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: 93.8%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 111 | 73% |
| Gemini CLI | 7 | 4.6% | |
| GitHub Copilot | GitHub | 3 | 2% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
23b249ebci: use afc163/surge-preview with all features for PR preview (#11862)Claude Code9500a528fix: restore missing indentation in package.json devDependencies (#11855)Claude Codea4d91e49test: add core page test coverage (#11847)Claude Code979ebcbedocs: update links (#11740)Gemini CLI289ec388docs: add CLAUDE.md and AGENTS.md for AI coding agent guidance (#11727)Gemini CLI9b2bbefffeat: 在右上角头像菜单添加历史版本链接 (#11725)Gemini CLI076fd6ffchore: replace flag emojis with text labels in README language switcher (#GitHub Copilotc15f0a12docs: add /pro-upgrade and /antd skill usage instructions (#11810)GitHub Copiloted302d60chore: migrate maintain-one-comment to backup repo pinned to commit SHA (#GitHub Copilot
What was excluded
| Commits in window | 209 |
| Merge commits removed | −5 |
| CI / dependency bots removed | −52 |
| Considered | 152 |
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 ant-design/ant-design-pro