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: 10%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 4 | 2.5% |
| GitHub Copilot | GitHub | 2 | 1.3% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
c6e66edefeat(mix): complete only test and script files for `test` and `run` (#1102Claude Codecd320b55feat(kubectl): add kcrc alias for config rename-context (#14087)Claude Code129de5a0docs(kubectl): fix krsss description to say statefulset (#14083)Claude Code99aaf58dfix(codex): redirect stdin from /dev/null in background completion generatGitHub Copilota4ee4daffix(tmux): treat xterm-direct as 256-color (#13700)GitHub Copilot
What was excluded
| Commits in window | 236 |
| Merge commits removed | −0 |
| CI / dependency bots removed | −77 |
| Considered | 159 |
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 ohmyzsh/ohmyzsh