Adoption is broad. Many contributors are committing agent-authored work, which is what a real organisational rollout looks like.
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: 20.5%. Bars are scaled to that peak, not to 100%.
Which agents
| GitHub Copilot | GitHub | 30 | 5.7% |
| Claude Code | Anthropic | 18 | 3.4% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
99e9ce74fix(ui): fix button alignment (#10285)GitHub Copilot6469a6eaApply runner filters to requests/iterations as well as tests [INS-3348] (#GitHub Copilot490aa9b9feat(Git Sync): Git projects can live anywhere on disk (#10155)GitHub Copilotebb3719etest: mitigate sidebar-focus-onboarding flaky timeout with reload fallbackClaude Code51015127fix(cloud-sync): surface stale/reverted staged changes instead of silentlyClaude Codeb4c36a39feat(templating): (H1) route user-plugin request hooks through the sandboxClaude Code
What was excluded
| Commits in window | 534 |
| Merge commits removed | −8 |
| CI / dependency bots removed | −0 |
| Considered | 526 |
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 Kong/insomnia