Create a multi-step chain that runs on a single reserved session/machine.
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.
Request to create and run a multi-step chain on a single reserved session/machine
1Shared sensitive inputs (supports nested objects) for all steps
Pool IDs to filter available machines when starting a new session. Machine must belong to ALL of these pools (intersection). Ignored when machine_id is provided.