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: 14.2%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 27 | 7.3% |
| Cursor Agent | Anysphere | 3 | 0.8% |
| GitHub Copilot | GitHub | 1 | 0.3% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
cdd7355bfeat: add opt-in AIA certificate chain fetching (tlsAIAFetch) (#6137)Claude Code44a61674ci: switch to grafana/k6-ci hosted golangci-lint config (#6380)Claude Codef069f135fix(httpext): classify HTTP/2 errors and negotiate h2 correctly under Go 1Claude Code77f7cba2Update web vitals v5 and remove fid (#5661)Cursor Agentd1d28666Fix browser connection goroutine leaks in tests (#5647)Cursor Agentd001734eFix browser test goroutine leak on cleanup (#5643)Cursor Agent124d21f4[refactor] Add cloud secret-source by default (#5875)GitHub Copilot
What was excluded
| Commits in window | 532 |
| Merge commits removed | −33 |
| CI / dependency bots removed | −128 |
| Considered | 371 |
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 grafana/k6