5.5%

of 3,318 commits were committed by an AI agent — a floor, not an estimate

5.5% agent · top contributor 66.7%17 contributors

team

A small group is using agents. Adoption has spread beyond one person but is not project-wide.

183

agent commits

3,135

human commits

agent contributors

66.7%

largest contributor

Assisted or autonomous

183assisted

0autonomous

Assisted — a developer’s identity authored the commit and the agent added itself as co-author. The agent ran git commit during a working session, with a person there. Autonomous — a bot identity is the author, no human in the loop. Across the whole index, 93.7% of agent commits are assisted.

Agent share by month

Feb26

Mar26

Apr26

May26

Jun26

Jul26

Aug26

Sep26

Peak month: 64.6%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code

Anthropic

183

5.5%

Verify it yourself

Sample commits that matched. Every one links to GitHub — check the trailers.

d2654d34fs: writeFile with flag "a+" overwrites from offset 0 on Windows (#39355)Claude Code
7c49f0d5node:inspector: implement Profiler precise coverage and inspector.open() wClaude Code
08c5bc9ecss: scope animation-name to its @keyframes hash in CSS modules (#18921) (Claude Code

What was excluded

Commits in window	3,327
Merge commits removed	−1
CI / dependency bots removed	−8
Considered	3,318

Bots are excluded from the denominator entirely. Counting dependabot as “AI-written code” is the fastest way to produce a meaningless number.

How this was measured

Measured over February–August 2026, cloned directly. Detection is deterministic string matching against signatures agents write about themselves — no heuristics, no style analysis. Merge commits and CI bots are excluded from the denominator. The figure is a floor: squash merges strip trailers, so real usage is higher. Contributor counts are aggregate — no individual is named.

Run it yourself: npx qmmit-cli oven-sh/bun

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