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0.5%
of 3,698 commits were committed by an AI agent — a floor, not an estimate
0.5% agent · top contributor 58.8%4 contributors
team

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

17
agent commits
3,681
human commits
4
agent contributors
58.8%
largest contributor

Assisted or autonomous

15assisted
2autonomous

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: 1.1%. Bars are scaled to that peak, not to 100%.

Which agents

GitHub CopilotGitHub80.2%
Claude CodeAnthropic50.1%
Cursor AgentAnysphere40.1%

Verify it yourself

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

  • 06da7773fix: add VS Code Copilot Chat deep links (#1198)GitHub Copilot
  • a045cdf1Fix dark mode favicon (#1183)GitHub Copilot
  • 887b3f3ffeat(home): replace industries grid with Open Source Friday video (#1170)GitHub Copilot
  • 9156ceceFix Docker bootstrap: supervisord socket not configuredClaude Code
  • c95f80ddfix: ReDoS prevention + bound slugify fallback scanClaude Code
  • 0e9258c3fix: parseBody uses byte-accurate size check and returns 413Claude Code
  • 6028f3f0Add Neon as sponsor and recommended database (#1192)Cursor Agent
  • 417eb950fix(ci): unblock CI lint by allowing any in OIDC/OAuth test filesCursor Agent
  • 7e2fa610feat(about): add John Phamous, add Security section with Mehmet InceCursor Agent

What was excluded

Commits in window3,730
Merge commits removed−32
CI / dependency bots removed−0
Considered3,698

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 f/prompts.chat

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