{
  "name": "com.postbye/postbye",
  "title": "Postbye",
  "version": "1.2.0",
  "description": "Cancel subscriptions: real cancellation letters & addresses for 10,000+ companies.",
  "website": "https://postbye.com",
  "docs": "https://postbye.com/mcp-server",
  "endpoint": "https://postbye.com/mcp",
  "transport": "streamable-http",
  "supportedProtocolVersions": [
    "2026-07-28",
    "2025-11-25",
    "2025-06-18",
    "2025-03-26",
    "2024-11-05"
  ],
  "auth": "none",
  "tools": [
    {
      "name": "search_companies",
      "title": "Search cancellation guides",
      "description": "Find companies by name (for example \"netflix\" or \"planet fitness\") among the subscriptions and memberships Postbye has a cancellation guide for. Returns each match's slug, category, how the company takes cancellations and the guide URL. Use the slug with get_cancellation_guide."
    },
    {
      "name": "get_cancellation_guide",
      "title": "Get a cancellation guide",
      "description": "How to cancel one company's subscription or membership: how it takes cancellations, the notice period, the traps to check first, billing-partner notes, sources, when the facts were verified, the mailing address(es) on file and the guide and address page URLs. Accepts a company slug from search_companies (merged duplicate slugs resolve to the current one)."
    },
    {
      "name": "get_cancellation_letter",
      "title": "Get a cancellation letter",
      "description": "A plain-text cancellation letter for one company, built from the same template as Postbye's free letter tool, plus where to send it. Fields not supplied stay as [bracketed placeholders] to fill in. Nothing is stored."
    },
    {
      "name": "list_categories",
      "title": "List guide categories",
      "description": "The category hubs of the cancellation guides (streaming, gyms, phone and internet, insurance and more) with the number of guides in each and the hub URL."
    }
  ]
}