action svix_get_message_api_v1_app_app_id_msg_msg_id_get { label: "Get Message" description: "Get a message by its ID or eventID." provider: svix method: GET path: "/api/v1/app/{app_id}/msg/{msg_id}/" encoding: json input: { type: "object" properties: { app_id: { type: "string" description: "The application's ID or UID" } "idempotency-key": { type: "string" description: "The request's idempotency key" } msg_id: { type: "string" description: "The message's ID or eventID" } } required: ["app_id", "msg_id"] additionalProperties: false } output: { type: "object" required: ["eventType", "id", "payload", "timestamp"] properties: { channels: { type: "array" description: "List of free-form identifiers that endpoints can filter by" items: { type: "string" } } eventId: { type: "string" description: "Optional unique identifier for the message" } eventType: { type: "string" } id: { type: "string" } payload: { type: "object" } timestamp: { type: "string" format: "date-time" } } } }