Start and stream
Start a task from a prompt and stream live server-sent events for the current turn.
Authorizations
Use Authorization: Bearer YOUR_AUTUMN_API_KEY.
Body
Natural-language task for Autumn.
"Find 10 Series A AI security companies"
Optional single output hint. Include id, kind, path, name, and, for research outputs, schema, schema_order, and target_count.
If true, the agent may ask one blocking planning question before execution. Defaults to false for public API starts.
Optional task-local input filenames or storage paths already available to Autumn.
Optional caller metadata.
Model tier for the task. ranger (default) is the most capable model with the deepest reasoning; scout is faster on a tuned harness. Set at start only and fixed for the life of the task.
ranger, scout "scout"
Response
SSE stream of task, tool, text, error, and done events.
The response is of type string.