How much of your code is written by agents?

Buildermark matches your coding agent diffs with commits to calculate how much is by agents.

Open source. Runs natively on macOS, Windows, and Linux.

Track the percentage of your commits that is written with AI coding agents.

Rate your coding agent conversations manually or let the agent rate and log feedback.

Compare how different coding agents perform in your projects.

No analytics.

Your data stays on your machine.

The only network request is checking for updates.

Import conversations
Automatically import chat history from your coding agents (Claude Code, Codex, and more). Add shared folder paths to import from VMs and containers.
Import commits
Automatically import your relevant git commit history.
Match diffs
Buildermark matches conversation diffs to commit diffs to determine agent-written code. This is done with a formatting-agnostic matching system to be robust against auto-formatting and reorganizing.

A local app container manages a Go server on localhost. The Go server serves the web UI at http://localhost:55022. No cloud. No accounts.

Desktop apps

Browser extensions

Import from cloud-based agents

See agent attribution for each commit immediately in your native notification center.

A paid, self-hosted server for teams who want to aggregate Buildermark data across developers. See AI code metrics for your whole org.