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: 16.4%. Bars are scaled to that peak, not to 100%.
Which agents
| GitHub Copilot | GitHub | 34 | 8.1% |
| Claude Code | Anthropic | 5 | 1.2% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
38238360integration: pin the execution ID contract on workflow work items (#10446)GitHub Copilot6cf57abaworkflow: allow meta watch on stalled workflow (#10428)GitHub Copiloteebd8123workflow: actors: drop blocking completion-waiter paths (#10396)GitHub Copilotf0ad546edocs: add v1.18.2 release note for IAM Roles Anywhere X.509 auth fix (#101Claude Code11015aeefix: remove availability zone requirement from AKS test clusters (#9840)Claude Code7bf9adbdSidecar Injector supports Native Sidecars (#9450)Claude Code
What was excluded
| Commits in window | 444 |
| Merge commits removed | −19 |
| CI / dependency bots removed | −6 |
| Considered | 419 |
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 dapr/dapr