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microsoft/playwright ↗
3.6%
of 1,627 commits were committed by an AI agent — a floor, not an estimate
3.6% agent · top contributor 56.9%12 contributors
team

A small group is using agents. Adoption has spread beyond one person but is not project-wide.

58
agent commits
1,569
human commits
12
agent contributors
56.9%
largest contributor

Assisted or autonomous

47assisted
11autonomous

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: 12.1%. Bars are scaled to that peak, not to 100%.

Which agents

GitHub CopilotGitHub513.1%
Claude CodeAnthropic50.3%
Cursor AgentAnysphere20.1%

Verify it yourself

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

  • 1ea94e9cdocs(test): document mouse-outside-viewport screenshot helper (#42446)GitHub Copilot
  • e51e5b5atest(connect): unblock hung launchServer teardown with SIGKILL fallback (#GitHub Copilot
  • 6846dc7dtest(mcp): de-flake annotate screencast session switch startup (#42195)GitHub Copilot
  • 9e371c00feat(mcp): add --timeout-idle to close the browser after inactivity (#4266Claude Code
  • 92dcf5d3fix(reporter): honor NO_COLOR in list/line/dot reporters (#40903)Claude Code
  • 0aec507afix(mcp): handle page crash event in Tab constructor (#40426)Claude Code
  • ba0b817dfix(trace-viewer): label filter inputs and keyboard-accessible error sourcCursor Agent
  • 2ca42d22fix(playwright): remove dead package.json export subpaths (#41362)Cursor Agent

What was excluded

Commits in window1,830
Merge commits removed−0
CI / dependency bots removed−203
Considered1,627

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/playwright

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