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mcp/harbor

Claude Desktop mcp verify_payto

How to: Claude Desktop mcp verify_payto

client:Claude Desktop transport:streamable-http tool:verify_payto

Add mcp to Claude Desktop

  1. 01

    Open ~/Library/Application Support/Claude/claude_desktop_config.json and merge this in. Keep any servers already there. 

{
  "mcpServers": {
    "mcp": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://x402check.dev/mcp"
      ]
    }
  }
}
  1. 02

    Save the file and restart Claude Desktop.

  2. 03

    Ask for something verify_payto does. Claude Desktop lists the server's tools on connect and calls verify_payto itself — you do not invoke it by name.

  3. 04

    If nothing happens, check the server is running and that mcp's identifier in your config matches the one above exactly.

Claude Desktop has no remote transport in its config file, so this bridges through mcp-remote. Restart the app after saving. Claude Desktop docs

Set these first

mcp will not start until these are set, so verify_payto never becomes available.

  • X402CHECK_URL

Same tool, other clients

This list was read from the server itself, by connecting to it and calling tools/list on 11 November 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.

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