Get message
Threads
Get message
Get a message by ID.
GET
Get message
Retrieve a single message by ID. For assistant messages where file search was used, the content includes source tracing fields per retrieved chunk:
chunk_id, page, lines, and section. Use chunk_id to call the chunk endpoint for full Markdown provenance and the file_id of the source document.Authorizations
Your Seekr API key, sent in the Authorization header with no 'Bearer' prefix.
Headers
Response
Successful Response
Thread message shape returned by the thread API.
parts are opt-in so existing clients keep the previous response shape by default.
parts
(MessageTextPart · object | MessageReasoningPart · object | MessageFilePart · object | MessageDataPart · object | MessageToolCallPart · object | MessageToolErrorPart · object | MessageToolResultPart · object)[] | null
A text part persisted alongside a thread message.
- MessageTextPart
- MessageReasoningPart
- MessageFilePart
- MessageDataPart
- MessageToolCallPart
- MessageToolErrorPart
- MessageToolResultPart
Last modified on June 30, 2026