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: 33.3%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 5 | 1.8% |
| GitHub Copilot | GitHub | 2 | 0.7% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
91031344fix: Ignore stored list params in PrevNextButtons when storeKey is falseClaude Code1e62662ffix: Declare ra.validation.unique in TranslationMessagesClaude Codee2279909test: Use FilterSelectedOptionsFalse story in AutocompleteInput specClaude Code7f01cb32Update docs_headless Astro integrations for v6GitHub Copilot15c6b39cFix docs_headless dependencies for Astro 6GitHub Copilot
What was excluded
| Commits in window | 511 |
| Merge commits removed | −166 |
| CI / dependency bots removed | −74 |
| Considered | 271 |
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 marmelab/react-admin