The library

Every prompt, annotated

Real, published system prompts from shipping AI products — each with source attribution and notes on what makes it work.

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Claude Code

agent prompt

Claude Code 2.0.0 — Full System Prompt & Tool Suite

The complete shipped system prompt for Claude Code v2.0.0 (Sonnet 4.5), bundled with its full tool catalog. It defines a terse CLI software-engineerin…

role definition tool-use protocol few-shot

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