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