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25.5%
of 1,382 commits were committed by an AI agent — a floor, not an estimate
25.5% agent · top contributor 35.1%17 contributors
org-wide

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

353
agent commits
1,029
human commits
17
agent contributors
35.1%
largest contributor

Assisted or autonomous

352assisted
1autonomous

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: 63.6%. Bars are scaled to that peak, not to 100%.

Which agents

Claude CodeAnthropic26519.2%
Cursor AgentAnysphere1259%
GitHub CopilotGitHub40.3%

Verify it yourself

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

  • bd50e565Fix British spelling in documentation (#13466)Claude Code
  • f3b0ee82docs: clarify when afterSetDataAtCell and afterSetDataAtRowProp fire (#134Claude Code
  • 24c01d6fDocs: publish /docs/llms.txt + llms-full.txt and serve agent files as textClaude Code
  • 8dffb315DEV-2915: Replace A1/B1 placeholder data in docs examples (#13491)Cursor Agent
  • e7fe6c3cDEV-406: Refill the rendered row band when the measured rows shrink duringCursor Agent
  • 8d4a0186Bump Playwright to 1.62.1 monorepo-wide (catalog + container image) (#1324Cursor Agent
  • 796d7be9Changes in README.md for dark theme logo (#12617)GitHub Copilot
  • 29e2b43ePRO-986: Remove numbro, moment, and pikaday dependencies; replace with natGitHub Copilot
  • a0a0ce67DEV-1821 - Angular StackBlitz examples broken (#12681)GitHub Copilot

What was excluded

Commits in window1,430
Merge commits removed−6
CI / dependency bots removed−42
Considered1,382

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 handsontable/handsontable

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