feat(prebuilt): add text_mode option to create_react_agent#6747
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archit0 wants to merge 2 commits intolangchain-ai:mainfrom
Open
feat(prebuilt): add text_mode option to create_react_agent#6747archit0 wants to merge 2 commits intolangchain-ai:mainfrom
archit0 wants to merge 2 commits intolangchain-ai:mainfrom
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Add a `text_mode` parameter to `create_react_agent` that enables
text-based tool calling instead of native tool binding. This is useful
for models that don't support native tool/function calling APIs.
When `text_mode=True`:
- Tool descriptions are added to the prompt instead of binding tools
- Model responses are parsed for "Action:" and "Action Input:" patterns
- Parsed actions are converted to tool_calls format for execution
This enables models like Perplexity Sonar, older OpenAI models, or
other LLMs without tool calling support to work with the ReAct agent.
Example usage:
```python
from langgraph.prebuilt import create_react_agent
agent = create_react_agent(
model=my_llm_without_tool_support,
tools=[my_tool],
text_mode=True, # Enable text-based tool calling
)
```
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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