55.6%

of 367 commits were committed by an AI agent — a floor, not an estimate

55.6% agent · top contributor 26.5%50 contributors

org-wide

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

204

agent commits

163

human commits

agent contributors

26.5%

largest contributor

Assisted or autonomous

189assisted

15autonomous

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: 75%. Bars are scaled to that peak, not to 100%.

Which agents

GitHub Copilot	GitHub	199	54.2%
Claude Code	Anthropic	3	0.8%
OpenAI Codex	OpenAI	1	0.3%
Cursor Agent	Anysphere	1	0.3%

Verify it yourself

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

7d13a7adfix(oauth): advertise only default scopes in protected resource metadata (GitHub Copilot
9205304ffix: restore sanitizer content boundaries (#3219)GitHub Copilot
f2cbc12efix(sanitize): preserve plain-text title characters (#3216)GitHub Copilot
9cfe97e2fix(issues): allow delete:false in issue_write issue_fieldsClaude Code
3a4c6600fix: restore thread id in get_review_comments responseClaude Code
f93e5260feat: add resolve/unresolve review thread methodsClaude Code
a718d37fAdd README community resource links (#2848)OpenAI Codex
5aa8ed36fix(pull_requests): validate required params in add_comment_to_pending_revCursor Agent

What was excluded

Commits in window	464
Merge commits removed	−0
CI / dependency bots removed	−97
Considered	367

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 github/github-mcp-server

Scan another repository

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