Function lifespan

examples/mcp/manager_example/app.py:32–52

(app: FastAPI)

@asynccontextmanager
async def lifespan(app: FastAPI):
    server = MCPServerStreamableHttp({"url": MCP_SERVER_URL})
    inactive_server = MCPServerStreamableHttp({"url": INACTIVE_MCP_SERVER_URL})
    servers = [server, inactive_server]
    if USE_MCP_MANAGER:
        async with MCPServerManager(
            servers=servers,
            connect_in_parallel=True,
        ) as manager:
            app.state.mcp_manager = manager
            app.state.mcp_servers = servers
            yield
        return

    await server.connect()
    app.state.mcp_servers = servers
    app.state.active_servers = [server]
    try:
        yield
    finally:
        await server.cleanup()


app = FastAPI(lifespan=lifespan)