Claude Code's full system prompt leaked: 7,832 lines, 128 tools, 44 skills on GitHub
udmrzn · x · 2026-11-16
Pliny's CL4R1T4S repo published Claude Code's complete system prompt (Fable 5.2) one day after release: 7,832 lines, 935K characters, 128 tools, 44 skills. The repo also collects system prompts from ChatGPT, Gemini and Grok, with 50K+ stars.
The poster highlights that much of an agent's "intelligence" is hand-written rules (when to act, when to ask humans, deletion guardrails), and that the prompt even scripts how the model denies seeing hidden inputs.
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