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MCP server · Blockchain

io.github.x402-index/x402search-mcp

by · github.com/x402-index/x402search-mcp

Search 13,000+ x402-enabled APIs from your AI agent. Powered by x402search.xyz

Unclaimed last commit 6 months ago blockchain
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About io.github.x402-index/x402search-mcp

io.github.x402-index/x402search-mcp is an MCP server published by x402-index in the Blockchain category: search 13,000+ x402-enabled APIs from your AI agent. Powered by x402search.xyz.

The repository has 2 stars and 0 forks, with the last commit 6 months ago. Six months or more without a commit doesn't mean the server is broken, but check the open issues before depending on it in production.

Install

Claude Code
claude mcp add io-github-x402-index-x402search-mcp -- npx -y x402search-mcp
npx
npx -y x402search-mcp

This server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.

Tools (1)

search_x402_apisSearch 14,000+ x402-enabled HTTP APIs by capability, category, network, or keyword. Returns ranked results with endpoint URLs, pricing, and payment metadata. Use this to discover paid APIs for any capability your agent needs. Costs $0.01 USDC per search on Base mainnet.

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Security checks

  • ✓README presentThe repository ships documentation.

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README

x402search MCP Server

Search 14,000+ x402-enabled HTTP APIs from any MCP-compatible agent.

Version: 1.0.3 · License: MIT · Cost: $0.01 USDC per search · Base mainnet · No account needed

npm: https://www.npmjs.com/package/x402search-mcp
PyPI: https://pypi.org/project/x402search-mcp
API: https://x402search.xyz

Requirements

Install: Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "x402search": {
      "command": "npx",
      "args": ["x402search-mcp@1.0.3"],
      "env": {
        "EVM_PRIVATE_KEY": "0xYOUR_PRIVATE_KEY_HERE"
      }
    }
  }
}

Config file location:

  • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
  • Windows: %APPDATA%\Claude\claude_desktop_config.json

Install: Claude Code

claude mcp add x402search -- npx x402search-mcp@1.0.3

Then set your key:

export EVM_PRIVATE_KEY=0xYOUR_PRIVATE_KEY_HERE

Install: Cursor

Add to .cursor/mcp.json:

{
  "mcpServers": {
    "x402search": {
      "command": "npx",
      "args": ["x402search-mcp@1.0.3"],
      "env": {
        "EVM_PRIVATE_KEY": "0xYOUR_PRIVATE_KEY_HERE"
      }
    }
  }
}

Install: Windsurf

Add to ~/.codeium/windsurf/mcp_config.json:

{
  "mcpServers": {
    "x402search": {
      "command": "npx",
      "args": ["x402search-mcp@1.0.3"],
      "env": {
        "EVM_PRIVATE_KEY": "0xYOUR_PRIVATE_KEY_HERE"
      }
    }
  }
}

Install: Python agents (LangChain, CrewAI, AutoGen, GAME SDK)

pip install x402search-mcp

from x402search import search_x402_apis
results = search_x402_apis(
    query="token price API ethereum",
    private_key="0xYOUR_PRIVATE_KEY_HERE"
)
print(results)

Full docs: https://pypi.org/project/x402search-mcp

Quick Test

EVM_PRIVATE_KEY=0xYOUR_KEY npx x402search-mcp@1.0.3

Tool: search_x402_apis

Parameter Type Required Description
query string yes e.g. "token price API", "DEX swap routing"
network string no e.g. "eip155:8453" for Base mainnet
max_price_usdc number no Filter to APIs at or below this price
limit number no Max results (default 10, max 50)

Virtuals ACP Integration

x402search is available as a native ACP agent on the Virtuals protocol marketplace.

  • Agent ID: 22531
  • Agent profile: https://app.virtuals.io/acp/agent-details/22531
  • Job name: x402search
  • Price: 0.01 USDC per search
  • Accepts crypto, DeFi, and blockchain API discovery queries
  • Rejects off-topic requests automatically at the request phase
  • Returns structured results: endpoint URLs, payment metadata, network, and relevance rank

Links

README copy captured when this server was indexed; it may lag the repository. The original is authoritative.

Questions

About io.github.x402-index/x402search-mcp

How do I install io.github.x402-index/x402search-mcp?

Run claude mcp add io-github-x402-index-x402search-mcp -- npx -y x402search-mcp, then add the server to your MCP client's configuration.

Is io.github.x402-index/x402search-mcp safe to use with an AI agent?

Its trust score is 37 out of 100 (low). It passes 1 of the 1 static security checks run so far. It has no ConduID identity yet, so agent calls to it are not receipted.

Is io.github.x402-index/x402search-mcp still maintained?

The last commit was 6 months ago. That's long enough that you should check whether the maintainer is responding to issues before depending on it.