x402 Pay — USDC API Payment Helper

Negotiated protocol versionSource: Squatch observed

2026-07-28

Declared protocol versionsSource: Official MCP Registry

Not declared

Transports

streamable-http

{
  "name": "x402-pay",
  "title": null,
  "version": "1.0.2"
}

Extensions

No protocol extensions observed.

Summary

{
  "type": "none",
  "challengeStatus": null,
  "scopesSupported": [],
  "resourceMetadataUrl": null,
  "authorizationServers": []
}

Checks

{
  "checks": [
    {
      "check": "tools_list_deterministic",
      "passed": true
    },
    {
      "check": "list_methods_succeed",
      "detail": "resources/templates/list returned JSON-RPC error -32601 \"Method not found\"",
      "passed": false
    },
    {
      "check": "list_results_schema_valid",
      "detail": "tools/list page 1: INVALID_RESULT; resources/list page 1: INVALID_RESULT; prompts/list page 1: INVALID_RESULT",
      "passed": false
    },
    {
      "check": "pagination_terminates",
      "passed": true
    },
    {
      "check": "tool_names_valid",
      "passed": true
    },
    {
      "check": "tool_names_unique",
      "passed": true
    },
    {
      "check": "no_network_schema_refs",
      "passed": true
    },
    {
      "check": "x_mcp_header_valid",
      "passed": true
    },
    {
      "check": "icon_urls_https_or_data",
      "detail": "no icons declared",
      "passed": true
    },
    {
      "check": "discover_present",
      "passed": true
    },
    {
      "check": "result_type_present",
      "detail": "3 of 4 result(s) without resultType",
      "passed": false
    },
    {
      "check": "cacheable_fields_present",
      "detail": "3 of 4 cacheable result(s) without valid ttlMs/cacheScope",
      "passed": false
    },
    {
      "check": "server_info_in_meta",
      "detail": "3 of 4 result(s) without _meta serverInfo",
      "passed": false
    },
    {
      "check": "no_session_id",
      "passed": true
    },
    {
      "check": "unknown_method_404",
      "detail": "HTTP 400, JSON-RPC code -32601",
      "passed": false
    },
    {
      "check": "notification_202",
      "detail": "HTTP 204",
      "passed": false
    },
    {
      "check": "get_405",
      "detail": "GET answered HTTP 200",
      "passed": false
    }
  ],
  "toolsListNondeterministic": false
}

Summary

{
  "era": "modern",
  "extensions": [],
  "serverInfo": {
    "name": "x402-pay",
    "title": null,
    "version": "1.0.2"
  },
  "transportType": "streamable-http",
  "negotiatedVersion": "2026-07-28",
  "supportedVersions": [
    "2026-07-28",
    "2025-11-25",
    "2025-06-18"
  ],
  "instructionsPresent": true,
  "declaredTransportMismatch": false
}

Summary

{
  "ok": true,
  "issuer": "CN=WE1, O=Google Trust Services, C=US",
  "validTo": "2026-12-20T23:04:28.000Z",
  "protocol": "TLSv1.3"
}

Scan metadata

Scan id

03d7532d-6900-4dee-8022-ad8fe2702ed0

Status

completed

Trigger

scheduled

Started

Nov 15, 2026, 01:01 UTC

Completed

Nov 15, 2026, 01:01 UTC

Scanner version

1.0.0

Snapshot fingerprint

6de4d9f7eb87ec3f26ea993c9b9c3a529ff7effddac26b7df9a1fcb7085821d0