58.5%

of 53 commits were committed by an AI agent — a floor, not an estimate

Too little recent activity to publish. Only 53 commits landed in this window, so the percentage is noisy. Repositories below 100 are excluded from the index for this reason.

58.5% agent · top contributor 71%3 contributors

individual

One person is driving this. The headline number reflects a single contributor's workflow, not a project-wide shift.

agent commits

human commits

agent contributors

71%

largest contributor

Assisted or autonomous

9assisted

22autonomous

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

May26

Jun26

Jul26

Aug26

Sep26

Peak month: 87.5%. Bars are scaled to that peak, not to 100%.

Which agents

GitHub Copilot	GitHub	30	56.6%
Claude Code	Anthropic	1	1.9%

Verify it yourself

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

08ce9be8ci: bump Node.js to 22 in code-quality workflowGitHub Copilot
eeba3e39Initial planGitHub Copilot
18bf9530fix: harden changed-file URL tracking workflow stepGitHub Copilot
168084c3docs: fix grammar and typos in lesson READMEsClaude Code

What was excluded

Commits in window	442
Merge commits removed	−130
CI / dependency bots removed	−259
Considered	53

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 microsoft/generative-ai-for-beginners

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