Scope before prose
Directory-aware globs keep frontend guidance out of migrations, scripts, and unrelated code.
MdcRulesUpdated for Cursor Rules · 2026
Make Cursor follow
the rules.
Build clean, directory-aware .mdc files for the stack you actually use. Correct frontmatter, focused globs, and practical defaults — ready to paste into .cursor/rules.
01
Pick your stack
02
Preview the rule
03
Copy into Cursor
Live rule workbench
A better rule starts with a smaller scope.
Choose a template, inspect the exact .mdc output, then adapt it to the conventions already present in your repository.
STACK PRESETS
Token-OptimizedOptimized to consume 30% less context window tokens by stripping unnecessary boilerplate instructions.On-DemandScoped strictly to matching file globs, ensuring Cursor only loads this ruleset when active.
---
description: Focused project guidance for matching files
globs: ["app/**/*.{ts,tsx}", "components/**/*.tsx"]
alwaysApply: false
---
# Next.js App Router
- Use Server Components by default.
- Add "use client" only when a component needs state, event handlers, or browser APIs.
- Keep data access and secrets in server-only modules.
- Use the App Router file conventions for pages, layouts, loading, and errors.
- Follow the repository's existing import and naming conventions.
Rules that earn their context window
Less instruction. More signal.
A useful rule is not a giant style guide. It is a precise instruction attached to the files where it matters.
Readable by humans
Every preset is short enough to review, edit, and trust before it shapes generated code.
Configured in one place
Launch copy, metadata, presets, and calls to action all live in config/site.ts for fast iteration.
Early access
Get the full rule library when it drops.
New stack presets, field-tested rule patterns, and launch notes. Useful updates only.