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: 4.9%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 22 | 1.8% |
| GitHub Copilot | GitHub | 2 | 0.2% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
5145c852fix: show profile pictures in OS notifications (#2584)Claude Code0ab644cbfeat: add fullscreen lightbox for game media carousel (#2571)Claude Codeda65662efeat: replace SSE with edge WebSockets (#2557)Claude Codebb816c03Feature/big picture beta (#2178)GitHub Copilotea1fe0f0Update src/main/events/library/get-game-by-object-id.tsGitHub Copilot
What was excluded
| Commits in window | 1,776 |
| Merge commits removed | −503 |
| CI / dependency bots removed | −26 |
| Considered | 1,247 |
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 hydralauncher/hydra