Restarting after an interrupt in an async react agent

[SamTov]

My team and I are building a react agent using the langgraph create_react_agent framework. This is being done using async functions and async tools. Some tools have interrupts to allow for validation. However, after moving our methods and stream call over the async, the interrupts do not resume. Is there some kind of documented example of performing interrupts using async methods like astream or perhaps a more complete example of an agent using tools would be very helpful. There are no fails occurring, the tools is just never called again and never resumes. Any information would be helpful.

[pankaj-bora]

In my case, while using interrupt with create_react_agent, it worked when I invoked it the 2nd time without changing the state. Here is the code snippet.

config = {
    "configurable": {
        "thread_id": 1
    }
}
# First call - will pause at the interrupt before tools
response = await graph.ainvoke({
    "messages": [HumanMessage(content="What is the weather in San Francisco?")], 
}, config=config)

# Here you could add human approval logic if needed

# Second call - resume execution to actually run the tools
response = await graph.ainvoke(None, config=config)  # None input resumes from checkpoint