RuleStack
Counted 08:17 UTC

Real files, at real paths, counted every night

RuleStack
Real files, at real paths, counted every nightCounted 08:17 UTCDiff two files
7,205instruction files1,198repositories visited4,189rows written36files changed8formats20section tags85stacksCounted 13 September 2026
AGENTS.md617 repos, 60.4%CLAUDE.md359 repos, 35.2%.cursor/rules/*.mdc310 repos, 30.4%.github/copilot-instructions.md190 repos, 18.6%.clinerules188 repos, 18.4%GEMINI.md48 repos, 4.7%.windsurf/rules/*.md38 repos, 3.7%.cursorrules36 repos, 3.5%

GEMINI.md is in 48 repositories. The median one runs 394 words.

Gemini CLI's memory file, structurally close to CLAUDE.md, @imports and a user-scope layer, which is why repos that carry both usually carry near-identical text in each.

GoogleGooglevendorSince 2025-06-01All 62 indexed files
Measured

What the nightly counted in real repositories

Counted 13 September 2026
Repositories carrying it48 4.7% of the corpus
Files that write down a command54.8%
Files carrying a code block48.4%
Code style57.6% of 33 root files
Agent behaviour54.5% of 33 root files
Architecture45.5% of 33 root files
Tests36.4% of 33 root files
Setup & install36.4% of 33 root files
Git, commits & PRs30.3% of 33 root files
Documentation30.3% of 33 root files
Lint & format30.3% of 33 root files
Hard prohibitions27.3% of 33 root files
Testing strategy21.2% of 33 root files
Dependencies18.2% of 33 root files
APIs & contracts18.2% of 33 root files
Security15.2% of 33 root files
Performance12.1% of 33 root files
Database & migrations12.1% of 33 root files
Build12.1% of 33 root files
UI & components9.1% of 33 root files
Types9.1% of 33 root files
Deploy & release6.1% of 33 root files
Monorepo3.0% of 33 root files
Every night counted

Repositories carrying GEMINI.md, one column a night

24 nights stored
2026-08-0129 to 48 repositories2026-09-13
Asserted

What the documentation says this file can express

Read 1 August 2026
FileGEMINI.md
OwnerGoogle
Tools that read it2 tools
Glob targetingNo
ImportsYes
FrontmatterNo
Nested filesYes
User scopeYes

Read from the format’s own documentation and checked by hand. Capabilities are asserted; adoption is measured.

Hierarchical memory: a global ~/.gemini/GEMINI.md, then the project file, then nested files, concatenated from broadest to narrowest.

Gemini CLIGemini CLIGemini Code AssistGemini Code Assist
What it does well
@path imports and a global user file, same composition model as CLAUDE.md
Explicit hierarchy from global to local
What it cannot do
Google-only
No glob targeting
Counted pairwise

Repositories that carry GEMINI.md and something else

Counted 13 September 2026

The percentage is of repositories carrying GEMINI.md, which is the number a “GEMINI.md versus something” search is really asking for.

AGENTS.md83.3%40 carry both, 6.5% the other wayCLAUDE.md64.6%31 carry both, 8.6% the other wayCursor rules47.9%23 carry both, 7.4% the other wayCopilot instructions39.6%19 carry both, 10.0% the other wayCline rules35.4%17 carry both, 9.0% the other wayWindsurf rules31.3%15 carry both, 39.5% the other way.cursorrules10.4%5 carry both, 13.9% the other way
The files

62 GEMINI.md files match in the corpus. These score highest.

All 62
NoRepository and pathCoversScoreChanged
001TypeScriptgoogle-gemini/gemini-cliGEMINI.md91 /1001 month ago002PHPkevin997/CSL-Certification-Rest-APIGEMINI.md90 /10014 days ago003Pythonenuno/unifi-mcp-serverGEMINI.md89 /10029 days ago004Gocompozy/gographGEMINI.md86 /1001 month ago005Shellaemal/bodyshotsGEMINI.md81 /10015 days ago006TypeScriptaemal/samantha-voice-notesGEMINI.md81 /10015 days ago007Golepinkainen/hovimestariGEMINI.md81 /1001 month ago008TypeScriptwyre-technology/ai-impact-trackerGEMINI.md81 /10015 days ago009PHPnordeim/misc1/GEMINI.md81 /1001 month ago010Dartfirebase/flutterfireGEMINI.md80 /1001 month ago011Pythondoubts-suplab/eeik-bootstrapGEMINI.md80 /10029 days ago012Zigzigcc/zig-cookbookGEMINI.md79 /1001 month ago