LangChain - LangSmith Observability
Which of the following is the correct way to add a callback for observability in a LangChain LLM chain?
Which of the following is the correct way to add a callback for observability in a LangChain LLM chain?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Recall LangChain callback syntax
LangChain expects a list of callback handlers passed as the 'callbacks' parameter.Step 2: Match correct parameter and value type
chain = LLMChain(llm=llm, prompt=prompt, callbacks=[MyCallbackHandler()]) uses 'callbacks' with a list containing the handler instance, which is correct.Final Answer:
chain = LLMChain(llm=llm, prompt=prompt, callbacks=[MyCallbackHandler()]) -> Option BQuick Check:
Callbacks param = list of handlers [OK]
Quick Trick: Callbacks parameter takes a list of handler instances [OK]
Common Mistakes:
MISTAKES- Using 'callback' instead of 'callbacks'
- Passing a single handler without list brackets
- Using wrong parameter names like 'handlers' or 'observers'
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