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: 38.5%. Bars are scaled to that peak, not to 100%.
Which agents
| Cursor Agent | Anysphere | 44 | 10.7% |
| Claude Code | Anthropic | 26 | 6.3% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
c1ed16d9Add companion identifier APIs to ontology-term-resolution (#262)Cursor Agenteef7c207Add RegulomeDB and live VEP/CADD traps to database-lookup (#264)Cursor Agentea2c9f0fAdd companion literature APIs to paper-lookup (#263)Cursor Agent515742b7Revert "chore: post-merge follow-ups for #252"Claude Codeca2620dbgenomic-intelligence: annotation sync limit and the splice orientation cheClaude Code45af7aefgenomic-intelligence: reconcile the skill against the live /v1 contract (1Claude Code
What was excluded
| Commits in window | 496 |
| Merge commits removed | −56 |
| CI / dependency bots removed | −29 |
| Considered | 411 |
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 K-Dense-AI/scientific-agent-skills