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: 15.4%. Bars are scaled to that peak, not to 100%.
Which agents
| Cursor Agent | Anysphere | 3 | 2.2% |
| GitHub Copilot | GitHub | 3 | 2.2% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
1d790332[Copr] Add build status badge (#11940)Cursor Agent48fe061b[Buildbot] Add Buildbot build status badge (#11938)Cursor Agenta1b88293[Macports] Add MacPorts package version badge (#11936)Cursor Agentbd23e5fc[GitHub] Store accepted token scopes (#11915)GitHub Copilote89cc5a5refactor: replace route format with pattern for [Travis] (#11813)GitHub Copilote553542frefactor: replace 'format' with 'pattern' in deprecated example/test (#118GitHub Copilot
What was excluded
| Commits in window | 393 |
| Merge commits removed | −0 |
| CI / dependency bots removed | −259 |
| Considered | 134 |
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 badges/shields