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: 86.2%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 314 | 55.8% |
| Cursor Agent | Anysphere | 2 | 0.4% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
ed37ab13daily triage 2026-09-15: shrink compound-word corruption, win32 junction fClaude Code4df4b03bchore(release): cut @caveman-ai/cli 1.3.4 on the bin-v1.1.7 runtimeClaude Code8b0c1d36chore(release): v2.7.0Claude Code1b7ff8fafix(proxy): scope repo intelligence to project source and require direct eCursor Agent902eba34fix: opencode .jsonc config, plugin agent discovery, shrink nested descripCursor Agent
What was excluded
| Commits in window | 672 |
| Merge commits removed | −84 |
| CI / dependency bots removed | −25 |
| Considered | 563 |
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 JuliusBrussee/caveman