{
  "conversations": [
    {
      "partnerSteamId": "76561198044443322",
      "lastMessageAt": "2026-06-29T11:52:00Z",
      "lastMessagePreview": "Hi, your item has been sent!",
      "unreadCount": 2
    }
  ],
  "nextCursor": "eyJ0cyI6IjIwMjYtMDYtMjkifQ=="
}

{
  "code": "invalid_argument",
  "message": "The request was malformed, such as a missing required field or an unparseable cursor."
}

{
  "code": "unauthenticated",
  "message": "The request lacks a valid API key in the Authorization header."
}

{
  "code": "permission_denied",
  "message": "The API key is not allowed to perform this action on this workspace."
}

{
  "code": "resource_exhausted",
  "message": "The request was rate limited. Slow down and retry later."
}

{
  "code": "internal",
  "message": "An internal server error occurred."
}