screenshotCapture a PNG screenshot of any public URL — full page or just the viewport, at a chosen size — returned base64-encoded. Backed by a headless browser./v1/screenshot$0.03
web.snapshotCapture several representations of a page in one call — rendered HTML plus a PNG screenshot by default, and optionally Markdown and the accessibility tree. Backed by a headless browser. Saves round-trips when an agent needs both the content and a visual of a page./v1/snapshot$0.05

📊 Data & Analytics

Time, timezones, units and currency.

ToolWhat it doesEndpointCost
data.convert_unitsConvert a value between units of the same category: length, mass, volume, speed, area, digital storage, time, and temperature (Celsius/Fahrenheit/Kelvin)./v1/units-convert$0.01
data.currency_convertConvert an amount between currencies using live daily exchange rates (ISO 4217 codes, e.g. USD, EUR, GBP, JPY). Returns the converted amount and the rate used./v1/currency-convert$0.01
time.calculateTimezone-aware date arithmetic: add or subtract a duration to a datetime (days are calendar-based and DST-safe; hours and minutes are absolute), or compute the difference between two datetimes that may be in different zones./v1/date-calculate$0.01
time.convertConvert a specific date/time from one IANA timezone to another (single or batch). Accepts ISO 8601 or natural language ('next Tuesday 3pm'). Returns the converted datetime with UTC offset, zone abbreviation and DST flag./v1/time-convert$0.01
time.holidayCheck whether a given date is a public holiday in a country (identified by its ISO 3166-1 alpha-2 code), and return the holiday name if so. Backed by an authoritative public-holiday dataset./v1/time-holiday$0.01
time.meeting_slotsFind working-hour time slots that overlap across participants in different timezones for a meeting of a given duration, excluding weekends and (when a country is given per participant) that person's public holidays. Free tier returns at most 1 slot; the paid endpoint returns every matching slot (see 'upgrade' in the response)./v1/meeting-slots$0.10
time.nowGet the current local time in an IANA timezone, including the UTC offset, zone abbreviation and whether DST is in effect. Use whenever you need to know what time it is 'now' somewhere./v1/time-now$0.01
time.offsetGet the exact UTC offset of an IANA timezone at a given instant, DST-aware. Correctly handles fractional offsets such as India +05:30 and Nepal +05:45./v1/time-offset$0.01
time.timezonesList or search valid IANA timezone identifiers by city/region/country, and resolve a city/country name to its timezone(s). Use it to discover the exact identifier to pass to the other tools./v1/timezones$0.01

💱 Market Data

Live crypto prices.

ToolWhat it doesEndpointCost
market.crypto_priceGet live USD spot prices for one or more cryptocurrencies by ticker symbol (e.g. BTC, ETH, SOL)./v1/crypto-price$0.01

🖼️ Media & Generation

Audio, images and documents.

ToolWhat it doesEndpointCost
audio.speakConvert text into spoken audio (returned base64-encoded MP3), in several languages./v1/audio-speak$0.05
audio.transcribeTranscribe an audio file (given by public URL) to text. Handles mp3, wav, m4a, ogg and more./v1/audio-transcribe$0.05
document.pdfRender a public URL or a raw HTML string into a PDF document, returned base64-encoded. Backed by a headless browser. Use for invoices, reports, receipts and any HTML-to-PDF need./v1/pdf$0.05
image.generateGenerate an image from a text prompt (returned base64-encoded PNG)./v1/generate-image$0.10

🔧 Developer Tools

QR codes, short links and guaranteed webhook delivery.

ToolWhat it doesEndpointCost
qr.generateGenerate a QR code for any text or URL. Returns an inline SVG plus a data URI, with selectable size, quiet-zone margin and error-correction level./v1/qr-generate$0.01
url.shortenShorten a long URL into a compact api.agishub.com/s/ link that redirects to the original. Codes are stored for a year./v1/shorten$0.01
webhook.sendDeliver a webhook (POST/PUT/PATCH a JSON payload to a URL) with guaranteed, retried delivery. Returns immediately with a job_id; AgisHub keeps retrying in the background until it succeeds./v1/webhook-send$0.02
webhook.statusCheck the delivery status of a webhook job (queued / retrying / delivered / failed) by its job_id./v1/webhook-status$0.01

🧠 Knowledge & Memory

Persistent, semantically searchable memory.

ToolWhat it doesEndpointCost
memory.searchSemantically search a memory collection (namespace) and return the most relevant stored entries. The retrieval half of RAG./v1/memory-search$0.01
memory.storeStore a piece of text in a persistent, searchable memory collection (namespace). Embedded and indexed for later semantic recall./v1/memory-store$0.01

Quick start

Use the free MCP tools (Claude Code example):

bash
claude mcp add --transport http timezone https://api.agishub.com/mcp

Pay per call over HTTP x402 (any x402 client / wallet):

bash
# Unpaid → 402 challenge; an x402-aware client signs & retries automatically.curl -X POST https://api.agishub.com/v1/web-scraper \  -H 'content-type: application/json' \  -d '{"url":"https://example.com","render":true}'

Your agent's wallet only needs USDC on Base — the facilitator covers gas.

For agents & LLMs

  • Payments are real USDC on Base mainnet and irreversible. Fund a dedicated agent wallet with a small balance; that balance is your spending cap.
  • The free MCP tier never charges. Only the /v1/* (x402 HTTP) routes take payment.
  • extract fetches arbitrary public URLs; it will not reach private/internal hosts.

Pricing

Per‑call, in USDC on Base — no subscription, no signup, no API key. Five tiers, by what a call actually costs to run:

TierWhatExamples
$0.01Lookups, conversions, memorytime.now, data.currency_convert, memory.search
$0.02LLM inference, guaranteed deliveryai.chat, ai.classify, webhook.send
$0.03Browser, one pageweb.scrape, web.extract, web.screenshot
$0.05Heavy rendering, mediaweb.snapshot, document.pdf, audio.transcribe
$0.10Orchestration, generationweb.crawl, web.browser, image.generate

Roughly: $1 ≈ 100 timezone calls, ≈ 33 web extractions, or 10 crawls of up to 100 pages each. Settlement fees on Base are a fraction of a cent and paid by the facilitator.

web.crawl and web.map are capped per call (100 pages, 200 URLs) and priced flat, so a larger site is several calls at the same rate rather than one unbounded charge.

License

MIT © AgisHub

Source: README.md at commit 0fbbc2d

Tools

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Version history

1
  1. v2.1.1LatestSep 16, 2026