41.8%

of 517 commits were committed by an AI agent — a floor, not an estimate

41.8% agent · top contributor 12.5%41 contributors

org-wide

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

216

agent commits

301

human commits

agent contributors

12.5%

largest contributor

Assisted or autonomous

211assisted

5autonomous

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

Peak month: 52.7%. Bars are scaled to that peak, not to 100%.

Which agents

Devin	Cognition	200	38.7%
Claude Code	Anthropic	31	6%
Cursor Agent	Anysphere	3	0.6%
GitHub Copilot	GitHub	1	0.2%

Verify it yourself

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

88859e4efix: add deterministic tiebreaker to RR host selection algorithm (#28783)Devin
a1587f28fix(docs): pass missing sourceCode prop to Wrapper component (#28901)Devin
ab21c7f8refactor: Cal.diy (#28903)Devin
8418db70feat: add Clara app (link-as-an-app, AI & Automation) (#29819)Claude Code
a46d5f8ddocs(claude): add path-scoped frontmatter to four agent rules (#29612)Claude Code
ebf696a9fix: remove console.log and improve type safety in tRPC routers (#29529)Claude Code
bc9a9c0cfix: Organised the OOO page (#27865)Cursor Agent
83354fbefix(readme): correct 'therefor' typo to 'therefore' (#27816)Cursor Agent
66fc0465fix: Form Builder Name Field Shows Default Label When Custom Label is EmptCursor Agent
ff184db5fix: correct Arabic translation of upload/download terms (#29226)GitHub Copilot

What was excluded

Commits in window	520
Merge commits removed	−0
CI / dependency bots removed	−3
Considered	517

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 calcom/cal.com

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