24.3%

of 12,261 commits were committed by an AI agent — a floor, not an estimate

24.3% agent · top contributor 8%135 contributors

org-wide

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

2,977

agent commits

9,284

human commits

135

agent contributors

largest contributor

Assisted or autonomous

2930assisted

47autonomous

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: 28.9%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code	Anthropic	2531	20.6%
Cursor Agent	Anysphere	293	2.4%
OpenAI Codex	OpenAI	243	2%
GitHub Copilot	GitHub	6	0%

Verify it yourself

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

e3e267c6ref(hybrid-cloud): remove Redis from outbox backfill watermark flow (#1243Claude Code
9f4097a4feat(preprod): Add direct IPA download for iOS builds (#124410)Claude Code
dee19143fix(apidocs): Stop documenting query values endpoints do not honor (#12434Claude Code
b5b4c180fix(seer): stop ThinkingBlock collapse flash between tool calls (#124459)Cursor Agent
3cc6862dfeat(smart-assignment): Add get_project_members Seer RPC tool (#124136)Cursor Agent
8048432bfix(scm-messaging): Persist and Busy Confirm and continue during project cCursor Agent
c59a3350test(ui): Deslop breakpoint tests (#124483)OpenAI Codex
996c01c6deps(ui): Update and group Oxc tooling (#124354)OpenAI Codex
2450983fref(oxlint): Use native oxlint rules and RuleTester (#124353)OpenAI Codex
8917a2ccfeat(seer): collapse each response into one ThinkingBlock (#121972)GitHub Copilot
15c959e5fix(issues): Return 400 for invalid search queries on issues-stats (#12221GitHub Copilot
d5ed4aa5feat(trace-items): Add endpoint to create/update attribute context (#11849GitHub Copilot

What was excluded

Commits in window	12,648
Merge commits removed	−17
CI / dependency bots removed	−370
Considered	12,261

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 getsentry/sentry

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