MCP 服务器

agent-tools-mcp

Enables MCP-compatible agents to discover and call x402 paid services from a directory of over 2,000 APIs.

README

agent-tools-mcp

Discover and call x402 paid services from any MCP-compatible agent (Claude, Cursor, Cline, Continue, …).

Also listed on Smithery for one-click hosted install.

Backed by agent-tools.cloud, an open directory of 2,000+ x402 paid APIs (awesome-x402, x402scan, x402.org/ecosystem, …). Call the stats tool for live counts.

Tools

Tool	What it does
`search(intent, top_k, max_price_usd, category)`	Natural-language search across the directory
`get(slug)`	Full details (URL, price, call template) of a service
`list_categories()`	Browse categories
`stats()`	Directory size & health snapshot

What agents get back

search() and get() return a normalised service record. For services hosted directly on agent-tools.cloud, every paid endpoint advertises the full x402 v2 extensions.bazaar block in its 402 challenge — including JSON Schema and a worked request body example — so the agent can call without trial-and-error:

// shape of get("agent-tools-cloud-signal-token")
{
  "slug": "agent-tools-cloud-signal-token",
  "endpoint": "https://agent-tools.cloud/v1/signal/token",
  "method": "POST",
  "price_usd": 0.01,
  "network": "base-mainnet",
  "asset": "USDC",
  "bazaar": {
    "info": {
      "input":  { "type": "http", "method": "POST", "bodyType": "json",
                  "body":   { "chain": "base", "token": "0x4200...0006" } },
      "output": { "type": "json",
                  "example": { "signal": "buy", "score": 0.78, "confidence": 0.62 } }
    },
    "schema": { "type": "object", "properties": { "body": { "properties":
                  { "chain": {"type":"string","enum":["base","ethereum","solana"]},
                    "token": {"type":"string"} },
                  "required": ["chain", "token"] } } }
  }
}

The response also passes through payment-required (challenge) and payment-response headers, both exposed via Access-Control-Expose-Headers so a browser-side fetch() (e.g. x402-fetch) can read them.

Third-party entries scraped from awesome-x402 / x402scan / x402.org are passed through as-is and may or may not include bazaar metadata.

Quick Start

Claude Code CLI

claude mcp add agent-tools -- uvx agent-tools-mcp

Claude Desktop / Cursor / Cline

Add to your MCP config (~/.config/Claude/claude_desktop_config.json, ~/.cursor/mcp.json, …):

{
  "mcpServers": {
    "agent-tools": {
      "command": "uvx",
      "args": ["agent-tools-mcp"]
    }
  }
}

Remote (no install)

Most clients also accept a url-based remote MCP server (Streamable HTTP; the client must send Accept: application/json, text/event-stream):

{
  "mcpServers": {
    "agent-tools": { "url": "https://agent-tools.cloud/mcp-discovery/" }
  }
}

From source

pip install agent-tools-mcp        # or `uv tool install agent-tools-mcp`
agent-tools-mcp                    # stdio server, ready for an MCP client

Environment Variables

Var	Default	Purpose
`AGENT_TOOLS_API_BASE`	`https://agent-tools.cloud`	Point at a different deployment (e.g. self-hosted)
`AGENT_TOOLS_LOG_LEVEL`	`INFO`	Server log level (stderr only)
`AGENT_TOOLS_HTTP_LOG_LEVEL`	`WARNING`	httpx/httpcore log level

Debugging

# Probe with the official MCP Inspector
npx -y @modelcontextprotocol/inspector uvx agent-tools-mcp

# Or raw JSON-RPC
echo '{"jsonrpc":"2.0","id":1,"method":"tools/list"}' | uvx agent-tools-mcp