Dataset: 2026-10-27-catalog-ai-v2
Ruleset: b2e8889c66f7
Scanned: 2026-10-27
Window: February–September 15, 2026

Catalog tracking observation. This repository is measured with the same fixed window and ruleset, but it is not part of the published benchmark or its aggregate claims.

Extend your AtCoder

01Result

kenkoooo/AtCoderProblems ↗

kenkoooo/AtCoderProblems AI coding statistics: 80%

of 30 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate

Too little recent activity to publish. Only 30 commits landed in this window, so the percentage is noisy. Repositories below 100 are excluded from the index for this reason.

80% agent · top contributor 45.8%4 contributors

team

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

agent commits

other considered commits

agent contributors

45.8%

largest contributor

02Drivers

What shapes this result

Mode, timing, and detected signatures show whether the result reflects broad adoption or one concentrated workflow.

Assisted or autonomous

24assisted

0autonomous

Assisted — a developer’s identity authored the commit and the agent added itself as co-author. Autonomous — a bot identity authored the commit without a human identity attached.

Agent share by month

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

Which agents

Agent	Vendor	Commits	Share
Claude Code	Anthropic	24	80%

03Evidence

Inspect the matches

Public commit samples let you inspect the signatures behind the aggregate result.

Matched commit samples

90f0b08e on GitHubfix: max_streaks の二重タイムゾーン変換によるストリーク計算バグを修正Claude Code
cc68323c on GitHubfix: adt_top をコンテスト一覧から完全に非表示にするClaude Code
cb97219f on GitHubfix: getRatedTarget を rate_change の "-" 区切りに対応Claude Code

04Method

What entered the denominator

The result begins with commit history, removes merges and routine automation, and reports literal agent signatures as a lower bound.

Exclusion ledger

Commits in window	44
Merge commits removed	−14
CI / dependency bots removed	−0
Considered	30

Bots are excluded from the denominator entirely. Agent attribution requires a literal supported signature; no code-style inference is used.

Continue exploring

Claude Code commitsBrowse repositories with detected Claude Code signatures →TypeScript AI coding statisticsCompare evidence across TypeScript repositories →GitHub AI commit analyzerInspect another repository with the same evidence model →

Reproduce this observation

Run the same detector locally.

Deterministic signature matching; no code-style inference. Squash merges can remove trailers, so this result remains a measured floor.

npx qmmit-cli kenkoooo/AtCoderProblems

Scan another repository

Try

Month	Agent share	Considered commits
2026-03	100%	2
2026-04	100%	1
2026-06	76.9%	26
2026-07	100%	1