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: 75.9%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 89 | 46.4% |
| Gemini CLI | 3 | 1.6% | |
| GitHub Copilot | GitHub | 1 | 0.5% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
efdab932feat(service-worker): standalone service worker runtime (#6022)Claude Code8d7f6c78feat(tegg): declarative module plugin mechanism (#6021)Claude Code2a60d3b3fix(controller): register middlewareGraphHook before global graph build (#Claude Code9599ff39chore: update oxfmt (#5892)Gemini CLIbc1a0f7afix(scripts): findNodeProcess compatible busybox ps command (#5874)Gemini CLIf9b94d65docs: add @eggjs/mock and mm documentation (#5789)Gemini CLI3ec81059feat(egg-bin): support vitest threads pool mode (#5816)GitHub Copilot
What was excluded
| Commits in window | 194 |
| Merge commits removed | −2 |
| CI / dependency bots removed | −0 |
| Considered | 192 |
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 eggjs/egg