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: 49%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 77 | 35.6% |
| Devin | Cognition | 1 | 0.5% |
| Cursor Agent | Anysphere | 1 | 0.5% |
| GitHub Copilot | GitHub | 1 | 0.5% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
974d940adocs: put daily, weekly and monthly Trendshift badges in one row (#803)Claude Code7e81f61edocs: add Trendshift monthly ranking badge (#802)Claude Code01b1cd88docs: add Trendshift badge to READMEs (#801)Claude Code7790c37bAdd Devin CLI plugin manifest (#318)Devinf02f9424fix: use python3 for correctness checks and add CI (#50)Cursor Agentc1c80f3cAdding support for Copilot Marketplace plugin (#47)GitHub Copilot
What was excluded
| Commits in window | 224 |
| Merge commits removed | −8 |
| CI / dependency bots removed | −0 |
| Considered | 216 |
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 DietrichGebert/ponytail