Card snapshot

This is a frozen copy of the agent's agent-card.json as we observed it at the timestamp above. We capture a new snapshot every time the card's content hash changes. Useful for: forensic drift analysis, verifying downstream callers see the right version, reproducing routing decisions made historically.

{
  "name": "URL Metadata API",
  "description": "Given a URL, returns title/description/preview-image/site_name scraped from its OpenGraph and meta tags.",
  "url": "https://url-metadata-api-325572559480.us-central1.run.app",
  "version": "1.0.0",
  "documentationUrl": "https://url-metadata-api-325572559480.us-central1.run.app/docs",
  "provider": {
    "organization": "nexus-mcp-infra",
    "url": "https://github.com/nexus-mcp-infra"
  },
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "additionalInterfaces": [
    {
      "url": "https://url-metadata-api-325572559480.us-central1.run.app/mcp",
      "transport": "MCP"
    }
  ],
  "skills": [
    {
      "id": "nexus_url_metadata_api_extract_url_metadata",
      "name": "Extract URL Metadata",
      "description": "Fetch a URL and return its title, description, preview image, and site name from OpenGraph/meta tags.",
      "tags": [
        "url",
        "metadata",
        "link-preview",
        "opengraph"
      ]
    }
  ],
  "metadata": {
    "protocol_note": "This service implements the Model Context Protocol (MCP) at /mcp, not A2A's own task methods. POST /extract is charged $0.01 via x402 (Base Sepolia TESTNET, not real funds); the MCP tool is currently free -- see README. Payment settles BEFORE extraction is attempted: a call that fails (400 unresolvable/private URL, 422 non-HTML or too many redirects, 502/504 upstream error) is still charged, same as a 200."
  }
}