AI BriefingPrompt Timeline
Key point
Turned Anthropic's Claude system prompt history into something you can browse like git.
Details
When Anthropic released the public history of system prompts for Claude chat as Markdown, it was restructured so it could be browsed like a git timeline.
Using Claude Code, the single document was split into separate files by model, model family, and revision, with fake git commit dates attached so the flow of changes could be followed in GitHub's commit view.
This approach made the following tasks easier:
- Tracing prompt evolution with
git log - Comparing differences between versions with
diff - Pinpointing when specific changes occurred with
blame
Changes could be tracked by date and version without manual parsing, and this tool was also used to summarize the differences between Claude Opus 4.6 and 4.7.
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