Adoption is broad. Many contributors are committing agent-authored work, which is what a real organisational rollout looks like.
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: 14.9%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 28 | 12.8% |
| Cursor Agent | Anysphere | 3 | 1.4% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
81d808d5fix(container): metadata values are prose until a naming key says otherwisClaude Code1d92aaebfix: address CodeRabbit review on the skills/plugin/hook PRClaude Code3de829c4fix: honour JPEG marker fill bytes, and share one segment walkerClaude Coded9e9590ddocs: list DropMarks in the Ecosystem chapter (#323)Cursor Agent1f95c548fix: preserve multilingual Unicode during text cleanup (#34)Cursor Agent8d79155afeat: add a lightweight Cursor text skill (#35)Cursor Agent
What was excluded
| Commits in window | 290 |
| Merge commits removed | −55 |
| CI / dependency bots removed | −16 |
| Considered | 219 |
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 guillaumemeyer/watermarks-remover