BetaReadonly BetacompletedOrdered list of step names that have already completed.
Readonly BetacurrentIndex of the currently executing step (0-based).
Readonly BetaremainingOrdered list of step names yet to execute.
Readonly BetasessionUnique session identifier (UUID recommended).
Readonly BetastateArbitrary serializable step state (JSON-safe).
Readonly BetatimestampISO 8601 timestamp when this checkpoint was created.
Checkpoint state for long-running agentic test generation sessions.
Remarks
Beta — serialization format may change in minor releases.
Serializable to JSON via
JSON.stringify(). The JSON shape is:Persist with
JSON.stringify(checkpoint)and restore withJSON.parse(stored) as AgenticCheckpoint. All fields arereadonly— create a new object to update.The
staterecord must only contain JSON-serializable values (no functions, Dates, or circular references).Intent
Enable resumable multi-step AI test generation workflows.
Example