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: 50%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 23 | 5.7% |
| GitHub Copilot | GitHub | 7 | 1.7% |
| Cursor Agent | Anysphere | 3 | 0.7% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
8981a9dafix(microservices): always run the kafka processing end hook (#17766)Claude Codef76e96f9chore(deps): sync package-lock.json with package.json (#17764)Claude Code2e353fa2chore: let renovate resolve the lockfile with legacy peer deps (#17765)Claude Code917aec5bfix(microservices): call RMQ listen callback once (#17675)GitHub Copilota3a31b96refactor: use Object.hasOwnGitHub Copilot4fbd6e62Potential fix for pull request findingGitHub Copilotb76c889etest(core): add forroot/forfeature resolution integration testCursor Agenteccf5b25fix(core): stop import lookup after first direct export matchCursor Agentfb4d3e70fix(common): include field paths in standard schema validation errorsCursor Agent
What was excluded
| Commits in window | 1,923 |
| Merge commits removed | −811 |
| CI / dependency bots removed | −707 |
| Considered | 405 |
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 nestjs/nest