Claude Code System Prompts (Piebald)
Prompt LibraryVersion-by-version teardown of Claude Code's system prompts and 27 built-in tool descriptions, updated with every release.
- system-prompt
- claude-code
- analysis
- prompt-engineering
Reverse-engineered system prompts from production AI tools — for prompt engineering research.
x1xhlol's curated collection of system prompts recovered from production AI tools — coding assistants, image generators, voice agents, productivity apps. Complementary to CL4R1T4S but with a different angle: focus on production-grade system prompts rather than research experiments.
For prompt engineers studying real production system prompts — how tools are described, how guardrails are phrased — to inform their own prompt design.
Browse or clone the repository — it's a document collection, not software.
Contents are unofficial, community-extracted material — accuracy and currency are not guaranteed; treat as reference, not ground truth.
Charted
Version-by-version teardown of Claude Code's system prompts and 27 built-in tool descriptions, updated with every release.
A single-file CLAUDE.md distilling Karpathy's coding observations into four working rules (211k stars).
The de-facto standard ChatGPT role-prompt collection (f.k.a. Awesome ChatGPT Prompts).