Show HN: Buildermark – See how much code is by your agents (open source, local)
Source: HackerNews AI Launches
Sentiment: POSITIVE — Score: 100/100
Published: 2026-04-12T19:19:18.000Z
I made Buildermark to see exactly how much of my code is generated by my coding agents vs what I was writing by hand. For this project, it ended up being 364 agent conversations writing 94% of the code. Browse all of those here: https://demo.buildermark.dev/projects/u020uhEFtuWwPei6z6nbNIt matches edits by your coding agents (scans history in `~/.claude`, '`/.codex', etc.) with git commit diffs. It does formatting-agnostic matching to be robust against auto-formatting and reorganizing code. It's open source and local only, not even any analytics.Everything is automatic... just run the app, open the localhost:55022 frontend, and choose the project to import.It supports Claude Code, Codex, Gemini, and Cursor, so far. There's also a browser extension to import from cloud agents.https://buildermark.devhttps://github.com/gelatinousdevelopment/buildermarkI'm also working on a Team Server to aggregate results and make the project sustainable. Comments URL: https://news.ycombinator.com/item?id...
Original article: https://buildermark.dev