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: 16.7%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 29 | 2.9% |
| Cursor Agent | Anysphere | 20 | 2% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
c5b17ba6ci: PLT-1272: Resolve gitleaks version with an authenticated API call (#99Claude Code59333d58docs: add Dashboards for projects to LSE 2.36.0 release notes (#9936)Claude Coded128fb76feat: UTC-1260: Payments: Manual batchesClaude Code13f981a6docs: UTC-1171: Document full and flexible pauses (#9929)Cursor Agent6db5e731docs: UTC-1188: Release new annotator evaluation metric to GA and update dCursor Agent1a99b9d6docs: fix export disable env var in 2.34 notes (#9833)Cursor Agent
What was excluded
| Commits in window | 1,120 |
| Merge commits removed | −0 |
| CI / dependency bots removed | −125 |
| Considered | 995 |
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 HumanSignal/label-studio