The official example code does not work

[BHznJNs]

In the low level api part, the first example is:

from contextlib import asynccontextmanager
from collections.abc import AsyncIterator

from fake_database import Database  # Replace with your actual DB type

from mcp.server import Server


@asynccontextmanager
async def server_lifespan(server: Server) -> AsyncIterator[dict]:
    """Manage server startup and shutdown lifecycle."""
    # Initialize resources on startup
    db = await Database.connect()
    try:
        yield {"db": db}
    finally:
        # Clean up on shutdown
        await db.disconnect()


# Pass lifespan to server
server = Server("example-server", lifespan=server_lifespan)


# Access lifespan context in handlers
@server.call_tool()
async def query_db(name: str, arguments: dict) -> list:
    ctx = server.get_context()
    db = ctx.lifespan_context["db"]
    return await db.query(arguments["query"])

I tried to run this example, but my editor shows that the class Server does not have a method named get_context, and it actually does so in runtime.

[BHznJNs]

Update:
In my environment, the ctx = server.get_context() should be changed to:

ctx = server.request_context

I uses the latest version of 1.9.1

[datashaman]

You should be able to access it this way: https://github.com/modelcontextprotocol/python-sdk?tab=readme-ov-file#context

[BHznJNs]

You should be able to access it this way: https://github.com/modelcontextprotocol/python-sdk?tab=readme-ov-file#context

Yeah, but I am trying to use the low-level server, and the first example of the low-level server does not work since the class Server does not have a method named get_context.

[hesreallyhim]

i am using lowlevel Server as well, you can use
server.request_context, like:
session = server.request_context.session
request_context is a property-decorated function:

@property
    def request_context(self) -> RequestContext[ServerSession, LifespanResultT]:

so yes i would agree the example code is inaccurate.