Interface Checkpoint

A saved snapshot of progress at a meaningful moment in the session.

Checkpoints allow the session to be resumed or analysed after the fact.

interface Checkpoint {
    id: string;
    label: string;
    metadata: Record<string, unknown>;
    sessionId: SessionId;
    timestamp: number;
}

Properties

id: string

Unique checkpoint identifier (UUID v4).

label: string

Human-readable label, e.g. "Completed exercise 3".

metadata: Record<string, unknown>

Arbitrary key-value metadata captured at checkpoint time.

sessionId: SessionId

The session this checkpoint belongs to.

timestamp: number

Unix timestamp (ms) when the checkpoint was saved.