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x402-btc-radar — Agent Plugin(MCP + Skill)

把 BTC Radar / Token Risk x402 付费 API 包成 AI 助手可直接调用的插件。 上游:https://x402-btc-radar.jinli-x402.workers.dev(Base 主网 USDC,已收录 Coinbase CDP x402 Bazaar)。

调用方用自己的钱包付费。本插件不含任何私钥或密钥。

工具与价格

MCP 工具

上游路由

价格(USDC,Base)

health

GET /health

免费

token_risk

GET /v1/token/risk?chain=base|bsc&address=0x…

$0.01

token_risk_batch

POST /v1/token/risk/batch,{"chain":"base","addresses":[…]} 或 {"tokens":[{"chain","address"}…]},最多 10 个

$0.05

btc_radar_latest

GET /v1/btc/radar/latest

$0.01

project_info

GET /v1/project/:slug

$0.05

参数错误(400)、未知项目(404)、无数据(503)都在付款前返回,不扣钱。

Related MCP server: NEX Agent Co. MCP Server

环境变量(在 MCP 服务器进程里设置)

变量

必填

说明

X402_PRIVATE_KEY

付费工具需要

你自己的 Base 钱包私钥(0x + 64 位十六进制)。钱包里放少量 USDC 即可,签的是 EIP-3009 授权,不需要 ETH。建议专门开一个小额钱包。

MAX_PAYMENT_USD

否

单次付款上限,默认 0.05,超过即拒付。

BTC_RADAR_API_URL

否

覆盖上游地址(仅测试用,必须 https)。

没配 X402_PRIVATE_KEY 时付费工具不会崩,而是返回 payment_required,附带真实报价(价格、收款地址、网络),并提示可改用任何 x402 客户端经 CDP Bazaar 直接调用。

安全校验(写死,不可配置)

每次收到 402 报价,签名前逐项检查,任何一项不符就拒付(payment_refused):

  • payTo 必须是 0xabe2cccdafed6cec19e47a3794eeb487e646bc0f

  • 网络必须是 Base 主网 eip155:8453

  • 资产必须是 Base USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

  • scheme 必须是 exact

  • 金额 ≤ MAX_PAYMENT_USD

安装

Cursor / 支持 Agent Plugins 的客户端

插件目录结构(Agent Plugins 1.0 标准):

plugin.json                # 清单
mcp.json                   # stdio MCP 服务器:node ./dist/btc-radar-mcp.mjs
skills/btc-radar/SKILL.md  # 何时调用、价格、规则
dist/btc-radar-mcp.mjs     # 打包好的单文件服务器(无需 npm install)

需要 Node.js ≥ 20。私钥通过启动客户端的环境变量传入(不要写进 mcp.json)。

手动加到 MCP 配置(任意客户端)

{
  "mcpServers": {
    "x402-btc-radar": {
      "command": "node",
      "args": ["/绝对路径/x402-btc-radar-plugin/dist/btc-radar-mcp.mjs"],
      "env": { "X402_PRIVATE_KEY": "${env:X402_PRIVATE_KEY}", "MAX_PAYMENT_USD": "0.05" }
    }
  }
}

(发布到 npm 后可改为 "command": "npx", "args": ["-y", "x402-btc-radar-mcp"]。)

开发

npm install
npm run typecheck
npm test          # 报价校验 + 模拟 402 流程(一次性随机私钥、mock 服务器,不花钱)
npm run build     # esbuild 打包到 dist/btc-radar-mcp.mjs
npm run smoke     # 真 stdio:initialize / tools/list / health(主网) / 无私钥调付费工具

English (short)

MCP server + skill for a pay-per-call x402 API on Base mainnet (USDC). Tools: health (free), token_risk ($0.01), token_risk_batch ($0.05, ≤10 tokens), btc_radar_latest ($0.01), project_info ($0.05). Set X402_PRIVATE_KEY (your own wallet, USDC only, no ETH) to enable payments; MAX_PAYMENT_USD caps each payment (default 0.05). Quotes with an unexpected payee, network or asset are refused. Not investment advice.

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