How much of your code is written by agents?

Buildermark matches your coding agent logs with git commits to attribute every line — local and open source.

No workflow changes. No agent hooks.

A measurement layer for coding agents.

Agent attribution

Track the exact percentage of each commit that was written by an AI coding agent — no reliance on agent hooks, no manual tagging.

Conversation ratings

Rate agent conversations manually, or let the agent log its own critique with the /rate-buildermark skill.

Agent benchmarking

Compare how Claude, Codex, Gemini, and Cursor perform on your actual codebase.

Every agent you use.

Claude Code CLI
Claude Code Cloud
Codex CLI
Codex Cloud
Gemini CLI
Cursor

Your data never leaves your machine.

✓Zero analytics, zero telemetry
✓Runs entirely on localhost:55022
✓MIT licensed, audit-friendly
✓Only outbound request: checking for updates

Fully Automatic

Auto-import conversations

Chat history from Claude Code, Codex, Gemini, and friends is imported automatically. Add shared folder paths to pull from VMs and containers.

Auto-import commits

Your git history loads automatically. Nothing leaves your machine.

Auto-match diffs

A formatting-agnostic matcher aligns conversation diffs to commit diffs — robust against auto-formatters, reorderings, and line-ending noise.

Attribution in your notification center, the moment you commit.

See agent percentage for each commit immediately — no dashboard required. Works across macOS, Windows, and Linux.

Desktop apps

macOS 15+
Windows 10+
Linux CLI

Browser extensions

Chrome
Firefox
Safari

Architecture

A local app container runs a Go server on localhost that serves the web UI. No cloud. No accounts. No sync.

Team Server. Aggregate. Compare. Compete.

A self-hosted server that rolls Buildermark metrics up across your whole org. See who's shipping with agents, which projects adopt fastest, and how your dev process is changing — all on your own infrastructure.