of 1,048 commits were committed by an AI agent — a floor, not an estimate

6% agent · top contributor 76.2%12 contributors

team

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

agent commits

985

human commits

agent contributors

76.2%

largest contributor

Assisted or autonomous

63assisted

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: 16.3%. Bars are scaled to that peak, not to 100%.

Which agents

GitHub Copilot	GitHub	48	4.6%
Claude Code	Anthropic	14	1.3%
Cursor Agent	Anysphere	2	0.2%

Verify it yourself

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

4e891502fix(ui): improve dashboard widget edit controls (#17359)GitHub Copilot
0409a0f5fix(storage-vercel-blob): allow overwriting existing blob keys (#17383)GitHub Copilot
f7b20705fix(plugin-multi-tenant): apply tenant on confirm (#17348)GitHub Copilot
f7df2137ci: gate mongodb test healthcheck on a writable primary (#17816)Claude Code
dcd6d7d5test: deflake trash breadcrumb collapse e2e (#17810)Claude Code
7bac6ab8feat: support PAYLOAD_SECRET rotation with a versioned keyring (#17674)Claude Code
0554b502fix(plugin-nested-docs): await populateBreadcrumbs in resaveChildren (#155Cursor Agent
8422668fchore: replace magic strings with centralized constants (#15475)Cursor Agent

What was excluded

Commits in window	1,048
Merge commits removed	−0
CI / dependency bots removed	−0
Considered	1,048

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 payloadcms/payload

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