CLAUDE.md Rules for Next.js and Supabase
A ready-to-edit rules file for AI coding agents working in a Next.js, Supabase and Tailwind codebase.
ForDevelopers
Project rules: Next.js 16 + Supabase + Tailwind
You are working in a Next.js App Router codebase with Supabase and Tailwind CSS. Follow these rules on every task.
Ground rules
- Read the relevant guide in node_modules/next/dist/docs before using a Next.js API you are not sure about. This version has breaking changes.
- Prefer Server Components. Add "use client" only for interactivity, and keep client components small.
80% more in the full file
What's inside
- Format
- Markdown
- Contents
- Claude.md · 35 lines
- Version
- 1.0 · Updated 3 Oct 2026
- Licence
- Personal What this means
- Checked
- Checked before it ships
- CLAUDE.mdMarkdown · 2 KB
- LICENSE.txtadded to every download
About this item
A single CLAUDE.md (also usable as AGENTS.md or .cursorrules) that tells an AI coding agent how to work in a Next.js App Router project with Supabase and Tailwind: server-first components, Row Level Security in every migration, server-only service-role access, design-token discipline, accessibility basics, testing expectations and commit style. Drop it in your repository root and edit the sections to match your team.
- Cursor
- Rules
- Next.js
- Claude
- Supabase
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