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: 8.6%. Bars are scaled to that peak, not to 100%.
Which agents
| GitHub Copilot | GitHub | 7 | 2.5% |
| Claude Code | Anthropic | 2 | 0.7% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
712e0237fix(interceptors): trim trailing ejected handlers (#11087)GitHub Copilot800504c6docs: apply v1.19.0 release updates (#11101)GitHub Copilote64bcf9cchore(deps): merge branch 'v1.x' into tests/module/cjs (#11014)GitHub Copilot6bb12c19fix: custom auth headers not stripped on cross-origin redirects (#10892)Claude Codef2dc4495fix(parseProtocol): fix regex to require colon in protocol separator (#107Claude Code
What was excluded
| Commits in window | 370 |
| Merge commits removed | −0 |
| CI / dependency bots removed | −89 |
| Considered | 281 |
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 axios/axios