[DOCS] Remote Control docs missing `/extra-usage` support for mobile/web clients

Documentation Type

Missing documentation (feature not documented)

Documentation Location

https://code.claude.com/docs/en/remote-control

Section/Topic

Remote Control mobile/web client capabilities, especially slash-command availability when controlling a local session from claude.ai/code or the Claude mobile app.

Current Documentation

The Remote Control page currently says:

"* Work from both surfaces at once: the conversation stays in sync across all connected devices, so you can send messages from your terminal, browser, and phone interchangeably"

And the commands reference says:

"| /extra-usage | Configure extra usage to keep working when rate limits are hit |"

The Claude Code on the web docs also have an explicit command-availability section:

"Cloud sessions support built-in commands that produce text output. Commands that open an interactive terminal picker, like /model or /config, are not available."

But the Remote Control docs do not say that /extra-usage is available from Remote Control mobile/web clients.

What's Wrong or Missing?

Changelog v2.1.113 added: "/extra-usage now works from Remote Control (mobile/web) clients".

That user-facing capability is not documented on the Remote Control page or in the /extra-usage command reference. The current docs explain that Remote Control keeps terminal, browser, and phone sessions in sync, but they do not tell users that they can run /extra-usage from claude.ai/code or the Claude mobile app while attached to a local session.

This leaves a gap in surface-specific command behavior: Claude Code on the web documents which built-in commands work in that surface, while Remote Control does not document this newly supported command.

Suggested Improvement

Add a short subsection to https://code.claude.com/docs/en/remote-control near the connection or limitations guidance that documents command availability from Remote Control clients.

At minimum, mention that as of v2.1.113, /extra-usage can be run from Remote Control sessions in claude.ai/code and the Claude mobile app.

Also add a brief note to https://code.claude.com/docs/en/commands for /extra-usage, for example:

Available in Remote Control mobile/web clients when connected to a local session.

If there are other Remote Control-specific command compatibility rules, group them into a small table similar to the existing command-availability section on the Claude Code on the web page.

Impact

Medium - Makes feature difficult to understand

Additional Context

Affected Pages:

| Page | Context |
|------|---------|
| https://code.claude.com/docs/en/remote-control | Primary documentation for what users can do from browser/mobile while attached to a local session |
| https://code.claude.com/docs/en/commands | /extra-usage command reference currently lacks any Remote Control availability note |

Total scope: 2 pages affected

Cross-reference:

| Page | Context |
|------|---------|
| https://code.claude.com/docs/en/claude-code-on-the-web | Existing example of surface-specific command availability documentation |

Source: Changelog v2.1.113

Exact changelog entry:

/extra-usage now works from Remote Control (mobile/web) clients