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.
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.
Supported agents
Every agent you use.
- Claude Code CLI
- Claude Code Cloud
- Codex CLI
- Codex Cloud
- Gemini CLI
- Cursor
Missing one? File a request →
Local-first
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
01
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.
02
Auto-import commits
Your git history loads automatically. Nothing leaves your machine.
03
Auto-match diffs
A formatting-agnostic matcher aligns conversation diffs to commit diffs — robust against auto-formatters, reorderings, and line-ending noise.
Native notifications
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
ChromeFirefoxSafari
For importing from cloud-based agents
Architecture
A local app container runs a Go server on localhost that serves the web UI. No cloud.
No accounts. No sync.
Coming soon
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.