Merge pull request chigwell#164 from errogaht/agent/stateless-http-restarts

fix(http): keep clients usable across server restarts

Author: chigwell

telegram_mcp/runtime.py

@@ -110,7 +110,10 @@ def get_entity_filter_type(entity: Any) -> Optional[str]:
 TELEGRAM_API_ID = int(os.getenv("TELEGRAM_API_ID"))
 TELEGRAM_API_HASH = os.getenv("TELEGRAM_API_HASH")
 
-mcp = FastMCP("telegram")
+# The shared HTTP service can be consumed by long-lived MCP clients. Stateless requests keep
+# those clients usable across server-process restarts instead of rejecting their next call
+# with "No valid session ID provided". Stdio transport remains unaffected.
+mcp = FastMCP("telegram", stateless_http=True)
 
 # Annotate all tool results with audience=["user"] so MCP clients know
 # the content is user-generated data, not instructions for the model.

tests/test_runtime.py

@@ -43,6 +43,11 @@ def write_tool():
     return server
 
 
+def test_shared_server_uses_stateless_http_transport():
+    """A service restart must not invalidate long-lived Streamable HTTP clients."""
+    assert runtime.mcp.settings.stateless_http is True
+
+
 def test_get_exposed_tools_mode_defaults_to_all(monkeypatch):
     monkeypatch.delenv("TELEGRAM_EXPOSED_TOOLS", raising=False)