38.3%

of 413 commits were committed by an AI agent — a floor, not an estimate

38.3% agent · top contributor 27.2%26 contributors

org-wide

Adoption is broad. Many contributors are committing agent-authored work, which is what a real organisational rollout looks like.

158

agent commits

255

human commits

agent contributors

27.2%

largest contributor

Assisted or autonomous

152assisted

6autonomous

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

May26

Jun26

Jul26

Aug26

Sep26

Peak month: 74.1%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code	Anthropic	104	25.2%
GitHub Copilot	GitHub	46	11.1%
Devin	Cognition	6	1.5%
Cursor Agent	Anysphere	2	0.5%

Verify it yourself

Sample commits that matched. Every one links to GitHub — check the trailers.

1694a96ffeat(minimax): add MiniMax-M3 default and model-aware thinking (#190)Claude Code
3c8873f0sleep: confine per-skill adoption to the staged skills roots (#241)Claude Code
a33e56d1fix(sleep): skip assistant.message events with non-dict data (#232)Claude Code
f24e8ae5chore: configure monthly Dependabot updates (#261)GitHub Copilot
9eb77397feat(model): report copilot_chat call counts in the token summaryGitHub Copilot
a94d115ddocs(model): list copilot_chat in the chat_target error messagesGitHub Copilot
0a816f95feat(sleep): stage one proposal and manifest row per skillDevin
8e78ba0efeat(sleep): report per-skill-group gate decisionsDevin
cbaf6a39feat(sleep): consolidate skill groups independently with failure isolationDevin
5f8e85c6fix(sleep): keep all-test batches out of consolidate train/valCursor Agent
2532043dfix(claude): use --effort instead of deprecated --thinking flagCursor Agent

What was excluded

Commits in window	531
Merge commits removed	−117
CI / dependency bots removed	−1
Considered	413

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 microsoft/SkillOpt

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