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.

Grails - the Web Application Framework

01Result

apache/grails-core ↗

apache/grails-core AI coding statistics: 5.6%

of 3,958 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate

5.6% agent · top contributor 92.4%6 contributors

individual

One person is driving this. The headline number reflects a single contributor's workflow, not a project-wide shift.

223

agent commits

3,735

other considered commits

agent contributors

92.4%

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

223assisted

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: 17.2%. Bars are scaled to that peak, not to 100%.

Which agents

Agent	Vendor	Commits	Share
Claude Code	Anthropic	116	2.9%
GitHub Copilot	GitHub	105	2.7%
Gemini CLI	Google	2	0.1%

03Evidence

Inspect the matches

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

Matched commit samples

9bf5f662 on GitHubAdd test coverage and fix real bugs in grails-datamapping-core's services Claude Code
c1b532ae on GitHubM6 FIX: Require a username and password on the spring-boot-starter-securitClaude Code
2f7a097e on GitHubFix JsonScanner number parsing for bare exponents and -Infinity (#16284)Claude Code
e2ee9746 on GitHubPotential fix for pull request findingGitHub Copilot
0430ed2d on GitHubPotential fix for pull request findingGitHub Copilot
0cd61e1c on GitHubPotential fix for pull request findingGitHub Copilot
837292bb on GitHubAlign Spotless config with Checkstyle rules in grails-forgeGemini CLI
876a26ca on GitHubExclude build directory from Checkstyle task sources to ignore generated sGemini CLI

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	5,390
Merge commits removed	−1,419
CI / dependency bots removed	−13
Considered	3,958

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 →Gemini CLI commitsBrowse repositories with detected Gemini CLI signatures →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 apache/grails-core

Scan another repository

Try

Month	Agent share	Considered commits
2026-01	0%	12
2026-02	0%	608
2026-03	0.8%	399
2026-04	17.2%	564
2026-05	2.3%	352
2026-06	12.5%	480
2026-07	6.1%	627
2026-08	2%	709
2026-09	1.4%	207