Building Human-In-The-Loop Agentic Workflows

A practical guide to implementing human-in-the-loop (HITL) agentic workflows using LangGraph. Covers the core mechanics of interrupts and checkpointing, with a concrete example: a social media content generation pipeline that posts to Bluesky. Explains how to place interrupts at both node and tool levels, manage state persistence with SQLite checkpointers, use thread IDs to resume paused workflows, and shares best practices for avoiding common interrupt pitfalls like non-deterministic re-execution.