x402 endpoint checker

Connect Remote server

claude mcp add --transport http x402-checker https://x402-seller-kit.soloearn.workers.dev/mcp

{
  "mcpServers": {
    "x402-checker": {
      "url": "https://x402-seller-kit.soloearn.workers.dev/mcp"
    }
  }
}

{
  "servers": {
    "x402-checker": {
      "type": "http",
      "url": "https://x402-seller-kit.soloearn.workers.dev/mcp"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://x402-seller-kit.soloearn.workers.dev/mcp

Tools 1 found in our last check

• check_x402_endpoint

  Fetch a paid URL without paying and grade its x402 402 challenge: status, PAYMENT-REQUIRED header, version, network, USDC asset, amount units, payTo checksum, EIP-712 domain, CORS, HEAD parity and discovery metadata. Read-only; never signs or pays.

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