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TOPIC OVERVIEW

langchain/Middleware

Add controlled logic around your agent so you can inspect, modify, or control what happens during execution.

12 QuestionsAdvancedMedium Priority ~9 min read

Middleware gives you a place to add custom behavior around an agent's execution. Instead of putting every rule directly into the agent or tool, middleware can intercept parts of the workflow and perform tasks such as logging, validation, filtering, retries, or custom control logic.

This becomes especially useful in production systems where you need more control than a simple agent loop provides. Middleware can help keep cross-cutting behavior separate from the core business logic.

What you'll walk away knowing

What middleware does in an agent workflow
How middleware can inspect and modify execution
How to add validation, logging, and control logic
Why middleware helps keep production agents maintainable
1What are middlewares in langchain?Intermediate
All Topics
1
Basics
Models
Messages
2
Agents
Tools
Middleware
Memory
3
MCP
Multi Agents
Human in the loop
4
RAG
Context Engineering
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