Auth
Handles authentication setup for Next.js apps on Vercel with a focus on three providers: Clerk (which gets native Marketplace integration with auto-provisioned env vars), Descope, and Auth0. Triggers when you're working in middleware.ts, auth config files, or installing auth packages. Covers the standard flow of protecting routes, setting up sign-in pages, and accessing user sessions in both server and client components. The skill includes migration guidance if it spots legacy next-auth v4 patterns or manual JWT handling with jsonwebtoken, nudging you toward managed solutions. Honestly most useful for the Clerk-specific stuff since that's where the Vercel integration really pays off.
- skills.sh installs
- 326
- GitHub stars
- 183
- last updated
- Jun 3, 2026
Install
$ npx -y skills add vercel/vercel-plugin --skill auth --agent claude-codeInstalls into .claude/skills of the current project.
Files
Authentication Integrations
You are an expert in authentication for Vercel-deployed applications — covering Clerk (native Vercel Marketplace integration), Better Auth (self-hosted, with data in your own database), Descope, and Auth0 for application sign-in, plus Vercel's own primitives: Sign in with Vercel (OAuth/OIDC provider), Passport (deployment protection with your identity provider), and KMS (managed signing keys).
All Next.js examples target Next.js 16, where the request-interception file is proxy.ts (exporting proxy). On Next.js 15 or earlier the same code lives in middleware.ts (exporting middleware).
Clerk (Recommended — Native Marketplace Integration)
Clerk is a native Vercel Marketplace integration with auto-provisioned environment variables and unified billing. Current SDK: @clerk/nextjs v7 (Core 3, March 2026).
Install via Marketplace
# Install Clerk from Vercel Marketplace (auto-provisions env vars)
vercel integration add clerk
Auto-provisioned environment variables:
CLERK_SECRET_KEY— server-side API keyNEXT_PUBLIC_CLERK_PUBLISHABLE_KEY— client-side publishable key
SDK Setup
Sponsors
Agent CaffeineSponsoredClose your lid, come back to finished work
SnugSponsoredThe clipboard manager for the AI eraPromote your product hereReach 125k+ visitors monthly
WaxSponsoredBlock anything with supervision, without erasing your iPhonePromote your product hereReach 125k+ visitors monthly
knobsSponsoredSee your site on any phone, any day, in any languageDetails
- Repository
- github.com/vercel/vercel-plugin
- Categories
- Backend & APIs, Cloud & Infrastructure
- First seen
- Jun 3, 2026
More from vercel/vercel-plugin
All 25- Vercel Storage326
- Vercel Agent317
- Bootstrap315
- Chat Sdk315
- Verification315
- Workflow313
- Runtime Cache312
- Vercel Sandbox308
- Knowledge Update301
- Marketplace300
- Next Forge191
- Nextjs629
- Ai Sdk544
- React Best Practices491
- Deployments Cicd484
- Shadcn458
- Vercel Cli432
- Turbopack429
- Ai Gateway423
- Env Vars422
- Vercel Functions410
- Next Cache Components385
- Next Upgrade368
- Routing Middleware338
Recommended
More Backend & APIs
uspto-databasedavila7/claude-code-templatesAccess USPTO APIs for patent/trademark searches, examination history (PEDS), assignments, citations, office actions, TSDR, for IP analysis and prior art searche318skills.sh installs
dotnet-backend-patternssickn33/antigravity-awesome-skillsdotnet backend patterns309skills.sh installs
supabase-best-practicespedrobarretocw/supabase-best-practicessupabase best practices306skills.sh installs