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TanStack/query ↗
2.2%
of 723 commits were committed by an AI agent — a floor, not an estimate
2.2% agent · top contributor 18.8%10 contributors
org-wide

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

16
agent commits
707
human commits
10
agent contributors
18.8%
largest contributor

Assisted or autonomous

16assisted
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: 7.3%. Bars are scaled to that peak, not to 100%.

Which agents

Claude CodeAnthropic121.7%
OpenAI CodexOpenAI30.4%
GitHub CopilotGitHub10.1%

Verify it yourself

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

  • cafd540cfix(svelte-query): handle shrinking createRawRef array by multiple entriesClaude Code
  • 49138028fix(preact-query): allow retryOnMount when throwOnError is function (#1116Claude Code
  • 3c79861afix(broadcast-client): handle unhandled postMessage rejections (#10771)Claude Code
  • 9656dc4efix(query-core): Keep observer notifications stable (#11234)OpenAI Codex
  • 1f631b36perf(query-core): Skip unused query result tracking (#11225)OpenAI Codex
  • 5bb089d1perf(query-core): Reduce observer removal overhead (#11214)OpenAI Codex
  • b4368c43perf(query-core): skip no-op hydration callbacks and export dehydrateQueryGitHub Copilot

What was excluded

Commits in window795
Merge commits removed−0
CI / dependency bots removed−72
Considered723

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 TanStack/query

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