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: 55.3%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 66 | 20.1% |
| GitHub Copilot | GitHub | 3 | 0.9% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
235f24ebRename `Ui::id` to `Ui::scope_id` and clarify its docstring (#8542)Claude Code4df4cda4Add `Context::root_ui` and `Context::run_pass` (#8535)Claude Code5270bc17Add `CompletionPopup`: a code completion popup over `TextEdit` (#8529)Claude Codeeac51da9Add `LayoutJob::format_at_byte` (#8244)GitHub Copilotbcfb5bf4Refactor `Panel`s (#8174)GitHub Copilot2be6e225Add `ViewportInfo::occluded` and `visible` (#7948)GitHub Copilot
What was excluded
| Commits in window | 329 |
| Merge commits removed | −0 |
| CI / dependency bots removed | −0 |
| Considered | 329 |
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 emilk/egui