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POST
Start Workflow
Validates that a headless session created via Create Workflow Session is still runnable, then returns its execution state. This is a validate-only call — it doesn’t execute any step or otherwise mutate session state — used by SDK runners to confirm a session before beginning to submit steps.
You don’t need to call this endpoint before submitting steps — it’s a convenience check. Submit Workflow Step performs the same validity checks itself.

Request

Headers

Path parameters

Example request

Response

200 — Success

Returns the same execution-state envelope as Get Workflow Statesession_id, status, session_progress, steps, current_step, attempts_remaining.

Error responses