Supabase Agent Skills vs Vercel Agent Skills

Supabase Agent Skills

Agent Skills to help developers using AI agents with Supabase. Agent Skills are
folders of instructions, scripts, and resources that agents can discover and use
to do things more accurately and efficiently. Compatible with 18+ AI agents
including Claude Code, GitHub Copilot, Cursor, Cline, and many others.

The skills in this repo follow the Agent Skills
format.

Installation

See the Supabase AI Skills documentation
for detailed installation instructions.

Install all skills

npx skills add supabase/agent-skills

Install a specific skill

npx skills add supabase/agent-skills --skill supabase
npx skills add supabase/agent-skills --skill supabase-postgres-best-practices

Claude Code Plugin

You can also install the skills as Claude Code plugins:

## 1. Install supabase/agent-skill marketplace
claude plugin marketplace add supabase/agent-skills

## 2. Install the plugin that you want
claude plugin install supabase@supabase-agent-skills
claude plugin install postgres-best-practices@supabase-agent-skills

Available Skills

Usage

Skills are automatically available once installed. The agent will use them when
relevant tasks are detected.

Examples:

Optimize this Postgres query

Review my schema for performance issues

Help me set up Supabase Auth with Next.js

Help me add proper indexes to this table

Skill Structure

Each skill follows the Agent Skills Open Standard:

• SKILL.md - Required skill manifest with frontmatter (name, description, metadata)
• references/ - (Optional) Reference files for detailed documentation

.well-known discovery

Each release uploads a dist/index.json alongside the skill tarballs. This index conforms to the agent-skills .well-known URI spec (schema v0.2.0) and is consumed by supabase.com to serve skills at https://supabase.com/.well-known/agent-skills/.

The release artifacts are built by scripts/build-release.ts and triggered by Release Please on every semver release.

Migrating to the official GitHub Action

jonathanhefner/agentskills-build-for-well-known is intended to be transferred to the agentskills org and published to the GitHub Marketplace. When that happens, scripts/build-release.ts and the pnpm build:release step in release-please.yml can be replaced with the Action directly:

- name: Build release artifacts
  uses: agentskills/build-for-well-known@v1   # replaces pnpm build:release
  with:
    skills-dir: skills
    output-dir: dist

Everything else — the Release Please trigger, the upload step, the supabase-plugin dispatch — stays exactly the same. The script and the Action produce identical output, so it is a drop-in swap.

Agent Skills

A collection of skills for AI coding agents. Skills are packaged instructions and scripts that extend agent capabilities.

Skills follow the Agent Skills format.

Available Skills

vercel-optimize

Audits a Vercel project for cost, performance, reliability, caching, function usage, and billing opportunities. It collects Vercel metrics first, then investigates only the routes and files those metrics point to.

Use when:

• Optimizing a deployed Vercel project
• Reducing Vercel costs or function usage
• Investigating slow or expensive routes
• Finding caching, ISR, middleware, image, or build-minute issues
• Producing a ranked cost and performance report

react-best-practices

React and Next.js performance optimization guidelines from Vercel Engineering. Contains 40+ rules across 8 categories, prioritized by impact.

Use when:

• Writing new React components or Next.js pages
• Implementing data fetching (client or server-side)
• Reviewing code for performance issues
• Optimizing bundle size or load times

Categories covered:

• Eliminating waterfalls (Critical)
• Bundle size optimization (Critical)
• Server-side performance (High)
• Client-side data fetching (Medium-High)
• Re-render optimization (Medium)
• Rendering performance (Medium)
• JavaScript micro-optimizations (Low-Medium)

web-design-guidelines

Review UI code for compliance with web interface best practices. Audits your code for 100+ rules covering accessibility, performance, and UX.

Use when:

• "Review my UI"
• "Check accessibility"
• "Audit design"
• "Review UX"
• "Check my site against best practices"

Categories covered:

• Accessibility (aria-labels, semantic HTML, keyboard handlers)
• Focus States (visible focus, focus-visible patterns)
• Forms (autocomplete, validation, error handling)
• Animation (prefers-reduced-motion, compositor-friendly transforms)
• Typography (curly quotes, ellipsis, tabular-nums)
• Images (dimensions, lazy loading, alt text)
• Performance (virtualization, layout thrashing, preconnect)
• Navigation & State (URL reflects state, deep-linking)
• Dark Mode & Theming (color-scheme, theme-color meta)
• Touch & Interaction (touch-action, tap-highlight)
• Locale & i18n (Intl.DateTimeFormat, Intl.NumberFormat)

writing-guidelines

Review docs and prose for compliance with the Vercel writing handbook. Audits your pages for 80+ rules covering voice, structure, content types, code samples, typography, and AI workflow.

