11.6%

of 430 commits were committed by an AI agent — a floor, not an estimate

11.6% agent · top contributor 36%24 contributors

org-wide

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

agent commits

380

human commits

agent contributors

36%

largest contributor

Assisted or autonomous

50assisted

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: 22.7%. Bars are scaled to that peak, not to 100%.

Which agents

GitHub Copilot	GitHub	23	5.3%
Claude Code	Anthropic	22	5.1%
Cursor Agent	Anysphere	5	1.2%

Verify it yourself

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

4ec64c7cfix(extension-blockquote): fix backspace getting blocked after merging (#7GitHub Copilot
12192c7bchore(ci): add reusable composite actions (#8028)GitHub Copilot
ceebb310Update ProseMirror packages (#7960)GitHub Copilot
eefe75dechore: format changeset frontmatter so vp check passes on main (#8303)Claude Code
d02646bdadd new visual selection handler & refactored react node view selection haClaude Code
4ae6ea01fix(extension-text-style): keep sibling text styles when unsetting inside Claude Code
496d53affix(markdown): drop empty delimiters for whitespace-only marked text (#825Cursor Agent
ded3f16bfix: update React demo editor state subscriptions (#8078)Cursor Agent
6238a3cafix(extension-blockquote): add @tiptap/pm peer dependencyCursor Agent

What was excluded

Commits in window	601
Merge commits removed	−115
CI / dependency bots removed	−56
Considered	430

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 ueberdosis/tiptap

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