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: 0.5%. Bars are scaled to that peak, not to 100%.
Which agents
| Cursor Agent | Anysphere | 6 | 0.1% |
| Claude Code | Anthropic | 3 | 0.1% |
| GitHub Copilot | GitHub | 2 | 0% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
4af86741crimson: fix stack-use-after-return in ConfigProxy::parse_argvCursor Agent330c4137cephadm: warn when orch actions are deferred on unmanaged servicesCursor Agent4fe341c7qa/suites/orch/cephadm/smb: retry CTDB deleted-node check via workunitCursor Agent7b7aceb1rgw: add GCM hardware acceleration support via CryptoAccelClaude Codedfdbb84argw: add AES-256-GCM (AEAD) support for server-side encryptionClaude Code0d8a70b6test/rgw/notifications: migrate from nose to pytestClaude Code6d8851a2rgw: add tcmalloc heap profiler support via admin socketGitHub Copilotebb5d25dcopilot: add GitHub Copilot instructionsGitHub Copilot
What was excluded
| Commits in window | 6,704 |
| Merge commits removed | −2,217 |
| CI / dependency bots removed | −0 |
| Considered | 4,487 |
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 ceph/ceph