Interrupt on a specific tool when using Langgraph ReAct Agent

[nathan-vo810]

I have been looking into Human In the Loop for Langgraph React Agent here: https://langchain-ai.github.io/langgraph/how-tos/create-react-agent-hitl/

In the tutorial, the graph is interrupted at every tool call.

graph = create_react_agent(model, tools=tools, interrupt_before=["tools"], checkpointer=memory)

However, I don't want it to stop at every single tool call but instead stop at a specific tool such as AskHuman like in this tutorial: https://langchain-ai.github.io/langgraph/how-tos/human_in_the_loop/wait-user-input/

I cannot use the chain with tools as for my usecase it is required to have an agent. So, how can I have my langgraph agent only stop on a specific tool?

Thank you in advance.

[hinthornw]

For that, I'd make my own graph, have two tool nodes - one where I'd have an interrupt and the other I wouldn't.

We demonstrate this in the customer support tutorial

[Michael-YongWang]

If multi tools are called at the same time, how to use multi tool nodes to separately make the function call in parallel? Could you please show an example?