·LangChain
Module 12 Lesson 1: Introduction to Callbacks
Listening to the Chain. How to use the Callback system to intercept events like 'LLM Start' or 'Tool End' for logging and UI updates.
callbacks
3 articles
·LangChain
Module 12 Lesson 2: Implementing Callbacks in Chains
Connecting the Hearths. How to pass your custom handlers to models, tools, and executors to start capturing events.
·LangChain
Module 12 Wrap-up: Inspecting the Machine
Hands-on: Build a Cost-Monitoring Callback that calculates and prints the price of every AI request.