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27.8%
of 449 commits were committed by an AI agent — a floor, not an estimate
27.8% agent · top contributor 55.2%6 contributors
team

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

125
agent commits
324
human commits
6
agent contributors
55.2%
largest contributor

Assisted or autonomous

125assisted
0autonomous

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

Jan26
Feb26
Mar26
Apr26
May26
Jun26
Jul26
Aug26

Peak month: 85.1%. Bars are scaled to that peak, not to 100%.

Which agents

Cursor AgentAnysphere12126.9%
Claude CodeAnthropic40.9%

Verify it yourself

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

  • 8c9b9fdbci: restrict release workflow permissions (#6095)Cursor Agent
  • 3cdbc773fix(addon-search): advance highlight scan by buffer match size (#5994)Cursor Agent
  • f57b8e15Update GitHub Actions to Node 24 compatible versions (#6007)Cursor Agent
  • 8961a72dSet autocomplete="off" on the helper textarea (#6057)Claude Code
  • ba7e775afix: move CSI fast-path into CLEAR action to eliminate non-CSI regressionClaude Code
  • 9f6c7d7cfix(addon-fit): remove redundant same-dimension guard in fit()Claude Code

What was excluded

Commits in window676
Merge commits removed−211
CI / dependency bots removed−16
Considered449

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 xtermjs/xterm.js

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