tweakcc
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.
- 2.6k stars
- 211 forks
- 21 open issues
- Language: TypeScript
- License: MIT
- updated
Install
git clone https://github.com/Piebald-AI/tweakcc- Clone the repository.
- Follow the README for installation and usage instructions.
Editor's note
Tweakcc is a TypeScript CLI tool distributed via npm that modifies Claude Code's bundled JavaScript files directly, allowing developers to customize the application well beyond its built-in settings. Core features include editing any of Claude Code's system prompts, creating named toolsets accessible via a new `/toolset` command, building custom UI themes with an HSL/RGB color picker, adding custom thinking verbs and spinner animations, and highlighting input patterns with per-character styling similar to the former `ultrathink` rainbow effect. Version 4.0.0 added AGENTS.md support, a `/remember` skill, MCP startup optimization, token count rounding, statusline throttling, and the ability to unlock unreleased features such as session memory. A standout addition is the `opusplan[1m]` model alias, which routes planning to Claude Opus while using Sonnet's one-million-token context window for execution. The tool targets Claude Code users on all platforms who want fine-grained control over prompts, models per subagent role, table rendering formats, and terminal UI presentation that the official client does not expose.
Tools overview
What people ask about tweakcc
What is Piebald-AI/tweakcc?
Piebald-AI/tweakcc is tools for the Claude AI ecosystem. 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. It has 2.6k GitHub stars and its last recorded update is dated 2026-10-22.
How do I install tweakcc?
You can install tweakcc by cloning the repository (https://github.com/Piebald-AI/tweakcc) or following the README instructions on GitHub. ClaudeWave also provides quick install blocks on this page.
Is Piebald-AI/tweakcc safe to use?
Our security agent has analyzed Piebald-AI/tweakcc and assigned a Trust Score of 100/100 (tier: Verified). See the full breakdown of passed checks and flags on this page.
Who maintains Piebald-AI/tweakcc?
Piebald-AI/tweakcc is maintained by Piebald-AI. The last recorded GitHub activity is dated 2026-10-22, with 21 open issues.
Are there alternatives to tweakcc?
Yes. On ClaudeWave you can browse similar tools at /categories/tools, sorted by popularity or recent activity.