x402search — Pay-Per-Search API Discovery for AI Agents

Created By

x402-index14 days ago

Search 13,000+ x402-enabled APIs from your AI agent. No API key needed — your wallet pays $0.01 USDC per search via the x402 protocol. Works with Claude, Cursor, and Windsurf.

# x402

# search

Overview Content Tools Comments

Content

x402search MCP Server

Search 13,000+ x402-enabled HTTP APIs from any MCP-compatible agent.

Version: 1.0.1 · License: MIT · Cost: $0.01 USDC per search · Base mainnet · No account needed

npm: https://www.npmjs.com/package/x402search-mcp

Requirements

A wallet private key
USDC on Base mainnet (eip155:8453)
Get USDC on Base: https://www.coinbase.com/how-to-buy/usdc

Install: Claude Desktop / Claude Code

Add to your claude_desktop_config.json:

"mcpServers": { "x402search": { "command": "npx", "args": ["x402search-mcp@1.0.1"], "env": { "EVM_PRIVATE_KEY": "0xYOUR_PRIVATE_KEY_HERE" } } }

Install: Cursor

Add to your .cursor/mcp.json — same config block as above.

Install: Windsurf

Add to your Windsurf MCP config — same config block as above.

Quick Test (no config needed)

npx x402search-mcp@1.0.1

Tool: search_x402_apis

Parameters:

query (string, required): e.g. "weather data", "image generation"
network (string, optional): e.g. "eip155:8453" for Base mainnet
max_price_usdc (number, optional): e.g. 0.01 to filter by price
limit (number, optional): max results, default 10, max 50

Server Config

{
  "mcpServers": {
    "x402search": {
      "command": "npx",
      "args": [
        "-y",
        "x402search-mcp"
      ],
      "env": {
        "WALLET_PRIVATE_KEY": "<YOUR_PRIVATE_KEY>"
      }
    }
  }
}

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