Slash command autocomplete in Claude Code Desktop app

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

The Claude Code Terminal has slash command autocomplete: typing / shows a filterable dropdown of all discovered skills from ~/.claude/skills/, project .claude/skills/, and installed plugins. The Claude Code Desktop app does not have this autocomplete. Typing / in the Desktop app input does nothing until you type the full command name and hit enter.

For users with many custom skills, there is no way to browse or search available skills from the input field. You have to remember the exact skill name, which becomes impractical as your skill library grows.

Proposed Solution

Add the same / autocomplete dropdown to the Claude Code Desktop app that exists in the Terminal. When a user types / in the chat input, show a filterable list of all discovered skills from:

• ~/.claude/skills/ (global/personal skills)
• <project>/.claude/skills/ (project-level skills)
• Installed plugins that register skills
• Built-in commands (/help, /model, /clear, etc.)

Alternative Solutions

If full autocomplete is not feasible in the Desktop app UI, a "Browse Skills" button or searchable skill picker (similar to how the Customize > Skills panel works, but for file-based skills) would also solve the discoverability problem.

Priority

High - Significant impact on productivity

Feature Category

Interactive mode (TUI)

Use Case Example

I have 80+ custom skills across global and project scopes. In the Terminal, I type / and start typing a few characters to filter down to the skill I need (e.g., /blog filters to blog-from-video). In the Desktop app, I have to remember that the skill is called blog-from-video and type the full name. If I misremember it as blog-to-post or video-blog, nothing happens and I get no feedback that the skill was not found.

Additional Context

• The Desktop app's Customize > Skills panel shows a separate server-side skill system (claude.ai Project skills), not the file-based .claude/skills/ skills. This creates confusion since users see a small number of UI-created skills in the panel but have many more available via slash commands that are invisible in the interface.
• Skills invoked by typing the full /skill-name do work correctly in the Desktop app, confirming this is a discoverability issue, not a functionality issue.
• Related issues: #32051 (mobile autocomplete), #22020 (built-in commands hidden with many skills), #18949 (plugin skills missing from autocomplete)
• Platform: Windows 11, Claude Code Desktop app