Stateful Execution Graphs & Automated Checkpoint Hibernation

v2.1.0

Serializable agent state trees backed by PostgreSQL/pgvector. Pause multi-hour workflows during human-in-the-loop validation with zero idle compute costs.

Durable Execution Primitives for Autonomous Agents

Long-running agent workflows should never fail due to unexpected network disconnections or prolonged human-in-the-loop validation delays. Zyphra v2.1.0 brings fully serializable execution DAGs with native hibernation.

State Management Primitives

• Deep state serialization capturing variable environments, tool call buffers, and pending approval queues.

• PostgreSQL and pgvector state backends enabling zero-compute hibernation during asynchronous validation pauses.

• One-click replay engine to debug and fast-forward agent trajectories in staging environments.

Migration Guide

Existing in-memory DAGs can be migrated without breaking changes by adding the `@stateful` decorator to agent step definitions.

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