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The Grunt MCP Server uses streamable HTTP and OAuth authentication.

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Add the server to your client

1

Open your client's MCP settings

Add a remote MCP server. The exact name of this setting depends on your client.
2

Enter the Grunt MCP URL

3

Sign in to Grunt

Connect the server. Your client opens the authorization flow and prompts you to sign in.
4

Approve access

Complete the authorization flow. Your client can then discover and call the available tools.
Your MCP client must support OAuth for remote MCP servers.

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OAuth metadata

Clients can discover the server’s protected resource metadata at:
The response includes:
  • resource
  • authorization_servers
  • scopes_supported
The server currently advertises the openid, profile, and email scopes.

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Test an authenticated connection

If you already have a valid access token, you can request the current tool list directly:
Include both application/json and text/event-stream in the Accept header when calling the MCP endpoint directly.

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Troubleshooting

  • A 401 Unauthorized response means the request does not include a valid access token. Reconnect the server and complete sign-in.
  • If the server does not appear in your client, confirm that the client supports remote MCP servers over streamable HTTP.
  • If tool discovery fails after sign-in, remove the connection and add it again to refresh authorization.