9.2%

of 3,353 commits were committed by an AI agent — a floor, not an estimate

9.2% agent · top contributor 37.4%49 contributors

org-wide

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

310

agent commits

3,043

human commits

agent contributors

37.4%

largest contributor

Assisted or autonomous

296assisted

14autonomous

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

Apr26

May26

Jun26

Jul26

Aug26

Sep26

Peak month: 13%. Bars are scaled to that peak, not to 100%.

Which agents

Cursor Agent	Anysphere	192	5.7%
Claude Code	Anthropic	107	3.2%
OpenAI Codex	OpenAI	9	0.3%
Devin	Cognition	1	0%
GitHub Copilot	GitHub	1	0%

Verify it yourself

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

21879498fix(web): clear Design Browser caches when deleting a project (#6354)Cursor Agent
098c5951fix(web): keep browser assist guidance in context (#5423)Cursor Agent
6426847ffix(web): separate run success from result delivery (#5525)Cursor Agent
07170f8dfix(release): track in-place re-runs in the prerelease card (#7950)Claude Code
34ac405bfix(release): gate the Thursday patch cut on the previous patch, not the mClaude Code
fc959c7afix(web): give an invalid API key its own error card (#7893)Claude Code
e4ae67cafix(web): stop repeated AMR settings rescans (#3436)OpenAI Codex
f06063bafeat(cli): add MMS redesign workflow (#3311)OpenAI Codex
b73e7974skills: add reference design contract (#3321)OpenAI Codex
f5235aa4fix(packaged): widen macOS sidecar status timeout to 90s for 0.18.1 cold sDevin
33d59ebbClarify OpenCode reasoning support and avoid unsupported reasoning argv (#GitHub Copilot

What was excluded

Commits in window	3,638
Merge commits removed	−39
CI / dependency bots removed	−246
Considered	3,353

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 nexu-io/open-design

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