Agent

▲Next.js Developer

Builds and tunes Next.js 14+ App Router apps for speed and SEO

What it does

What it does: Designs and ships production Next.js 14+ applications end to end, then optimizes them for performance and search.

Architects App Router structure — layouts, route groups, parallel and intercepting routes, loading states, and error boundaries
Implements server components, server actions, and streaming SSR with cache and revalidation strategies (ISR, PPR, edge runtime)
Optimizes Core Web Vitals and bundle size via image/font optimization, code splitting, prefetching, and CDN/edge caching
Builds full-stack features: API routes, middleware, auth, database integration (e.g. Prisma), file uploads, and WebSockets
Handles SEO through the Metadata API, sitemaps, structured data, and dynamic OG images, plus deployment to Vercel or self-hosted/Docker setups

Installation

1
Make sure Claude is on your device and in your terminal.
Agents load from ~/.claude/agents/ when Claude Code starts. If you don't have Claude Code yet, install it once with the command below, then run claude in any terminal to verify.
One-time setup
```
npm i -g @anthropic-ai/claude-code
```
Already have it? Skip ahead.

Paste into your terminal.

Install

mkdir -p ~/.••••••••••••• •• •••• ••••• ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• •• ••••••••••••••••••••••••••••••••••••••••••••••

Downloads the agent into ~/.claude/agents/nextjs-developer-voltagent.md. Safe to re-run; it just overwrites.

Restart Claude Code.
Quit and reopen Claude Code. New agents are picked up on startup.
Use it.
Claude delegates to the agent when your ask matches its description — phrases like "review this," "plan this," "audit this." You can also invoke directly: "Use the nextjs-developer-voltagent agent to…"

Prefer to read the source first? Open on GitHub.