Update a testset
Partially update testset metadata such as the name, description, starred state, or column definitions.
Use your Respan API key for Respan API authentication. Enter only the Respan API key value; clients send Authorization: Bearer <RESPAN_API_KEY>. For /api/responses, OpenAI or Azure OpenAI provider credentials go in Settings -> Providers or the request body credential_override field, not in this auth field.
The testset ID returned as id by the API.