Recursion limit of xx reached without hitting a stop condition.

[daxiongshu]

Version

1.5.0a20260216

Which installation method(s) does this occur on?

No response

Describe the bug.

When running NAT tool calling agent, I had this error:

Error: Recursion limit of 62 reached without hitting a stop condition. You can increase the limit by setting the `recursion_limit` config key.
For troubleshooting, visit: https://docs.langchain.com/oss/python/langgraph/errors/GRAPH_RECURSION_LIMIT
Trace saved: dabstep_agent/workspace/learning_traces/1681.json

A reproducer and full trace has been shared internally.

Minimum reproducible example

Relevant log output

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Other/Misc.

No response

Code of Conduct

• I agree to follow the NeMo Agent Toolkit Code of Conduct
• I have searched the open bugs and have found no duplicates for this bug report

[willkill07]

A reproducer and full trace has been shared internally.

@daxiongshu I have done a search on slack and found nothing. Please raise in the community channel.

Also, please consider trying a newer nightly release. 1.5.0a20260216 is over two weeks old and we've had plenty of recent bug fixes.

[willkill07]

I was told this can be closed due to the internal work already being done and communicated.