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.

Keep your code spotless

01Result

diffplug/spotless ↗

diffplug/spotless AI coding statistics: 13.5%

of 296 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate

13.5% agent · top contributor 77.5%6 contributors

team

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

agent commits

256

other considered commits

agent contributors

77.5%

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

38assisted

2autonomous

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: 28.3%. Bars are scaled to that peak, not to 100%.

Which agents

Agent	Vendor	Commits	Share
Claude Code	Anthropic	36	12.2%
GitHub Copilot	GitHub	4	1.4%

03Evidence

Inspect the matches

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

Matched commit samples

5bed86a2 on GitHubRestore the rationale comments dropped in the migrationClaude Code
95053802 on GitHubspotless.special-tests: declare the java plugin it depends onClaude Code
8501b76e on GitHubKeep Groovy's boolean parsing for the two env-var togglesClaude Code
3cd9b6f1 on GitHubfeat: Add expandWildcardImports support for Maven plugin - infrastructure GitHub Copilot
ac0fd8a1 on GitHubInitial planGitHub Copilot
e9a77c81 on GitHubChange to 4.39GitHub Copilot

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	555
Merge commits removed	−190
CI / dependency bots removed	−69
Considered	296

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 →GitHub Copilot commitsBrowse repositories with detected GitHub Copilot signatures →Java AI coding statisticsCompare evidence across Java 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 diffplug/spotless

Scan another repository

Try

Month	Agent share	Considered commits
2026-02	0%	12
2026-03	2.9%	35
2026-04	7.7%	13
2026-05	10.2%	59
2026-06	17.5%	57
2026-07	10%	30
2026-08	28.3%	46
2026-09	13.6%	44