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.

PHP runtime & extensions header files for PhpStorm

01Result

JetBrains/phpstorm-stubs ↗

JetBrains/phpstorm-stubs AI coding statistics: 2.1%

of 238 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate

2.1% agent · top contributor 80%2 contributors

individual

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

agent commits

233

other considered commits

agent contributors

80%

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

5assisted

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: 75%. Bars are scaled to that peak, not to 100%.

Which agents

Agent	Vendor	Commits	Share
Claude Code	Anthropic	4	1.7%
Cursor Agent	Anysphere	1	0.4%

03Evidence

Inspect the matches

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

Matched commit samples

e4f5f6c3 on GitHubRemove default values from @param docblocks in Relay stubsClaude Code
0253256c on GitHubFix cs-fixer single_line_empty_body violationClaude Code
95fbd5a2 on GitHubSync Relay v0.50.0Claude Code
ac3378fb on GitHubUpdate stubs map for MaxMind DB Reader namespacesCursor Agent

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	238
Merge commits removed	−0
CI / dependency bots removed	−0
Considered	238

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 →Cursor Agent commitsBrowse repositories with detected Cursor Agent signatures →PHP AI coding statisticsCompare evidence across PHP 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 JetBrains/phpstorm-stubs

Scan another repository

Try

Month	Agent share	Considered commits
2026-02	0%	5
2026-03	0%	12
2026-04	0%	24
2026-05	0%	9
2026-06	0%	91
2026-07	1.9%	53
2026-08	2.5%	40
2026-09	75%	4