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[Bug]: Claude provider slash commands not discovered; unrecognized command freezes UI #1329
Description
Activity
Update: I upgraded to 0.0.15 (f82bae1).
The app looked like it found and used my custom
suggest-renameskill to suggest a better thread name, but/renamestill hangs while thinking for 0s.I opened Claude Code in the same folder as the T3 Code project and the project name matched the original thread name in the project window.
I also tried renaming the thread in the T3 UI to see whether that would rename the underlying Claude Code thread/prompt, but it did not.
When I deleted the thread to remove the project (which you have to), the thread name in Claude Code changed to Unknown skill: rename via
claude --resume.Not sure whether this is useful, but hopefully the screenshots help explain this update:
If this update is not useful then I am happy to delete to keep the issue simpler.
Upvote, I have exactly the same issue
in the t3 code
when looking up this conversation via claude code in the terminal
- changed the title
[-]Slash commands freeze UI when using Claude provider — built-in and custom commands not recognized[/-][+][Bug]: Claude provider slash commands not discovered; unrecognized command freezes UI[/+]on Apr 1, 2026 I have the same issue. Can not run even basic claude commands such as
/usage. This makes my usage of Claude Code limited even though I like the GUI from T3Code. Hoping this gets resolved soon.Should be fixed in #1905
Summary
When using Claude as the model provider, slash commands (
/) supported by Claude Code but not recognised by T3 Code (including built-in and user-defined commands) are treated as unknown skills, and submitting them causes the UI to freeze and become unresponsiveAdditionally:
/renameare not recognized (shows "Unknown skill: rename")/suggest-renamedefined in~/.claude/commands/suggest-rename.md) are not discovered or loadedOnly a limited set of T3 Code-native commands (
/model,/plan,/default) appear in the autocomplete dropdown — none of the Claude Code built-in or user-defined commands are available.Steps to Reproduce
~/.claude/commands/suggest-rename.md/suggest-rename— returns "Unknown skill: suggest-rename"/rename— returns "Unknown skill: rename"/rename claude-code-rename-and-custom-slash-commandsubmit and wait.Expected Behavior
/rename,/help, etc.) should work~/.claude/commands/and~/.claude/skills/should be discovered and availableActual Behavior
/model,/plan,/default) are available/command paletteScreenshot
Screenshot shows the frozen state — Claude correctly identified the custom command exists at
~/.claude/commands/suggest-rename.md, but invoking it via/suggest-renamefailed. The/renamebuilt-in also failed. The input is frozen with a loading spinner.Related
This is likely related to #1283 which identifies that
settingSourcesis not being passed to the Claude Agent SDK, meaning all filesystem-based Claude Code features (skills, slash commands, CLAUDE.md memory) are silently ignored. The freeze behavior may be an additional issue where an unrecognized command causes the session to hang rather than failing gracefully.Environment