26.1%

of 1,033 commits were committed by an AI agent — a floor, not an estimate

26.1% agent · top contributor 51.5%28 contributors

team

A small group is using agents. Adoption has spread beyond one person but is not project-wide.

270

agent commits

763

human commits

agent contributors

51.5%

largest contributor

Assisted or autonomous

270assisted

0autonomous

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: 55.3%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code	Anthropic	251	24.3%
Cursor Agent	Anysphere	18	1.7%
Devin	Cognition	2	0.2%

Verify it yourself

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

2783b8e3fix(site): make built HTML work at any base path (#1669)Claude Code
5130557efeat(packs): compound, ground, and enforce domain knowledge via Compound PClaude Code
235252fafeat(site): publish the docs site at every.to/compound-engineering (#1664)Claude Code
062de4b5fix(ce-code-review): cheap review for small low-consequence diffs (#1706)Cursor Agent
5c32ef92fix(skills): tighten Astra-era description and ask-first load (#1683)Cursor Agent
f050478drefactor(skills): say conditions in ordinary English (#1682)Cursor Agent
6158fc0cfix(codex-content): preserve URLs and mention-like text (#1254)Devin
b1372bc5fix(ce-resolve-pr-feedback): stream GraphQL responses to temp files and fiDevin

What was excluded

Commits in window	1,214
Merge commits removed	−54
CI / dependency bots removed	−127
Considered	1,033

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 EveryInc/compound-engineering-plugin

Scan another repository

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