| name | dspy-mcp-tool-integration |
| version | 1.0.0 |
| dspy-compatibility | 3.2.1 |
| tags | ["agent","production"] |
| requires-extras | ["dspy[mcp]"] |
| description | Use for MCP tools with DSPy, Model Context Protocol servers, dspy.Tool.from_mcp_tool, and ReAct agents over MCP-compatible tools. |
| allowed-tools | ["Read","Write","Glob","Grep"] |
DSPy MCP Tool Integration
Goal
Connect an MCP server with the MCP Python client, convert its tools to dspy.Tool, and use them in an async DSPy agent.
Install
pip install -U "dspy[mcp]>=3.2.1,<3.3"
DSPy converts tools but does not manage MCP connections. Keep the ClientSession alive for as long as the DSPy tools are in use.
Streamable HTTP Server
import asyncio
import dspy
from mcp import ClientSession
from mcp.client.streamable_http import streamablehttp_client
async def main():
async with streamablehttp_client("http://localhost:8000/mcp") as (read, write):
async with ClientSession(read, write) as session:
await session.initialize()
response = await session.list_tools()
tools = [dspy.Tool.from_mcp_tool(session, tool) for tool in response.tools]
agent = dspy.ReAct("task -> result", tools=tools, max_iters=5)
output = await agent.acall(task="Check the weather in Tokyo")
print(output.result)
asyncio.run(main())
Local Stdio Server
import asyncio
import dspy
from mcp import ClientSession, StdioServerParameters
from mcp.client.stdio import stdio_client
async def main():
params = StdioServerParameters(
command="python3",
args=["path/to/server.py"],
env=None,
)
async with stdio_client(params) as (read, write):
async with ClientSession(read, write) as session:
await session.initialize()
response = await session.list_tools()
tools = [dspy.Tool.from_mcp_tool(session, tool) for tool in response.tools]
agent = dspy.ReAct("question -> answer", tools=tools, max_iters=5)
print((await agent.acall(question="What is 25 + 17?")).answer)
asyncio.run(main())
Best Practices
- Use
acall() because MCP tools are asynchronous.
- Initialize the session before listing tools.
- Keep tool descriptions precise at the MCP server boundary.
- Apply authentication and authorization before exposing sensitive tools.
- Set a modest
max_iters and trace tool use in production.
Related Skills
Official Documentation
