## Description

When adding a remote streamable-http MCP server to `config.yaml` (e.g. GitHub's hosted MCP at `https://api.githubcopilot.com/mcp/`), LiteLLM crashes during startup with:

``` RuntimeError: Attempted to exit cancel scope in a different task than it was entered in ```

This prevents the server from initializing MCP tool discovery and the tools are never registered.

## Config

```yaml mcp_servers: github: url: https://api.githubcopilot.com/mcp/ transport: sse # also tried: http allow_all_keys: true headers: Authorization: "Bearer os.environ/GITHUB_PAT" ```

## Error (from `docker compose logs`)

``` LiteLLM:WARNING: client.py:385 - MCP client list_tools was cancelled LiteLLM:WARNING: mcp_server_manager.py:1610 - Task cancelled while listing tools from github

File "/usr/lib/python3.13/site-packages/mcp/server/streamable_http_manager.py", line 117, in run yield # Let the application run ^^^^^ GeneratorExit

...

RuntimeError: Attempted to exit cancel scope in a different task than it was entered in ```

## Root Cause

This is an upstream bug in the MCP Python SDK. AnyIO requires cancel scopes to be entered and exited in the same task.…