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Diff of Claude Code system prompt over time

lukegil.github.io

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Diff of Claude Code system prompt over time

#1

Post by lukegil626 » Wed, Dec 03, 2025, 4:16 PM UTC

Diff of Claude Code system prompt over time
lukegil.github.io

Re: Diff of Claude Code system prompt over time

#2

Post by lukegil626 » Wed, Dec 03, 2025, 4:16 PM UTC

I grabbed the basic system message sent by Claude Code for (basically) all versions since 0.2.9. It's in a Github PR-style viewer.

Scripts to grab it yourself here: https://github.com/lukegil/claude-code-prompts

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