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[PR #6492] docs: update main README React agent example for LangGraph #5071

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opened 2026-02-20 17:51:11 -05:00 by yindo · 0 comments
yindo commented 2026-02-20 17:51:11 -05:00
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Original Pull Request: https://github.com/langchain-ai/langgraph/pull/6492

State: closed
Merged: No

The langgraph.prebuilt.create_react_agent import and its prompt= argument were officially deprecated in LangGraph(November 2025). The recommended and maintained path forward is now langchain.agents.create_agent.

This PR updates the primary quickstart example in the README to:

  • Use from langchain.agents import create_agent
  • Replace deprecated prompt= with correct system_prompt=

The example remains functionally identical (still prints "It's always sunny in sf!") but now reflects current best practices and works out-of-the-box with the latest versions of langchain and langgraph.

**Original Pull Request:** https://github.com/langchain-ai/langgraph/pull/6492 **State:** closed **Merged:** No --- The `langgraph.prebuilt.create_react_agent` import and its `prompt=` argument were officially deprecated in LangGraph(November 2025). The recommended and maintained path forward is now `langchain.agents.create_agent`. This PR updates the primary quickstart example in the README to: - Use `from langchain.agents import create_agent` - Replace deprecated `prompt=` with correct `system_prompt=` The example remains functionally identical (still prints "It's always sunny in sf!") but now reflects current best practices and works out-of-the-box with the latest versions of `langchain` and `langgraph`.
yindo added the pull-request label 2026-02-20 17:51:11 -05:00
yindo closed this issue 2026-02-20 17:51:11 -05:00
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Reference: langchain-ai/langgraph#5071
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