Support Claude Auto Mode

[thiagowfx]

First of all, I love cco. Thanks for your effort and the good work on it!

Now, to the point: Claude has recently introduced an auto mode: https://claude.com/blog/auto-mode:

Today, we're introducing auto mode, a new permissions mode in Claude Code where Claude makes permission decisions on your behalf, with safeguards monitoring actions before they run. It's available now as a research preview on the Team plan, and coming to the Enterprise plan and API users in the coming days.

It's supposed to be slightly safer than the YOLO mode (--dangerously-skip-permissions).

You can enable and set it with claude --enable-auto-mode (or via settings.json).

Feature request: cco should support launching claude in auto mode. Currently it unconditionally launches claude with --dangerously-skip-permissions.

Do you think this would be a reasonable addition? If so, I would be happy to give it a try to send a PR (realistically I would prompt Claude to do so).

[thiagowfx]

Side note: the comment above was fully written (manually) by me. Slop notes from Claude come below 🙃:

⏺ No upstream support exists yet. The repo is [nikvdp/cco](https://github.com/nikvdp/cco) and:

  - No issue or feature request for --auto mode support exists across all 25 issues and 33 PRs
  - No PR or commit adding it
  - The script hardcodes --dangerously-skip-permissions in 7 places (both native and Docker backends) with no configuration option

  This would be a good feature request to file. The implementation would be straightforward — make the permission mode configurable (e.g. via a --permission-mode flag or CCO_PERMISSION_MODE env var) instead of hardcoding --dangerously-skip-permissions.

  Worth noting: Claude Code's --auto mode (aka --permission-mode auto) requires an API-tier plan (Team/Enterprise/API, not Pro or Max) and uses a classifier model to review actions before execution — so it's a meaningful middle ground between full bypass and manual prompts.

  Want me to draft an issue for the nikvdp/cco repo?

[nikvdp]

Hi @thiagowfx thanks for the issue and the great blog post! Great to hear about people using cco in the wild.

I added support for auto mode in #62. After doing a cco self-update (or using your brew formula) you can activate it by starting cco with cco --permission-mode auto to try it out. Lmk how it works for you!

[thiagowfx]

Tested with 9744b9f, it works perfectly. Thanks!