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: 36.4%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 9 | 6.4% |
| GitHub Copilot | GitHub | 4 | 2.9% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
827f487cFix index out of range panic when Run is given no argumentsClaude Code8294cc82Fix nil pointer dereference for interface-typed flag valuesClaude Code80f26253test: explain why completionShells is mutated in completion error testsClaude Codef5d08844Restore docs/go.mod and docs/go.sum (#5)GitHub Copilotd895eca4Remove docs/go.mod and docs/go.sum (not relevant to PR)GitHub Copilotd6047e03fix(test): set HideHelpCommand on leaf subcommand to properly validate fixGitHub Copilot
What was excluded
| Commits in window | 274 |
| Merge commits removed | −117 |
| CI / dependency bots removed | −17 |
| Considered | 140 |
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 urfave/cli