How to make langgraph stop in the middle of the steps and get inputs from user??

[kvssankar]

How to make langgraph stop in the middle of the steps and get input from user?? Is it possible to do that?

[NguyenDrasp]

Have you figured out how? I have the same question, I believe it is possible by using "human in the loop":
https://github.com/langchain-ai/langgraph/blob/main/examples/human-in-the-loop.ipynb.

[tevslin]

I just finished a streamlit-langgchain app with human-ai interaction at various points in the graph. Mating the two state machines is tricky but doable. The code ihere and the streamlit app can be run from the streamlit cloud here.

streamlit makes this more complicated so you may just want to look at the mm_agent.py module which has the graph and the triggers for interaction in it.

[hinthornw]

Yupp typically you use interrupt_{before|after}

Examples:

• https://langchain-ai.github.io/langgraph/tutorials/introduction/#part-4-human-in-the-loop
• https://langchain-ai.github.io/langgraph/tutorials/customer-support/customer-support/#part-3-conditional-interrupt