3.9%

of 1,465 commits were committed by an AI agent — a floor, not an estimate

3.9% agent · top contributor 61.4%4 contributors

team

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

agent commits

1,408

human commits

agent contributors

61.4%

largest contributor

Assisted or autonomous

57assisted

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: 33.3%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code	Anthropic	56	3.8%
Devin	Cognition	1	0.1%

Verify it yourself

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

2df28d9aGate postgres install to the sharded test_postgres_backend jobClaude Code
e6102b52Register new DATABASE_CONFIG docs example in codeblocks inventoryClaude Code
ee6867e8Use is_postgres() in snapshot URL query (centralize backend check)Claude Code
d841be11Update DockerfileDevin

What was excluded

Commits in window	1,923
Merge commits removed	−44
CI / dependency bots removed	−414
Considered	1,465

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 ArchiveBox/ArchiveBox

Scan another repository

Try