Remote Control web UI shows raw ANSI escape codes for local command output

Description

When using Remote Control (web UI at claude.ai/code) connected to a local CLI session, built-in commands that produce ANSI-formatted output (e.g. /context) display raw escape sequences instead of rendered text.

Steps to reproduce

1. Start a Claude Code session locally
2. Connect via Remote Control from the web UI
3. Run /context (or any built-in command that uses ANSI colors/formatting)

Expected behavior

The output should either:

• Render the ANSI escape codes as formatted/colored text (preferred)
• Strip the ANSI codes and show plain text (acceptable fallback)

Actual behavior

Raw ANSI escape sequences are displayed as literal text, e.g.:

[1mContext Usage[22m
[38;5;244m⛁ ⛁ [38;5;246m⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ ⛁ [39m  [38;5;246mclaude-opus-4-6 · 37k/200k tokens (18%)[39m

Screenshots

The same /context command rendered properly in the terminal CLI vs showing raw codes in the Remote Control web UI.

Additional context

• Remote Control is otherwise functional (message relay, tool approval work fine)
• Affects all local commands that produce colored/formatted terminal output
• Tested on Claude Code with Opus 4.6, Remote Control research preview

Broader note

The Remote Control web UI currently lacks several CLI features beyond rendering: no / command autocomplete, no /mcp toggle, no /skills browser, no /context display. At minimum, rendering the output of commands that do work would be a quick win.

Generated with Claude Code