langgraph/docs/docs/troubleshooting/errors/GRAPH_RECURSION_LIMIT.md

GRAPH_RECURSION_LIMIT

Your LangGraph StateGraph reached the maximum number of steps before hitting a stop condition. This is often due to an infinite loop caused by code like the example below:

class State(TypedDict):
    some_key: str

builder = StateGraph(State)
builder.add_node("a", ...)
builder.add_node("b", ...)
builder.add_edge("a", "b")
builder.add_edge("b", "a")
...

graph = builder.compile()

However, complex graphs may hit the default limit naturally.

Troubleshooting

• If you are not expecting your graph to go through many iterations, you likely have a cycle. Check your logic for infinite loops.
• If you have a complex graph, you can pass in a higher recursion_limit value into your config object when invoking your graph like this:

graph.invoke({...}, {"recursion_limit": 100})