Add a dataset item

POST 
/v1/projects/:project_id/datasets/:dataset_id/items

Adds one test case. input is replayed verbatim as the generation's messages, so it must be a non-empty array of { role, content }.

Request

Responses

201

Dataset item created successfully

400

Bad request (input is not message-shaped)

401

Unauthorized

403

Forbidden

404

Dataset not found

409

The project's storage_bytes quota is exceeded (QUOTA_STORAGE_EXCEEDED). A fixture is a corpus write like a document, so it is bounded by the same cap; delete stored content or raise the quota — no Retry-After is sent, since no window reset clears a stored total.