lg-add

You can add human-in-the-loop to a LangGraph agent by invoking a capability extension tool to select the target graph, switch on the HITL capability, and wire a checkpointer for durable state. This enforces a phase-driven approach for safe, auditable workflow interruptions.

The best way to set up cross-thread memory and persistence in LangGraph is by wiring a shared store and checkpointer into your target graph. This enables durable state management and turns agent capabilities into production-ready workflows.

Yes, you can integrate sub-agents and streaming outputs into existing LangGraph workflows. The extension process guides capability switching and generates test scaffolding, ensuring the new streaming and sub-agent features are safely wired into the target graph.

Adding middleware hooks to LangGraph does not require rewiring the entire graph. The process targets production-grade workflows by guiding target graph selection and capability switching, allowing you to layer middleware and custom tools without breaking existing logic.

To test LangGraph agent extensions like custom tools and middleware, the augmentation process generates test scaffolding and concrete file paths. This ensures you can safely land changes in a real repo and validate middleware behavior through clear follow-ups.