LangChain
Core workflows
Step-by-step ways to use LangChain for the work it does best.
01
02
← Back to the LangChain collection
Workflow
Build a bounded tool-calling agent with LangChain
Create a small agent whose tools, state, stop conditions, and machine-readable output are explicit.
Workflow
Add approval gates and production controls to a LangChain agent
Pause consequential tool calls for review while preserving resumable state and observable decisions.