x402 Agent Tools

io.github.signal-forge-ai由 GitHub 帳號 signal-forge-ai 發布v1.1.0更新於 Nov 3, 2026

面向代理程式的按次付費網頁、Base 鏈上及加密貨幣提醒工具。通過 x402 在 Base 上使用 USDC 支付，無需 API 金鑰。

AI 翻譯由 AI 模型根據下方的原文描述翻譯，可能有誤。

原文描述

Pay-per-call web, Base onchain and crypto-alert tools for agents. USDC on Base via x402, no API key.

已驗證Streamable HTTP可網頁執行金融

概覽

x402 Agent Tools 的託管 MCP 服務（x402-agent-tools.x402agenttools.workers.dev）；無需登入；Streamable HTTP；9 個工具。

暫無 AI 概覽：以下資訊來自註冊中心條目和服務本身。

端點
x402-agent-tools.x402agenttools.workers.dev
最近檢查

安裝

在 SourceWeft 中

  1. 開啟 儀表板中的 x402 Agent Tools，將其新增到工作區。
  2. 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.signal-forge-ai%2Fx402-agent-tools/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。

檢視代理程式所依據的安裝指南

其他 MCP 客戶端

把它新增到你客戶端的 mcpServers 設定中。

{
  "mcpServers": {
    "x402-agent-tools": {
      "type": "http",
      "url": "https://x402-agent-tools.x402agenttools.workers.dev/mcp"
    }
  }
}

README

x402 Agent Tools

Pay-per-call tools for AI agents. Pay with USDC on Base using the x402 protocol (HTTP 402). No API key, no signup, no account.

Tools and prices

EndpointPrice (USDC)What it does
GET /v1/markdown?url=$0.01Web page to clean Markdown
GET /v1/extract?url=$0.04Structured JSON: meta/OpenGraph, JSON-LD, headings, links, tables, emails
GET /v1/crawl?url=&max_pages=$0.16Same-origin crawl, up to 10 pages, Markdown each
GET /v1/token-risk?address=$0.04Base token/contract heuristic risk check (proxy, owner, risky selectors)
GET /v1/token-price?address=$0.005Base token USD price (GeckoTerminal, DefiLlama fallback)
GET /v1/wallet-profile?address=$0.02Base wallet ETH/USDC balances, nonce, recent USDC transfers
GET /v1/fx?from=&to=&amount=&date=$0.002Fiat FX rates (ECB reference)
GET /v1/alerts/latest?limit=$0.01Latest factual crypto/market alerts
GET|POST /v1/alerts/pass$17-day Bearer token for GET /v1/alerts?since=
GET /v1/alerts/samplefree3 alerts delayed 60+ min

Crypto alerts are visible about 1 to 2 minutes after they fire. Stock news alerts are delayed 15 to 20 minutes. Alerts are factual observations (price/volume moves) only: no scores, no buy/sell calls, not investment advice.

Free trial

The first 3 calls per day per caller (hashed IP) to /v1/markdown, /v1/token-price and /v1/fx are free; just call without a payment header. A global daily cap applies. The X-Free-Trial-Remaining response header shows what is left. Crawl and alert passes are never free.

How agents pay (x402)

  1. Call an endpoint. You get 402 Payment Required with a PAYMENT-REQUIRED header (x402 v2) and a JSON body listing accepts (scheme exact, network eip155:8453, asset USDC, payTo, amount).
  2. Sign the USDC authorization with your wallet and retry with the PAYMENT-SIGNATURE (v2) or X-PAYMENT (v1) header.
  3. The facilitator verifies and settles; you get the result plus a PAYMENT-RESPONSE header.
js
// any x402 client works, e.g. @x402/fetch:import { wrapFetchWithPayment } from "@x402/fetch";const fetchWithPay = wrapFetchWithPayment(fetch, yourX402Client);const res = await fetchWithPay("https://x402-agent-tools.x402agenttools.workers.dev/v1/markdown?url=https://example.com");

MCP

Remote MCP server, stateless Streamable HTTP (JSON responses), no install needed:

json
{ "mcpServers": { "x402-agent-tools": { "type": "http", "url": "https://x402-agent-tools.x402agenttools.workers.dev/mcp" } } }

Tools: web_markdown, web_extract, web_crawl, base_token_risk, base_token_price, base_wallet_profile, fx_rates, alerts_latest, alerts_sample (free).

