Cline MCP Settings Schema Validation Error: "Invalid MCP settings schema"

Environment Details:

- OS: macOS sequoia 15.5
- Platform: Version: 1.105.1 (Universal)
- Cline Extension Version: 3.33.1
- Supabase MCP Server: github.com/supabase-community/supabase-mcp (hosted)

What's happening: Getting persistent "invalid MCP settings schema" error when clicking the "Manage MCP Servers" button in Cline. The UI shows "No servers installed" despite having installed servers from the marketplace. The settings file appears valid and contains server configurations.

Steps I've tried:

1. Checked the MCP settings file manually - it contains valid JSON
2. Reinstalled the Supabase MCP server multiple times from marketplace
3. Restarted VS Code completely
4. Checked for syntax errors in the settings file

Current MCP settings file content:

{
  "mcpServers": {
    "supabase": {
      "type": "http",
      "url": "https://mcp.supabase.com/mcp?project_ref=qediwamdvwrzrzvyjbkr"
    },
    "supabase-mcp": {
      "type": "http",
      "url": "https://mcp.supabase.com/mcp"
    },
    "github.com/supabase-community/supabase-mcp": {
      "type": "http",
      "url": "https://mcp.supabase.com/mcp",
      "disabled": false,
      "autoApprove": []
    }
  }
}

{
  "mcpServers": {
    "supabase": {
      "type": "http",
      "url": "https://mcp.supabase.com/mcp?project_ref=qediwamdvwrzrzvyjbkr"
    },
    "supabase-mcp": {
      "type": "http",
      "url": "https://mcp.supabase.com/mcp"
    },
    "github.com/supabase-community/supabase-mcp": {
      "type": "http",
      "url": "https://mcp.supabase.com/mcp",
      "disabled": false,
      "autoApprove": []
    }
  }
}

What I'm trying to achieve: Get the MCP server management interface working so I can properly configure and use Supabase MCP tools in Cline for database and project management.

Additional notes: The installed server shows in the file but the UI validation is rejecting it with schema errors. Looking for guidance on the expected JSON schema format or potential conflicts.

{
  "mcpServers": {
    "supabase": {
      "type": "http",
      "url": "https://mcp.supabase.com/mcp?project_ref=qediwamdvwrzrzvyjbkr"
    },
    "supabase-mcp": {
      "type": "http",
      "url": "https://mcp.supabase.com/mcp"
    },
    "github.com/supabase-community/supabase-mcp": {
      "type": "http",
      "url": "https://mcp.supabase.com/mcp",
      "disabled": false,
      "autoApprove": []
    }
  }
}

{
  "mcpServers": {
    "supabase": {
      "type": "http",
      "url": "https://mcp.supabase.com/mcp?project_ref=qediwamdvwrzrzvyjbkr"
    },
    "supabase-mcp": {
      "type": "http",
      "url": "https://mcp.supabase.com/mcp"
    },
    "github.com/supabase-community/supabase-mcp": {
      "type": "http",
      "url": "https://mcp.supabase.com/mcp",
      "disabled": false,
      "autoApprove": []
    }
  }
}

Cline MCP Settings Schema Validation Error: "Invalid MCP settings schema"

Cline MCP Settings Schema Validation Error: "Invalid MCP settings schema"

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