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: 34.9%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 58 | 8.3% |
| Cursor Agent | Anysphere | 8 | 1.1% |
| GitHub Copilot | GitHub | 1 | 0.1% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
c731fe81fix(cli): honor III_URL in iii trigger (#2167)Claude Codef89353ed(MOT-4712) feat(project): `iii project init --learn-iii` and a tour promptClaude Codebb2ee50efix(compose): let III_URL select the engine, as --engine does (#2173)Claude Code7c02c080fix(rust-sdk): drop duplicate registration frames on first WS connect (#16Cursor Agenteab90a2fIii docs migration (#1233)Cursor Agent49bcd5fbfeat: rename api() helper to http(), deprecate api() (#1161)Cursor Agenteab90a2fIii docs migration (#1233)GitHub Copilot
What was excluded
| Commits in window | 882 |
| Merge commits removed | −0 |
| CI / dependency bots removed | −183 |
| Considered | 699 |
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 iii-hq/iii