10.9%

of 2,263 commits were committed by an AI agent — a floor, not an estimate

10.9% agent · top contributor 22.8%38 contributors

org-wide

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

246

agent commits

2,017

human commits

agent contributors

22.8%

largest contributor

Assisted or autonomous

244assisted

2autonomous

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

Feb26

Mar26

Apr26

May26

Jun26

Jul26

Aug26

Sep26

Peak month: 26.1%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code	Anthropic	162	7.2%
GitHub Copilot	GitHub	86	3.8%
Cursor Agent	Anysphere	6	0.3%

Verify it yourself

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

10ae5c1dRename AI tasks settings to AI and add Model Context Protocol card (#53906Claude Code
a9d7712fLoad the base map through core's tile proxy (#53845)Claude Code
9f7c353aGroup the connectivity panels behind a Connectivity settings page (#53905)Claude Code
5513abbeCheck if failed import is from us, or from user, and check if chunck 404'sGitHub Copilot
a9862a8fClarify what uninstalling an app deletes (#53923)GitHub Copilot
497b7fceAdd offline devices count to Matter (#53949)GitHub Copilot
f2a049b7Install TypeScript 7 alongside TypeScript 6 API for tooling (#53122)Cursor Agent
39ee60a8Migrate all card features to lazy context (#52922)Cursor Agent
865b5b1bLocalize hardcoded UI strings in lovelace, logs, cloud, and media browse (Cursor Agent

What was excluded

Commits in window	2,794
Merge commits removed	−16
CI / dependency bots removed	−515
Considered	2,263

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 home-assistant/frontend

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