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tweakcc

tweakcc is a CLI tool that upgrades your Claude Code experience. Customize its system prompts, add custom themes, create toolsets, and personalize the UI. From the team behind Piebald.

ing...' to 'Claude is ing', changing the generating spinner style to a 50ms glow animation, applying the changes, running Claude, and using '/config' to switch to the new theme, and sending a message to see the new thinking verb format." width="800">

[!IMPORTANT] NEW in 4.0.0: tweakcc now has an API; use npm i tweakcc to add to your project and see API!

NEW in 4.0.0: You can now create custom patches via sandboxed scripts! Works with native installations. No need to fork tweakcc just to make a quick patch! See tweakcc adhoc-patch.

NEW in 4.0.0: You can also apply customizations from a remote URL to a config file. See Remote Config.

Also see tweakcc --restore, tweakcc unpack, and tweakcc repack.

[!NOTE] NEW: tweakcc 4.0.0 also introduces several new patches:

• AGENTS.md support (demo video)
• :lock: unlock session memory (blog post) (thank you @odysseus0!)
• /remember skill
• input pattern highlighters
• Opus plan 1M
• MCP startup optimization
• token count rounding
• statusline throttling/pacing
• auto-accept plan mode (thank you @irdbl!)
• dangerously bypassing permissions in sudo (thank you @brrock!)
• native installer warning suppression (thank you @brrock!).

With tweakcc, you can