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Card snapshot

postbye.com · 2026-11-14 01:15:32 UTC · c2f78bea4df18c81a5647525309677f55b1384eef7bbdb2d08e08b5dd279a392

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": "Postbye",
  "url": "https://postbye.com/a2a",
  "description": "Postbye cancels subscriptions for you by mail.",
  "version": "1.0.0",
  "documentationUrl": "https://postbye.com/mcp-server",
  "iconUrl": null,
  "defaultInputModes": [
    "text/plain"
  ],
  "defaultOutputModes": [
    "text/plain",
    "application/json"
  ],
  "skills": [
    {
      "id": "company-lookup",
      "name": "Company cancellation lookup",
      "description": "Send message/send with a company name or slug as text (up to 500 characters). The reply is one message: a text summary of how the company takes cancellations, whether the facts were checked by hand and whether Postbye can mail a cancellation letter to it, plus a data part with the same public record. With no match it lists up to five close guides. Letter text and mailing addresses are in the MCP endpoint.",
      "tags": [
        "subscriptions",
        "cancellation",
        "lookup",
        "read-only"
      ],
      "examples": [
        "How do I cancel Netflix?",
        "Does Planet Fitness accept cancellation by letter?",
        "netflix"
      ],
      "inputModes": [
        "text/plain"
      ],
      "outputModes": [
        "text/plain",
        "application/json"
      ]
    }
  ],
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false,
    "extensions": null
  },
  "protocolVersion": "0.3.0",
  "provider": {
    "organization": "Postbye",
    "url": "https://postbye.com/"
  }
}