Open-source agent skill turns PRs into zoomable code maps, with git-verified snippets to block hallucinations
SeanOliver · x · 2026-10-09
Developer SeanOliver open-sourced code-guide, an agent skill (with Claude Code and Codex plugins) that turns any pull request into a zoomable HTML map: zoom out to see what changed and how files connect, zoom in for full code, crisp callouts, and a clean merged diff.
Key anti-hallucination design:
- The model outputs only a JSON spec containing a snippet from every line it references
- A build script verifies each snippet against git — no matches or multiple matches means the build fails
Usage is one prompt: "Make a code guide for PR #11" returns a single HTML file. MIT-licensed, and especially useful for reviewing agent-written PRs.
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