3.9%

of 960 commits were committed by an AI agent — a floor, not an estimate

3.9% agent · top contributor 24.3%11 contributors

org-wide

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

agent commits

923

human commits

agent contributors

24.3%

largest contributor

Assisted or autonomous

37assisted

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: 5.9%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code	Anthropic	22	2.3%
GitHub Copilot	GitHub	10	1%
OpenAI Codex	OpenAI	5	0.5%

Verify it yourself

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

f7a2c626Persist the workbench session across the editor/processor switch (#7654)Claude Code
79686a3aform field editing (#6655)Claude Code
ba06a1dcfix(desktop): stop Task from eating the PowerShell variables in jlink… (#7Claude Code
41cbd97bci: reuse shared Python dependency cache across workflows (#7693)GitHub Copilot
97c0ccf5refactor(deps): optimize dependency footprints, and add lazy initializatioGitHub Copilot
05eb7402chore(ci): migrate Python tooling to uv and standardize workflow executionGitHub Copilot
2b6bb711fix(build): ensure `./gradlew clean` removes stale SaaS build artifacts (#OpenAI Codex
815c1db5Group Storybook packages in Dependabot config (#7432)OpenAI Codex
a63ab2dbAdd PR conflict labeler workflow (#7061)OpenAI Codex

What was excluded

Commits in window	1,243
Merge commits removed	−14
CI / dependency bots removed	−269
Considered	960

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 Stirling-Tools/Stirling-PDF

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