Customize Claude Code's system prompts, create custom toolsets, input pattern highlighters, themes/thinking verbs/spinners, customize input box & user message styling, support AGENTS.md, unlock private/unreleased features, and much more. Supports both native/npm installs on all platforms.
Switch between multiple AI CLI accounts (Claude Code, Codex, Gemini/Antigravity) from one TUI — Keychain-backed credential swap with automatic rollback and partial-failure recovery.