Files
modelcontextprotocol--pytho…/examples/snippets/servers/streamable_http_basic_mounting.py
2026-01-25 14:45:52 +01:00

39 lines
925 B
Python

"""Basic example showing how to mount StreamableHTTP server in Starlette.
Run from the repository root:
uvicorn examples.snippets.servers.streamable_http_basic_mounting:app --reload
"""
import contextlib
from starlette.applications import Starlette
from starlette.routing import Mount
from mcp.server.mcpserver import MCPServer
# Create MCP server
mcp = MCPServer("My App")
@mcp.tool()
def hello() -> str:
"""A simple hello tool"""
return "Hello from MCP!"
# Create a lifespan context manager to run the session manager
@contextlib.asynccontextmanager
async def lifespan(app: Starlette):
async with mcp.session_manager.run():
yield
# Mount the StreamableHTTP server to the existing ASGI server
# Transport-specific options are passed to streamable_http_app()
app = Starlette(
routes=[
Mount("/", app=mcp.streamable_http_app(json_response=True)),
],
lifespan=lifespan,
)