Optional ReadonlycompletedTimestamp when step completed (if completed)
ReadonlycreatedTimestamp when step was created
ReadonlydataStep-specific data (command line, file path, etc.)
ReadonlyidUnique step identifier
ReadonlyindexStep index within the trajectory
ReadonlymetadataInternal metadata not shown in UI
ReadonlystatusCurrent status
ReadonlysummaryHuman-readable summary of what this step does
ReadonlytypeType of tool call
A single step (tool call) in a Cascade trajectory.