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:

import { StateGraph, StateSchema } from "@langchain/langgraph";
import { z } from "zod/v4";

const State = new StateSchema({
  someKey: z.string(),
});

const builder = new StateGraph(State)
  .addNode("a", ...)
  .addNode("b", ...)
  .addEdge("a", "b")
  .addEdge("b", "a")
  ...

const 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 recursionLimit value into your config object when invoking your graph like this:

await graph.invoke({...}, { recursionLimit: 1000 });