A small group is using agents. Adoption has spread beyond one person but is not project-wide.
Assisted or autonomous
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
Peak month: 26.9%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 81 | 6.7% |
| Cursor Agent | Anysphere | 9 | 0.7% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
d8580cafAdd OrcaRouter as a named LLM providerClaude Code69f69bb0skeleton hint: actionable data-driven wording; empty-page hint tells the mClaude Code5adce7bffix: gate skeleton-screen hint on in-flight network requestsClaude Codee1b450ddReplace 'Going to Production' with 'Use Claude' external linkCursor Agent13d7e36bdocs: rename navigation groups with OS suffixCursor Agentc5dd82bcdocs: switch primary theme accents to blueCursor Agent
What was excluded
| Commits in window | 1,800 |
| Merge commits removed | −589 |
| CI / dependency bots removed | −0 |
| Considered | 1,211 |
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 browser-use/browser-use