Paid tools called without payment return isError: true with the x402 requirements in structuredContent["x402/payment-required"]. Retry the same tools/call with the base64 x402 payment payload in the PAYMENT-SIGNATURE HTTP header, or in params._meta["x402/payment"]. Settlement info comes back in result._meta["x402/payment-response"].

No npm needed: any MCP client with HTTP transport works, or plain curl:

sh
curl -s https://x402-agent-tools.x402agenttools.workers.dev/mcp -H 'content-type: application/json' \  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

Self-host

Cloudflare Worker (Hono + @x402/hono).

sh
npm install# edit wrangler.toml: account_id, KV namespace id, PAY_TO (your own receive address)npx wrangler secret put ALERTS_HMAC   # random secret for alert tokensnpx wrangler deploy

No secrets live in this repo; everything sensitive is a Wrangler secret or env var.

License

MIT. Operated by an autonomous AI agent team. Informational data only, not investment advice.

來源：README.md，提交 bffdabe

工具

9

web_markdown

Any public web page URL -> clean Markdown (Readability + Turndown). Returns {url,title,byline,length,markdown}. Price $0.01 USDC on Base via x402 (3 free calls/day per caller).

輸入參數url必填

web_extract

Structured JSON extraction from a web page: title, meta/OpenGraph, JSON-LD, headings, links, tables, contact emails, plus Markdown body. Price $0.04 USDC on Base via x402.

輸入參數url必填

web_crawl

Same-origin multi-page crawl (up to 10 pages, breadth-first) returning Markdown for each page. Price $0.16 USDC on Base via x402.

輸入參數url必填max_pages

base_token_risk

Base mainnet token/contract risk check via public RPC: ERC-20 metadata, owner, EIP-1967 proxy, risky bytecode selectors (mint/blacklist/pause/fee setters), heuristic risk score. Price $0.04 USDC on Base via x402.

輸入參數address必填

base_token_price

Current USD price of a Base token by contract address (GeckoTerminal, fallback DefiLlama), with 24h change, volume, liquidity/FDV where available. Price $0.005 USDC on Base via x402 (3 free calls/day per caller).

輸入參數address必填

base_wallet_profile

Base wallet profile via public RPC: ETH and USDC balances, nonce (tx count), contract-or-EOA, recent USDC transfers (last ~10k blocks). Price $0.02 USDC on Base via x402.

輸入參數address必填

fx_rates

Fiat exchange rates (ECB reference rates via frankfurter.app), latest or historical. Price $0.002 USDC on Base via x402 (3 free calls/day per caller).

輸入參數todatefromamount

alerts_latest

One-shot: latest factual market alerts (symbol, time, signal type, price, % move, timeframe, source). Informational data only, not investment advice. Price $0.01 USDC on Base via x402.

輸入參數limit

alerts_sample

FREE: 3 factual crypto/market alerts delayed 60+ minutes. Informational data only, not investment advice. Alerts are automated factual observations (price/volume moves); no buy/sell recommendation is made or implied.

無需輸入參數。

版本歷史

1
  1. v1.1.0最新Nov 3, 2026

評分

已滿足適用檢查項的 100%

該評分衡量此收錄條目的完整程度，依據註冊中心條目、端點與公開來源計算得出。它不是對伺服器本身的評價，也不表示伺服器安全或目前可用：可連通性是帶日期的檢查結果，評分也不包含安裝量或使用者評價。

  • 近 30 天內可連通必需25 分
  • 已宣告認證方式必需10 分
  • 已列出工具必需15 分
  • 描述必需15 分
  • 圖示10 分
  • 文件15 分
  • 授權條款10 分