Open sourceTypeScript · ≈2.6k stars · MIT
tweakcc
Customise Claude Code's system prompts, toolsets, themes and UI.
Patches Claude Code to customise system prompts, create custom toolsets, add input highlighters, themes and spinners, support AGENTS.md and unlock unreleased features.
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Small, composable agent skills for real engineering work.
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Connections
Relations from the Harness Hub knowledge graph, as charted in the State of Harness reports.
Maintained by · 1
- Piebald-AIOrganisation
Built on · 1
- Claude CodeProject
Sources
Verified Oct 29, 2026