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fix: replace create_react_agent with create_agent in examples #303

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fix: replace create_react_agent with create_agent in examples #303

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332dba6
fix: replace `create_react_agent` with `create_agent` in examples
mdrxy Sep 5, 2025
14f8e82
fix: update import statements to use `create_agent` from `langchain.a…
mdrxy Sep 5, 2025
a182107
Merge branch 'main' into mdrxy/rfc
sydney-runkle Sep 30, 2025
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24 changes: 12 additions & 12 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -60,7 +60,7 @@ from mcp import ClientSession, StdioServerParameters
from mcp.client.stdio import stdio_client

from langchain_mcp_adapters.tools import load_mcp_tools
from langgraph.prebuilt import create_react_agent
from langchain.agents import create_agent

server_params = StdioServerParameters(
command="python",
Expand All @@ -77,7 +77,7 @@ async with stdio_client(server_params) as (read, write):
tools = await load_mcp_tools(session)

# Create and run the agent
agent = create_react_agent("openai:gpt-4.1", tools)
agent = create_agent("openai:gpt-4.1", tools)
agent_response = await agent.ainvoke({"messages": "what's (3 + 5) x 12?"})
```

Expand Down Expand Up @@ -114,7 +114,7 @@ python weather_server.py

```python
from langchain_mcp_adapters.client import MultiServerMCPClient
from langgraph.prebuilt import create_react_agent
from langchain.agents import create_agent

client = MultiServerMCPClient(
{
Expand All @@ -132,7 +132,7 @@ client = MultiServerMCPClient(
}
)
tools = await client.get_tools()
agent = create_react_agent("openai:gpt-4.1", tools)
agent = create_agent("openai:gpt-4.1", tools)
math_response = await agent.ainvoke({"messages": "what's (3 + 5) x 12?"})
weather_response = await agent.ainvoke({"messages": "what is the weather in nyc?"})
```
Expand Down Expand Up @@ -169,7 +169,7 @@ To use it with Python MCP SDK `streamablehttp_client`:
from mcp import ClientSession
from mcp.client.streamable_http import streamablehttp_client

from langgraph.prebuilt import create_react_agent
from langchain.agents import create_agent
from langchain_mcp_adapters.tools import load_mcp_tools

async with streamablehttp_client("http://localhost:3000/mcp/") as (read, write, _):
Expand All @@ -179,7 +179,7 @@ async with streamablehttp_client("http://localhost:3000/mcp/") as (read, write,

# Get tools
tools = await load_mcp_tools(session)
agent = create_react_agent("openai:gpt-4.1", tools)
agent = create_agent("openai:gpt-4.1", tools)
math_response = await agent.ainvoke({"messages": "what's (3 + 5) x 12?"})
```

Expand All @@ -188,7 +188,7 @@ Use it with `MultiServerMCPClient`:
```python
# Use server from examples/servers/streamable-http-stateless/
from langchain_mcp_adapters.client import MultiServerMCPClient
from langgraph.prebuilt import create_react_agent
from langchain.agents import create_agent

client = MultiServerMCPClient(
{
Expand All @@ -199,7 +199,7 @@ client = MultiServerMCPClient(
}
)
tools = await client.get_tools()
agent = create_react_agent("openai:gpt-4.1", tools)
agent = create_agent("openai:gpt-4.1", tools)
math_response = await agent.ainvoke({"messages": "what's (3 + 5) x 12?"})
```

Expand All @@ -214,7 +214,7 @@ When connecting to MCP servers, you can include custom headers (e.g., for authen

```python
from langchain_mcp_adapters.client import MultiServerMCPClient
from langgraph.prebuilt import create_react_agent
from langchain.agents import create_agent

client = MultiServerMCPClient(
{
Expand All @@ -229,7 +229,7 @@ client = MultiServerMCPClient(
}
)
tools = await client.get_tools()
agent = create_react_agent("openai:gpt-4.1", tools)
agent = create_agent("openai:gpt-4.1", tools)
response = await agent.ainvoke({"messages": "what is the weather in nyc?"})
```

Expand Down Expand Up @@ -291,7 +291,7 @@ If you want to run a LangGraph agent that uses MCP tools in a LangGraph API serv
# graph.py
from contextlib import asynccontextmanager
from langchain_mcp_adapters.client import MultiServerMCPClient
from langgraph.prebuilt import create_react_agent
from langchain.agents import create_agent

async def make_graph():
client = MultiServerMCPClient(
Expand All @@ -310,7 +310,7 @@ async def make_graph():
}
)
tools = await client.get_tools()
agent = create_react_agent("openai:gpt-4.1", tools)
agent = create_agent("openai:gpt-4.1", tools)
return agent
```

Expand Down
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