[Question] MCP tools with auth

[enxilium]

I'm trying to integrate the Notion MCP as an MCP for my agent. As far as I am aware, it recommends using HTTP, but as far as I'm aware it's not raising any auth events as described by https://google.github.io/adk-docs/tools/authentication/#2-handling-the-interactive-oauthoidc-flow-client-side. It also seems to completely stall my agent initialization and doesn't proceed further.

I've attached my tools definition below:

import os
from dotenv import load_dotenv

from google.adk.tools.mcp_tool.mcp_toolset import MCPToolset, StdioServerParameters, StdioConnectionParams, StreamableHTTPConnectionParams
from google.adk.auth.auth_schemes import AuthScheme
from google.adk.auth.auth_credential import AuthCredential

load_dotenv()

GOOGLE_MAPS_API_KEY = os.getenv("GOOGLE_MAPS_API_KEY")

mcpServers = [
    MCPToolset(
        connection_params=StdioConnectionParams(
            server_params=StdioServerParameters(
                command='npx',
                args=[
                    "-y",
                    "@modelcontextprotocol/server-google-maps",
                ],
                env={
                    "GOOGLE_MAPS_API_KEY": GOOGLE_MAPS_API_KEY
                }
            )
        ),

    ),
    MCPToolset(
        connection_params=StreamableHTTPConnectionParams(
            url="https://mcp.notion.com/mcp"
        ),
    )
]

I am using Gemini Live Bidi streaming in an Electron requirement and WebSockets for communication. Is this an issue on Notion's MCP side or am I configuring something incorrectly? Thanks!

P.S. If anyone could show me a successful example of using an MCP server with browser-based OAuth authentication flow, that would be greatly appreciated.