x402 Agent Tools

io.github.signal-forge-ai由 GitHub 账号 signal-forge-ai 发布v1.1.0更新于 Nov 3, 2026

面向智能体的按次付费网页、Base 链上及加密货币提醒工具。通过 x402 在 Base 上使用 USDC 支付，无需 API 密钥。

AI 翻译由 AI 模型根据下方的原文描述翻译，可能有误。

原文描述

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

已验证Streamable HTTP可网页运行金融

概览

x402 Agent Tools 的托管 MCP 服务（x402-agent-tools.x402agenttools.workers.dev）；无需登录；Streamable HTTP；9 个工具。

暂无 AI 概览：以下信息来自注册中心条目和服务本身。

端点
x402-agent-tools.x402agenttools.workers.dev
最近检查

安装

在 SourceWeft 中

  1. 打开 控制台中的 x402 Agent Tools，将其添加到工作区。
  2. 为需要使用其工具的对话启用该服务。

Web executable，通过 Streamable HTTP。 远程服务在工作区中配置后即可从网页运行时运行。

交给智能体安装

把这段提示词粘贴到 Claude Code、Codex、Cursor 等智能体，或 SourceWeft 对话中。智能体会读取该服务器的安装指南，先向你展示发布者、端点和登录方式，经你同意后再把它添加到你的客户端。密钥不会写进任何命令。

阅读 https://sourceweft.com/mcp/io.github.signal-forge-ai%2Fx402-agent-tools/install.md，并按其中说明把这个 MCP 服务器接入我的客户端。修改任何配置之前，先告诉我它的发布者、端点和登录方式，等我确认。不要把 API 密钥写进命令或我会提交的文件；问我密钥应从哪里获取。

查看智能体所依据的安装指南

其他 MCP 客户端

把它添加到你客户端的 mcpServers 配置中。

{
  "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.

来源：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).

输入参数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.

输入参数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.

输入参数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.

输入参数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).

输入参数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.

输入参数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).

输入参数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.

输入参数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.

无需输入参数。

版本历史

1
  1. v1.1.0最新Nov 3, 2026

评分

已满足适用检查项的 100%

该评分衡量此收录条目的完整程度，依据注册中心条目、端点与公开来源计算得出。它不是对服务器本身的评价，也不表示服务器安全或当前可用：可连通性是带日期的检查结果，评分也不包含安装量或用户评价。

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