Use when:

• "Review my docs"
• "Check writing style"
• "Audit prose"
• "Review docs voice and tone"
• "Check this page against the writing handbook"

Categories covered:

• Planning (content plan, content type, user-shaped titles)
• Voice & tone (active voice, direct address, banned words like easy/simple/quick)
• Tone by content type (tutorial, how-to, reference, conceptual, troubleshooting)
• Headings & structure (sentence case, descriptive subheadings, TL;DR opens)
• Lists (when to use, bold/description format)
• Code (language tags, TypeScript first, <Steps/>, 80-col / 25-line limits)
• Placeholders, units, & numbers (snake_case text, count-up numbers, 64 KB/200 ms)
• Typography (no em dashes as punctuation, curly quotes, ellipsis character, non-breaking spaces)
• Source formatting (no hard-wrap, no --- rules, blank line discipline)
• Pricing & money pages (tables, uncompromising detail)
• AI workflow (accountability, enterprise models, plan first, disclose AI use)
• Review (PR description discipline, author accountability)

react-native-guidelines

React Native best practices optimized for AI agents. Contains 16 rules across 7 sections covering performance, architecture, and platform-specific patterns.

Use when:

• Building React Native or Expo apps
• Optimizing mobile performance
• Implementing animations or gestures
• Working with native modules or platform APIs

Categories covered:

• Performance (Critical) - FlashList, memoization, heavy computation
• Layout (High) - flex patterns, safe areas, keyboard handling
• Animation (High) - Reanimated, gesture handling
• Images (Medium) - expo-image, caching, lazy loading
• State Management (Medium) - Zustand patterns, React Compiler
• Architecture (Medium) - monorepo structure, imports
• Platform (Medium) - iOS/Android specific patterns

react-view-transitions

Implement smooth, native-feeling animations using React's View Transition API. Covers the <ViewTransition> component, addTransitionType, transition types, and Next.js integration including the transitionTypes prop on next/link.

Use when:

• Adding page transitions or route animations
• Animating enter/exit of components
• Creating shared element transitions (list-to-detail morphing)
• Implementing directional (forward/back) navigation animations
• Integrating view transitions in Next.js App Router
• Animating list reorder or Suspense fallback reveals

Topics covered:

• <ViewTransition> component (enter, exit, update, share triggers)
• addTransitionType for directional/context-specific animations
• View Transition Classes and CSS pseudo-elements
• Shared element transitions with the name prop
• JavaScript animations via Web Animations API
• Next.js transitionTypes prop on next/link
• Ready-to-use CSS animation recipes (fade, slide, scale, flip)
• Accessibility (prefers-reduced-motion)

composition-patterns

React composition patterns that scale. Helps avoid boolean prop proliferation through compound components, state lifting, and internal composition.

Use when:

• Refactoring components with many boolean props
• Building reusable component libraries
• Designing flexible APIs
• Reviewing component architecture

Patterns covered:

• Extracting compound components
• Lifting state to reduce props
• Composing internals for flexibility
• Avoiding prop drilling

deploy-to-vercel

Deploy applications and websites to Vercel. Prefers git-push deploys on a linked project, falls back to the Vercel CLI, and uses vercel deploy --temporary when no login is available. Temporary deployments return a claim URL so users can keep them.

Use when:

• "Deploy my app"
• "Push this live"
• "Deploy and give me the link"
• "Create a preview deployment"

Installation

npx skills add vercel-labs/agent-skills

Usage

Skills are automatically available once installed. The agent will use them when relevant tasks are detected.

Examples:

Deploy my app

Review this React component for performance issues

Help me optimize this Next.js page

Discovery index

Every change to a skill on main publishes an immutable GitHub release with
an Agent Skills discovery index and one artifact per skill. Build the same
artifacts locally with:

npm ci --ignore-scripts
node scripts/build-discovery-index.mjs https://example.com/skills

Skill Structure

Each skill contains:

• SKILL.md - Instructions for the agent
• scripts/ - Helper scripts for automation (optional)
• references/ - Supporting documentation (optional)

License

MIT