langchain-ai/langgraph
1
0
Fork 0
mirror of https://github.com/langchain-ai/langgraph.git synced 2026-07-15 12:35:43 -04:00
Code Issues 314 Packages Projects Releases 17 Wiki Activity

[PR #6545] fix(langgraph): replace deprecated create_react_agent with create_agent #5110

New Issue
Closed
opened 2026-02-20 17:51:14 -05:00 by yindo · 0 comments
yindo commented 2026-02-20 17:51:14 -05:00
Owner
Copy Link
Copy Source

Original Pull Request: https://github.com/langchain-ai/langgraph/pull/6545

State: closed
Merged: No

Description:

This PR updates the import and usage of the deprecated create_react_agent function. The function has been moved to langchain.agents as create_agent.

Changes:

  • Updated import:
# Old
from langchain.chains import create_react_agent  

# New
from langchain.agents import create_agent

  • Updated agent creation calls to match the new create_agent signature, including:

    • system_prompt instead of prompt

    • middleware instead of pre_model_hook/post_model_hook

  • Removed deprecation warnings and ensured compatibility with the latest LangChain release.

Example conversion:

# Old
from langgraph.prebuilt import create_react_agent
graph = create_react_agent(model, tools, prompt="You are a helpful assistant")

# New
from langchain.agents import create_agent
graph = create_agent(model, tools, system_prompt="You are a helpful assistan

Reason:

create_react_agent is deprecated in the latest LangChain release. Updating the import ensures compatibility with future versions and avoids runtime warnings.

Issue:

N/A (no linked issue)

Dependencies:

No new dependencies added. No changes to pyproject.toml or optional packages.

Lint and test:

All checks passed locally with:

  • make format
  • make lint
  • make test
**Original Pull Request:** https://github.com/langchain-ai/langgraph/pull/6545 **State:** closed **Merged:** No --- ## Description: This PR updates the import and usage of the deprecated `create_react_agent` function. The function has been moved to `langchain.agents` as `create_agent`. ### Changes: - Updated import: ```python # Old from langchain.chains import create_react_agent # New from langchain.agents import create_agent ``` * Updated agent creation calls to match the new `create_agent` signature, including: * `system_prompt` instead of `prompt` * `middleware` instead of `pre_model_hook`/`post_model_hook` * Removed deprecation warnings and ensured compatibility with the latest LangChain release. ### Example conversion: ```python # Old from langgraph.prebuilt import create_react_agent graph = create_react_agent(model, tools, prompt="You are a helpful assistant") # New from langchain.agents import create_agent graph = create_agent(model, tools, system_prompt="You are a helpful assistan ``` ### Reason: `create_react_agent` is deprecated in the latest LangChain release. Updating the import ensures compatibility with future versions and avoids runtime warnings. ### Issue: N/A (no linked issue) ### Dependencies: No new dependencies added. No changes to pyproject.toml or optional packages. ### Lint and test: All checks passed locally with: - make format - make lint - make test
yindo added the pull-request label 2026-02-20 17:51:14 -05:00
yindo closed this issue 2026-02-20 17:51:14 -05:00
Sign in to join this conversation.
No Branch/Tag Specified
Branches Tags
Labels
Clear labels
agents
awaiting author revision
bug
change
chat models
checkpointer
ci
code quality
code quality
dependencies
documentation
drawing
duplicate
enhancement
good first issue
help wanted
invalid
maintainer
meta
missing information
not maintained by langchain
open-swe-auto
open-swe-max
open-swe-max-auto
pending
performance
pull-request
Mirrored from GitHub Pull Request
 question
requires design
sdk
server
stale
studio
tests
type checking
usage question
v0.5
v1.1
No Label pull-request
Milestone
No items
No Milestone
Projects
Clear projects
No project
Assignees
Clear assignees
yindo
No Assignees
1 Participants
Notifications
Due Date
No due date set.
Dependencies

No dependencies set.

Reference: langchain-ai/langgraph#5110
Delete Branch "%!s()"

Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?