POSTFACT — Resolve Ambiguous Side Effects Before Retry

Connect Remote server

claude mcp add --transport http postfact https://postfact-api-production.up.railway.app/mcp

{
  "mcpServers": {
    "postfact": {
      "url": "https://postfact-api-production.up.railway.app/mcp"
    }
  }
}

{
  "servers": {
    "postfact": {
      "type": "http",
      "url": "https://postfact-api-production.up.railway.app/mcp"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://postfact-api-production.up.railway.app/mcp

Tools 1 found in our last check

• resolve_outcome

  Call after a side-effecting API/tool action fails ambiguously and before retrying. POSTFACT returns DONE only with affirmative completion evidence, NOT_DONE only with affirmative non-execution evidence, otherwise UNKNOWN. UNKNOWN is the safe default.

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