39.4%

of 558 commits were committed by an AI agent — a floor, not an estimate

39.4% agent · top contributor 66.4%20 contributors

team

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

220

agent commits

338

human commits

agent contributors

66.4%

largest contributor

Assisted or autonomous

220assisted

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

Mar26

Apr26

May26

Jun26

Jul26

Aug26

Sep26

Peak month: 64.3%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code	Anthropic	207	37.1%
Cursor Agent	Anysphere	9	1.6%
OpenAI Codex	OpenAI	7	1.3%
GitHub Copilot	GitHub	2	0.4%

Verify it yourself

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

e693e11arelease: v1.0.3 (#1517)Claude Code
87c4524bfix(audio): validate redirects and pin connections on provider requests (#Claude Code
7420d26efix(render-service): contain untrusted HTML with a network policy on previClaude Code
e58c7000fix(generation): keep diagram node position off the hover transform (#1339Cursor Agent
1b4a1681fix(build): scope Next typecheck to production sources (#1179)Cursor Agent
13d94a52feat(ai): add Grok 4.6 to the model registry (#1113)Cursor Agent
be3d313bfeat(document): dirty-set incremental saves + operation-level flush (#983)OpenAI Codex
e39c64cdfeat(persistence): one-command server-backed stack (compose profile + embeOpenAI Codex
5cef056dfeat(storage): server-backed documents — HTTP contract, Postgres backend, OpenAI Codex
fc66cc06feat(runtime): add learner whiteboard RuntimeStore foundation (#1075)GitHub Copilot
5d5acd62feat: claude search (#393)GitHub Copilot

What was excluded

Commits in window	570
Merge commits removed	−12
CI / dependency bots removed	−0
Considered	558

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 THU-MAIC/OpenMAIC

Scan another repository

Try