[MCP] OAuth Detection Issue with Google GenAI Toolbox BigQuery Server

[hinewin]

I encountered an issue where LibreChat was incorrectly detecting OAuth authentication requirements for a Google GenAI Toolbox BigQuery MCP server that uses Google Cloud service account authentication.

Is there a way to disable this OAuth check?

Latest version: 1.2.8
      Check out the Config changelogs for the latest options and features added.
      https://... [truncated]
2025-07-22T18:31:59.133Z info: Configuring social logins...
2025-07-22T18:31:59.136Z info: Server listening on all interfaces at port 3080. Use http://localhost:3080 to access it
2025-07-22T18:31:59.136Z info: Initializing MCP servers...
2025-07-22T18:31:59.387Z debug: [mcp_get_tokens:tokens:000000000000000000000000:mcp-toolbox] Creating initial flow state
2025-07-22T18:31:59.390Z info: [MCP][mcp-toolbox] Access token missing
2025-07-22T18:31:59.392Z info: [MCP][mcp-toolbox] Access token missing and no refresh token available
2025-07-22T18:31:59.413Z info: [MCP][mcp-toolbox] Setting up OAuth event listener
2025-07-22T18:31:59.414Z info: [MCP][mcp-toolbox] Creating streamable-http transport: http://gcp-database-mcp-service.mcp-servers.svc.cluster.local:5000/mcp/bigquery-project-111-too... [truncated]
2025-07-22T18:31:59.415Z debug: [MCP][mcp-toolbox] Transport sending: {"method":"initialize","params":{"protocolVersion":"2025-03-26","capabilities":{},"clientInfo":{"name":"@librech... [truncated]
2025-07-22T18:31:59.446Z debug: [MCP][mcp-toolbox] Transport sending: {"method":"notifications/initialized","jsonrpc":"2.0"}
2025-07-22T18:31:59.451Z debug: [MCP][mcp-toolbox] Transport sending: {"method":"ping","jsonrpc":"2.0","id":1}
2025-07-22T18:31:59.452Z debug: [MCP][mcp-toolbox] Transport sending: {"method":"ping","jsonrpc":"2.0","id":2}
2025-07-22T18:31:59.458Z error: [MCP][mcp-toolbox] Ping failed: MCP error -32601: invalid method ping
2025-07-22T18:31:59.459Z error: [MCP][mcp-toolbox] Ping failed: MCP error -32601: invalid method ping
2025-07-22T18:32:01.461Z info: [MCP][mcp-toolbox] Creating streamable-http transport: http://gcp-database-mcp-service.mcp-servers.svc.cluster.local:5000/mcp/bigquery-project-111-too... [truncated]
2025-07-22T18:32:01.462Z debug: [MCP][mcp-toolbox] Transport sending: {"method":"initialize","params":{"protocolVersion":"2025-03-26","capabilities":{},"clientInfo":{"name":"@librech... [truncated]
2025-07-22T18:32:01.464Z debug: [MCP][mcp-toolbox] Transport sending: {"method":"notifications/initialized","jsonrpc":"2.0"}
2025-07-22T18:32:01.466Z debug: [MCP][mcp-toolbox] Transport sending: {"method":"ping","jsonrpc":"2.0","id":4}
2025-07-22T18:32:01.467Z debug: [MCP][mcp-toolbox] Transport sending: {"method":"ping","jsonrpc":"2.0","id":5}
2025-07-22T18:32:01.469Z error: [MCP][mcp-toolbox] Ping failed: MCP error -32601: invalid method ping
2025-07-22T18:32:01.471Z error: [MCP][mcp-toolbox] Ping failed: MCP error -32601: invalid method ping
2025-07-22T18:32:05.472Z info: [MCP][mcp-toolbox] Creating streamable-http transport: http://gcp-database-mcp-service.mcp-servers.svc.cluster.local:5000/mcp/bigquery-project-111-too... [truncated]
2025-07-22T18:32:05.472Z debug: [MCP][mcp-toolbox] Transport sending: {"method":"initialize","params":{"protocolVersion":"2025-03-26","capabilities":{},"clientInfo":{"name":"@librech... [truncated]
2025-07-22T18:32:05.477Z debug: [MCP][mcp-toolbox] Transport sending: {"method":"notifications/initialized","jsonrpc":"2.0"}
2025-07-22T18:32:05.480Z debug: [MCP][mcp-toolbox] Transport sending: {"method":"ping","jsonrpc":"2.0","id":7}
2025-07-22T18:32:05.480Z debug: [MCP][mcp-toolbox] Transport sending: {"method":"ping","jsonrpc":"2.0","id":8}
2025-07-22T18:32:05.483Z error: [MCP][mcp-toolbox] Ping failed: MCP error -32601: invalid method ping
2025-07-22T18:32:05.485Z error: [MCP][mcp-toolbox] Ping failed: MCP error -32601: invalid method ping
2025-07-22T18:32:05.486Z error: [MCP][mcp-toolbox] Failed to connect after 3 attempts Connection attempt succeeded but status is not connected
2025-07-22T18:32:05.486Z error: [MCP][mcp-toolbox] Initialization failed Connection attempt succeeded but status is not connected
2025-07-22T18:32:05.486Z info: [MCP] Initialized 0/1 app-level server(s)
2025-07-22T18:32:05.486Z warn: [MCP] 1/1 app-level server(s) failed to initialize
2025-07-22T18:32:05.486Z info: [MCP][mcp-toolbox] ✗ Failed
2025-07-22T18:32:05.487Z warn: [MCP] No app-level servers initialized
2025-07-22T18:32:05.488Z info: MCP servers initialized successfully

Here is my mcpServers setup

data:
  librechat.yaml: |
    version: 1.2.1
    cache: true
    interface:
      modelSelect: true
      privacyPolicy:
        externalUrl: "https://librechat.ai/privacy-policy"
        openNewTab: true
      termsOfService:
        externalUrl: "https://librechat.ai/tos"
        openNewTab: true

    mcpServers:
      mcp-toolbox:
        type: streamable-http
        url: http://gcp-database-mcp-service.mcp-servers.svc.cluster.local:5000/mcp/bigquery-jira-111-tools