Aggregator MCP Server

X402 Discovery MCP

Name: X402 Discovery MCP
Author: rplryan

Runtime discovery layer for x402-payable APIs. Agents discover and route to pay-per-call x402 endpoints by capability, get quality-ranked results with trust scores (0-100), and pay per query via x402. Includes MCP server, Python SDK, and CLI (npm install -g x402scout).

Scan found nothing by rplryan1MITPythonIntermediatestdiosse

View on GitHub Install Guide

Install

Claude Code

claude mcp add x402-discovery-mcp -- uvx x402-discovery-mcp

Cursor

{
  "mcpServers": {
    "x402-discovery-mcp": {
      "command": "uvx",
      "args": [
        "x402-discovery-mcp"
      ]
    }
  }
}

VS Code

{
  "mcp": {
    "servers": {
      "x402-discovery-mcp": {
        "command": "uvx",
        "args": [
          "x402-discovery-mcp"
        ]
      }
    }
  }
}

Windsurf

{
  "mcpServers": {
    "x402-discovery-mcp": {
      "command": "uvx",
      "args": [
        "x402-discovery-mcp"
      ]
    }
  }
}

Claude Desktop

{
  "mcpServers": {
    "x402-discovery-mcp": {
      "command": "uvx",
      "args": [
        "x402-discovery-mcp"
      ]
    }
  }
}

Remote Endpoint Available

This server offers a hosted endpoint — no local installation required.

https://x402-scout-relay.onrender.com/sse

Safety Report

67% Scan found nothing

Scanned 5 months ago

4 passed 2 warnings

Security

Authentication

details

Weak auth signals: auth_header

Warning

CORS Policy

details

No CORS-relevant transport detected (likely stdio)

N/A

Rate Limiting

details

No rate limiting mechanism detected

Info

Known CVEs

details

No known CVEs in dependencies

Pass

Code Quality

Dependency Audit

details

No known vulnerable dependencies detected

Pass

Dangerous Patterns

details

No dangerous code patterns detected

Pass

License

details

License: MIT

Pass

Community

Maintenance Status

details

Last commit 5 months ago

Warning

Learn about our security methodology →

Compatibility

Claude CodeFull support

Tested

CursorFull support

Tested

VS CodeFull support via Copilot

Tested

WindsurfFull support

Tested

Claude DesktopFull support

Tested

Frequently Asked Questions

What is X402 Discovery MCP?

Is X402 Discovery MCP safe to use?

We cannot tell you that, and nobody scanning at this scale can. What we did in March 2026 was shallow-clone X402 Discovery MCP and run five keyword searches over its source: auth identifiers, CORS configuration, rate-limit identifiers, the dependency manifest against a hardcoded list of 18 known-vulnerable packages, and unguarded eval/exec calls. None of them matched. A text search cannot follow a variable, judge intent, or tell you what a server does once it is running, so "nothing matched" is not "safe". What the scan does and does not cover is written out at /mcp/security.

What are alternatives to X402 Discovery MCP?

Similar MCP servers include Metatool App, PaperBanana, MCPJungle. Each serves a similar purpose but may differ in features, language, and compatibility.