firstcontributions/first-contributions ↗

0.6%

of 11,894 commits were committed by an AI agent — a floor, not an estimate

0.6% agent · top contributor 17.3%62 contributors

org-wide

Adoption is broad. Many contributors are committing agent-authored work, which is what a real organisational rollout looks like.

agent commits

11,819

human commits

agent contributors

17.3%

largest contributor

Assisted or autonomous

75assisted

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: 4.1%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code	Anthropic	67	0.6%
Cursor Agent	Anysphere	5	0%
GitHub Copilot	GitHub	2	0%
Gemini CLI	Google	1	0%

Verify it yourself

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

31c6b43eAdd Bruna Codima to Contributors list (#124903)Claude Code
a5228da5Add kiyurao to Contributors.md (#124878)Claude Code
7102f065Add NegroMontes to Contributors.md (#124877)Claude Code
298692a6Add Raphael Karani to contributors list (#122696)Cursor Agent
3419c2a5Add Tom Goldberg to Contributors list (#122148)Cursor Agent
4e204785Add yiziff to Contributors list (#121257)Cursor Agent
b8ddc013Add Shaan Saurav to Contributors list (#117158)GitHub Copilot
d69e1b2dAdd Karan Rohra to Contributors list (#116134)GitHub Copilot
54e15ddcUpdate Contributors.md (#115902)Gemini CLI

What was excluded

Commits in window	15,036
Merge commits removed	−3,141
CI / dependency bots removed	−1
Considered	11,894

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 firstcontributions/first-contributions

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