/rubber-duck command not working in Copilot CLI

[ashis-baral]

Code of Conduct

• I have read and agree to the GitHub Docs project's Code of Conduct

What article on docs.github.com is affected?

https://github.com/proxy/docs.github.com/en/copilot/concepts/agents/copilot-cli/rubber-duck#manually-invoking-the-rubber-duck-agent

What part(s) of the article would you like to see updated?

The article states that the Rubber Duck agent can be manually invoked with the slash command:

/rubber-duck What edge cases are missing?

However, when I run this command in the latest version of GitHub Copilot CLI, it returns:

Unknown command: /rubber-duck

The Rubber Duck agent itself is available and working correctly. For example, the following natural-language request works successfully in the same environment:

Rubber duck What edge cases are missing?

This suggests that the issue is specifically with the documented /rubber-duck slash-command invocation rather than the Rubber Duck agent itself.

Update the documentation if the /rubber-duck slash command is no longer supported.

Additional information

The issue does not appear to be that the Rubber Duck agent is unavailable, since the natural-language invocation successfully triggers it in the same environment.

[subatoi]

@ashis-baral Thanks for opening an issue. I'm going to transfer this internally.

As a general rule, if your package includes GitHub Support, that's a better path for resolving issues like this, in case there's a configuration issue. Or alternatively, you can open a discussion under https://github.com/orgs/community/discussions if not.

As we're unable to provide support in this repo, I won't be able to follow up here, but you'll see the text change if that's the needed outcome. Thanks again

[docs-bot]

Thank you for opening this issue! Updates to this documentation must be made internally. I have copied your issue to an internal issue, so I will close this issue.

[ashis-baral]

@subatoi Thanks for clarifying. I’m not looking for support or troubleshooting here. I’m on the GitHub Free plan.

My intention was simply to report the documentation issue. If the /rubber-duck command is no longer supported, I can open a PR to remove or update the incorrect documentation.

Thanks for transferring the issue internally!