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: 44.6%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 46 | 13.3% |
| Cursor Agent | Anysphere | 3 | 0.9% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
80610d88fix(ui): open FloatingGenerateBox selects upward to prevent clipping (fixeClaude Code1ba935e8fix(export): disambiguate export filenames with generation id (#956)Claude Code6a6f4643fix(backend): guard avatar upload against a missing filename (#954)Claude Code30db291bfix(kokoro): add missing male Mandarin voices (#788)Cursor Agentcabef1bffix(docker): add ROCm GPU support via compose overlay (#630)Cursor Agent0be7975dfix: handle non-ASCII filenames in Content-Disposition headersCursor Agent
What was excluded
| Commits in window | 409 |
| Merge commits removed | −63 |
| CI / dependency bots removed | −0 |
| Considered | 346 |
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 jamiepine/voicebox