Tool Calling not exiting with Ollama models

[SBrewer15]

I have a chat using Ollama models where when I add a simple tools it gets stuck in the tool loop. It reaches the max_steps, is told to summarize findings then returns the tool call one last time. I have tried it with 'qwen3-coder:30b', 'nemotron-3-nano:latest' and 'llama3.1:8b'

https://github.com/SBrewer15/CellMate/blob/main/nb_testing/03_test-toolUse.ipynb

[SBrewer15]

lisette==0.0.40
litellm==1.81.16

[SBrewer15]

This is a minimal example showing the issue: https://github.com/SBrewer15/CellMate/blob/main/nb_testing/Lisette-tool-test.ipynb

Ollama models are passing the correct info to the tool, the tool loop executes but the model is not receiving the content from the tool. The last example shows it is working with Anthropic

[SBrewer15]

This is my patch to interrupt the summary step by removing the tool_schema and setting tool_choice to None then restore them.

_orig_call = Chat._call
@patch
def _call(self:Chat, msg=None, prefill=None, temp=None, think=None, search=None, stream=False,
        max_steps=2, step=1, final_prompt=None, tool_choice=None, max_tokens=None, **kwargs):
    "Internal method that always yields responses"
    _orig_tools = self.tool_schemas
    if tool_choice == 'none': self.tool_schemas, tool_choice = None, None
    try: yield from _orig_call(self, msg, prefill, temp, think, search, stream, max_steps, step, final_prompt, tool_choice, max_tokens, **kwargs)
    finally: self.tool_schemas = _orig_tools