Agent Session Replay

via “session management with event-based state persistence and resumability”

Google's agent framework — tool use, multi-agent orchestration, Google service integrations.

Unique: Implements event-sourced session management where all agent execution events are persisted to database, enabling both resumability (continue from last checkpoint) and rewind (replay from specific point). Includes event compaction to reduce storage and hierarchical state tracking for multi-agent scenarios.

vs others: More sophisticated than simple checkpoint saving — event sourcing enables replay and rewind capabilities, whereas most frameworks only support resume-from-last-checkpoint. Hierarchical state tracking supports multi-agent scenarios better than flat session models.