# Nextjs

> Next.js App Router expert guidance. Use when building, debugging, or architecting Next.js applications — routing, Server Components, Server Actions, Cache Components, layouts, middleware/proxy, data fetching, rendering strategies, and deployment on Vercel.

Fuente: https://skillsagentes.com/skills/vercel/vercel-plugin/nextjs
Markdown: https://skillsagentes.com/skills/vercel/vercel-plugin/nextjs.md

Repositorio: https://github.com/vercel/vercel-plugin
Autor: vercel
Licencia: NOASSERTION
Actualizado: hace 5 meses
Coste de contexto: 65 tok instalada, 4.5k tok al activarse, 27.8k tok con todos los archivos del bundle
Bundle: 22 archivos, 109 KB
Permisos que pide: ninguno declarado

## Instalación

Un skill son archivos markdown: los mismos archivos valen para cualquier agente y lo único que cambia es el directorio de destino, es decir la bandera `--agent`. Añade `-g` para instalarlo en todos los proyectos de la máquina.

```bash
# Claude Code
npx -y skills add vercel/vercel-plugin --skill nextjs --agent claude-code
# Cursor
npx -y skills add vercel/vercel-plugin --skill nextjs --agent cursor
# Codex
npx -y skills add vercel/vercel-plugin --skill nextjs --agent codex
# Gemini CLI
npx -y skills add vercel/vercel-plugin --skill nextjs --agent gemini
# Windsurf
npx -y skills add vercel/vercel-plugin --skill nextjs --agent windsurf
# Cline
npx -y skills add vercel/vercel-plugin --skill nextjs --agent cline
```

## Archivos

- SKILL.md — 18 KB
- overlay.yaml — 14 KB
- references/app-router-files.md — 3 KB
- references/async-patterns.md — 2 KB
- references/bundling.md — 4 KB
- references/data-patterns.md — 7 KB
- references/debug-tricks.md — 3 KB
- references/directives.md — 1 KB
- references/error-handling.md — 5 KB
- references/file-conventions.md — 3 KB
- references/font.md — 5 KB
- references/functions.md — 4 KB
- references/hydration-error.md — 2 KB
- references/image.md — 4 KB
- references/metadata.md — 7 KB
- references/parallel-routes.md — 7 KB
- references/route-handlers.md — 3 KB
- references/rsc-boundaries.md — 4 KB
- references/runtime-selection.md — 985 B
- references/scripts.md — 3 KB
- references/self-hosting.md — 8 KB
- references/suspense-boundaries.md — 1 KB

## SKILL.md

Reproducido tal cual desde vercel/vercel-plugin bajo NOASSERTION. Esta sección es el documento original y está en inglés.

# Next.js Best Practices

Apply these rules when writing or reviewing Next.js code.

## File Conventions

See [file-conventions.md](./file-conventions.md) for:
- Project structure and special files
- Route segments (dynamic, catch-all, groups)
- Parallel and intercepting routes
- Middleware rename in v16 (middleware → proxy)

## RSC Boundaries

Detect invalid React Server Component patterns.

See [rsc-boundaries.md](./rsc-boundaries.md) for:
- Async client component detection (invalid)
- Non-serializable props detection
- Server Action exceptions

## Async Patterns

Next.js 15+ async API changes.

See [async-patterns.md](./async-patterns.md) for:
- Async `params` and `searchParams`
- Async `cookies()` and `headers()`
- Migration codemod

## Runtime Selection

See [runtime-selection.md](./runtime-selection.md) for:
- Default to Node.js runtime
- When Edge runtime is appropriate

## Directives

See [directives.md](./directives.md) for:
- `'use client'`, `'use server'` (React)
- `'use cache'` (Next.js)

## Functions

See [functions.md](./functions.md) for:
- Navigation hooks: `useRouter`, `usePathname`, `useSearchParams`, `useParams`
- Server functions: `cookies`, `headers`, `draftMode`, `after`
- Generate functions: `generateStaticParams`, `generateMetadata`

## Error Handling

See [error-handling.md](./error-handling.md) for:
- `error.tsx`, `global-error.tsx`, `not-found.tsx`
- `redirect`, `permanentRedirect`, `notFound`
- `forbidden`, `unauthorized` (auth errors)
- `unstable_rethrow` for catch blocks

## Data Patterns

See [data-patterns.md](./data-patterns.md) for:
- Server Components vs Server Actions vs Route Handlers
- Avoiding data waterfalls (`Promise.all`, Suspense, preload)
- Client component data fetching

## Route Handlers

See [route-handlers.md](./route-handlers.md) for:
- `route.ts` basics
- GET handler conflicts with `page.tsx`
- Environment behavior (no React DOM)
- When to use vs Server Actions

## Metadata & OG Images

See [metadata.md](./metadata.md) for:
- Static and dynamic metadata
- `generateMetadata` function
- OG image generation with `next/og`
- File-based metadata conventions

## Image Optimization

See [image.md](./image.md) for:
- Always use `next/image` over `<img>`
- Remote images configuration
- Responsive `sizes` attribute
- Blur placeholders
- Priority loading for LCP

## Font Optimization

See [font.md](./font.md) for:
- `next/font` setup
- Google Fonts, local fonts
- Tailwind CSS integration
- Preloading subsets

## Bundling

See [bundling.md](./bundling.md) for:
- Server-incompatible packages
- CSS imports (not link tags)
- Polyfills (already included)
- ESM/CommonJS issues
- Bundle analysis

