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x402search-mcp

x402-index/x402search-mcp

1 starsv1.0.2STDIORegistry activeUpdated 2026-03-29Community

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Works with

Claude CodeClaude DesktopCursorVS CodeClineCodex CLIOpenClaw+ any MCP client

Install to Claude Code

claude mcp add x402search -- npx -y x402search-mcp

Summary

x402-index/x402search-mcp MCP server](https://glama.ai/mcp/servers/x402-index/x402search-mcp/badges/score.svg)](https://glama.ai/mcp/servers/x402-index/x402search-mcp) 📇 ☁️ 🍎 🪟 🐧 - Search 14,000+ x402-enabled HTTP APIs by keyword.

Connect from your MCP client

One-click install

Add this server to your editor with a single click. Fill in any required credentials afterward.

Install in Cursor Install in VS Code

Claude Code

Run this once and Claude Code registers the server for you:

claude mcp add x402search -- npx -y x402search-mcp

Claude Desktop

Add this to claude_desktop_config.json under Settings → Developer → Edit Config:

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

Cursor

Add this to .cursor/mcp.json in your project (or ~/.cursor/mcp.json for all projects):

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

Cline and other MCP clients

Most MCP clients accept the standard mcpServers JSON block:

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

Codex CLI

codex mcp add x402search --env PRIVATE_KEY=<PRIVATE_KEY> -- npx -y x402search-mcp

# or add to ~/.codex/config.toml:
[mcp_servers.x402search]
command = "npx"
args = ["-y", "x402search-mcp"]
[mcp_servers.x402search.env]
PRIVATE_KEY = "<PRIVATE_KEY>"

OpenClaw

OpenClaw reads MCP servers from the mcp.servers section of ~/.openclaw/openclaw.json (managed via `openclaw mcp add` or the mcporter skill):

{
  "mcp": {
    "servers": {
      "x402search": {
        "command": "npx",
        "args": [
          "-y",
          "x402search-mcp"
        ],
        "env": {
          "PRIVATE_KEY": "<PRIVATE_KEY>"
        }
      }
    }
  }
}

Replace the <PLACEHOLDER> values with your own credentials — see the configuration table below.

Configuration

x402search-mcp reads the following environment variable:

Variable	Required
PRIVATE_KEY	Required

README.md

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

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

---

Install: Claude Desktop

Add to your claude_desktop_config.json: ``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: ``bash export EVM_PRIVATE_KEY=0xYOUR_PRIVATE_KEY_HERE ``

---

Install: Cursor

Add to .cursor/mcp.json: ``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: ``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

---

Score

0–100

53/ 100

Grade

Popularity3/25

1 GitHub stars — minimal adoption so far.

Maintenance14/20

Updated within the last 6 months.

Completeness15/20

Documented: one-line install, description, config details, tags. Missing: license.

Trust9/15

Listed and active in the MCP registry.

Security12/20

No declared license. Tool surface not yet analyzed.

Scored automatically from popularity, maintenance, completeness, trust, and security. How we score →

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