One person is driving this. The headline number reflects a single contributor's workflow, not a project-wide shift.
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: 8.7%. Bars are scaled to that peak, not to 100%.
Which agents
| GitHub Copilot | GitHub | 5 | 3.3% |
| Claude Code | Anthropic | 1 | 0.7% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
21d835c0docs: use npm i instead of npm install in installation commandsGitHub Copilot0a45bb28docs: fix installation commands, remove incorrect -D flag from naive-ui anGitHub Copiloteb3294c5Initial planGitHub Copilot63913cabfix(input-otp): distribute multi-character input across fields for browserClaude Code
What was excluded
| Commits in window | 156 |
| Merge commits removed | −6 |
| CI / dependency bots removed | −0 |
| Considered | 150 |
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 tusen-ai/naive-ui