## Scripts

See [scripts.md](./scripts.md) for:
- `next/script` vs native script tags
- Inline scripts need `id`
- Loading strategies
- Google Analytics with `@next/third-parties`

## Hydration Errors

See [hydration-error.md](./hydration-error.md) for:
- Common causes (browser APIs, dates, invalid HTML)
- Debugging with error overlay
- Fixes for each cause

## Suspense Boundaries

See [suspense-boundaries.md](./suspense-boundaries.md) for:
- CSR bailout with `useSearchParams` and `usePathname`
- Which hooks require Suspense boundaries

## Parallel & Intercepting Routes

See [parallel-routes.md](./parallel-routes.md) for:
- Modal patterns with `@slot` and `(.)` interceptors
- `default.tsx` for fallbacks
- Closing modals correctly with `router.back()`

## Self-Hosting

See [self-hosting.md](./self-hosting.md) for:
- `output: 'standalone'` for Docker
- Cache handlers for multi-instance ISR
- What works vs needs extra setup

## Debug Tricks

See [debug-tricks.md](./debug-tricks.md) for:
- MCP endpoint for AI-assisted debugging
- Rebuild specific routes with `--debug-build-paths`

## Dónde encaja

- Categoría: [DevOps e infraestructura](https://skillsagentes.com/categorias/devops-infraestructura.md) — Despliegues, contenedores, IaC y flujos de gestión de incidentes.
- Creador: [vercel](https://skillsagentes.com/creators/vercel.md) — 79 skills en el directorio
- [Todas las skills](https://skillsagentes.com/skills.md)
- [Ranking de instalaciones](https://skillsagentes.com/ranking.md)

## Otras skills del mismo repositorio

- [Knowledge Update](https://skillsagentes.com/skills/vercel/vercel-plugin/knowledge-update.md): Corrects outdated LLM knowledge about the Vercel platform and introduces new products. Injected at session start.
- [Vercel Connect](https://skillsagentes.com/skills/vercel/vercel-plugin/vercel-connect.md): Vercel Connect expert guidance — securely obtain scoped OAuth tokens for third-party services (Slack, GitHub, MCP servers, OAuth, Snowflake) on behalf of apps or users via Vercel OIDC. Use when wiring up third-party API access, connecting to MCP servers, sending Slack messages, accessing GitHub APIs, receiving webhook events from Slack/Linear/GitHub and forwarding them to your agents and apps, or building eve agent connections.
- [Vercel Functions](https://skillsagentes.com/skills/vercel/vercel-plugin/vercel-functions.md): Vercel Functions expert guidance — Serverless Functions, Edge Functions, Fluid Compute, streaming, Cron Jobs, and runtime configuration. Use when configuring, debugging, or optimizing server-side code running on Vercel.
- [Cdn Caching](https://skillsagentes.com/skills/vercel/vercel-plugin/cdn-caching.md): Debug Vercel CDN caching — cache hit rate, stale content, revalidation behavior, ISR + PPR, per-request cache reasons (cacheReason) and PPR state (ppr_state), and costs.
- [Eve](https://skillsagentes.com/skills/vercel/vercel-plugin/eve.md): eve framework guidance for durable AI agents and agent-powered applications. Use when creating, editing, or debugging an eve project, when the user explicitly asks for eve, or when the build-agents skill has selected eve as the default framework. Covers eve's filesystem-first runtime, durable sessions, tools, skills, connections, channels, sandboxes, subagents, schedules, evals, frontend clients, and Agent Runs observability. Do not use for incidental agent mentions, generic agent-building prompts, or established non-eve stacks unless the user asks for comparison or migration.

## Skills relacionadas

- [Cdn Caching](https://skillsagentes.com/skills/vercel/vercel-plugin/cdn-caching.md): Debug Vercel CDN caching — cache hit rate, stale content, revalidation behavior, ISR + PPR, per-request cache reasons (cacheReason) and PPR state (ppr_state), and costs.
- [Create A Backend](https://skillsagentes.com/skills/vercel/vercel-plugin/create-a-backend.md): Backend architecture guidance. Use when planning, building, or migrating an API or backend; choosing between Functions, Services, containers, Workflow, Queues, and Marketplace databases; or selecting a supported backend framework or runtime.
- [Deployments Cicd](https://skillsagentes.com/skills/vercel/vercel-plugin/deployments-cicd.md): Vercel deployment and CI/CD expert guidance. Use when deploying, promoting, rolling back, inspecting deployments, building with --prebuilt, or configuring CI workflow files for Vercel.
- [Microfrontends](https://skillsagentes.com/skills/vercel/vercel-plugin/microfrontends.md): Guide for building, configuring, and deploying microfrontends on Vercel. Use this skill when the user mentions microfrontends, multi-zones, splitting an app across teams, independent deployments, cross-app routing, incremental migration, composing multiple frontends under one domain, microfrontends.json, @vercel/microfrontends, the microfrontends local proxy, or path-based routing between Vercel projects. Also use when the user asks about shared layouts across projects, navigation between microfrontends, fallback environments, asset prefixes, or feature flag controlled routing.
- [Runtime Cache](https://skillsagentes.com/skills/vercel/vercel-plugin/runtime-cache.md): Vercel Runtime Cache API guidance — ephemeral per-region key-value cache with tag-based invalidation. Shared across Functions, Routing Middleware, and Builds. Use when implementing caching strategies beyond framework-level caching.

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