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Buildermark

Buildermark

Measure how much of your code is AI-generated. Open source.

Overview

What it is

Measure how much of your code is AI-generated. Buildermark matches your coding agent diffs with commits to calculate how much is by agents. Open source. Runs natively on macOS, Windows, and Linux.

Intent

I need it when

Compare performance of different AI coding models on their actual codebase

Buildermark supports agent benchmarking across Claude, Codex, Gemini, and Cursor, allowing developers to see which models perform best on their specific projects

Aggregate AI code metrics across an entire development team

Buildermark's upcoming Team Server enables self-hosted aggregation of metrics across the organization, allowing comparison of agent adoption rates and developer productivity changes

Measure and track what percentage of code commits are generated by AI coding agents

Buildermark automatically matches agent conversation logs with git commits to attribute every line of code to AI agents, providing exact percentages per commit without requiring agent hooks or manual tagging

Rate and evaluate the quality of AI agent conversations and outputs

Buildermark allows manual conversation ratings or automatic agent self-critique via the /rate-buildermark skill, enabling quality assessment of agent-generated code

Maintain code privacy while analyzing AI-generated code contributions

Buildermark runs entirely locally on the user's machine with zero telemetry, ensuring proprietary code never leaves their infrastructure while still providing attribution metrics

Drop

Not a fit when

  • User needs cloud-based code analysis without local infrastructure setup
  • User requires real-time team collaboration features without self-hosting a server
  • User works exclusively with non-AI-generated code and has no need for agent attribution tracking
  • User needs support for coding agents beyond Claude, Codex, Gemini, and Cursor
  • User operates on macOS versions older than Sequoia (15) or Windows versions older than Windows 10
Commercials

Pricing

Free open-source tool with optional paid Team Server for enterprise aggregation