Headless Cms Expert

---
name: headless-cms-expert
description: "Expert guide for Headless CMS integration (Sanity, Payload CMS, Strapi, Contentful, Storyblok) with modern frameworks / Panduan ahli integrasi Headless CMS (Sanity, Payload, Strapi, Contentful) dengan framework modern."
author: "vibes-plug-swarm"
---

# Headless CMS Expert (2026 Edition)

[English](#english) | [Bahasa Indonesia](#bahasa-indonesia)

---

<a name="english"></a>
## English

### Orchestration & Integration
- **`nextjs-app-router-expert`**: SSR/ISR content fetching and caching strategies.
- **`api-design-expert`**: REST/GraphQL API patterns for CMS queries.
- **`seo`**: Structured data, sitemaps, and metadata from CMS content.
- **`astro-framework-expert`**: Content collections and static site generation with CMS.
- **`rich-text-editor-expert`**: Custom editor components for CMS authoring.

### Description
Expert guide for selecting, integrating, and optimizing Headless CMS platforms in modern web applications. Covers Sanity v3 (GROQ, Portable Text, Content Lake), Payload CMS 3.x (TypeScript-first, code-defined schemas), Strapi 5 (open-source, self-hosted), Contentful (enterprise, GraphQL), and Storyblok (visual editing). Includes content modeling, preview mode, webhook-based revalidation, and migration strategies.

### Trigger Conditions
- Choosing or integrating a headless CMS.
- Building content-driven websites (blogs, docs, marketing sites).
- Implementing CMS preview/draft mode in Next.js or Astro.
- Designing content models and structured content schemas.
- Migrating from WordPress or monolithic CMS to headless.

---

### CMS Selection Guide

| Criteria | Sanity v3 | Payload 3.x | Strapi 5 | Contentful | Storyblok |
|----------|-----------|-------------|----------|------------|-----------|
| Hosting | Cloud (free tier) | Self-hosted / Cloud | Self-hosted | Cloud | Cloud |
| Schema Definition | Code (JS/TS) | Code (TS) | Admin UI / Code | Web UI | Web UI |
| Query Language | GROQ | REST / GraphQL | REST / GraphQL | GraphQL / REST | REST / GraphQL |
| Rich Text | Portable Text | Lexical / Slate | Blocks | Rich Text API | Rich Text |
| TypeScript | ★★★★★ | ★★★★★ | ★★★★ | ★★★ | ★★★ |
| Real-time | ★★★★★ | ★★★★ | ★★★ | ★★★ | ★★★★ |
| Visual Editing | Sanity Studio | Admin Panel | Admin Panel | Web App | Visual Editor |
| **Best For** | Developers | Code-first teams | Open-source fans | Enterprise | Marketing teams |

**Recommendation:** Use **Sanity v3** for developer-heavy teams. Use **Payload CMS** when you need full TypeScript control and self-hosting. Use **Strapi** for open-source requirements.

### Core Patterns

#### 1. Sanity v3 Integration

```typescript
// sanity.config.ts — Schema-as-code
import { defineConfig, defineField, defineType } from 'sanity';

export const postSchema = defineType({
  name: 'post',
  title: 'Blog Post',
  type: 'document',
  fields: [
    defineField({ name: 'title', type: 'string', validation: (r) => r.required() }),
    defineField({ name: 'slug', type: 'slug', options: { source: 'title' } }),
    defineField({ name: 'body', type: 'array', of: [{ type: 'block' }] }),
    defineField({ name: 'publishedAt', type: 'datetime' }),
  ],
});
```

```typescript
// Fetching with GROQ in Next.js App Router
import { createClient } from 'next-sanity';

const client = createClient({
  projectId: process.env.SANITY_PROJECT_ID!,
  dataset: 'production',
  apiVersion: '2026-08-01',
  useCdn: true,
});

// Server Component
async function BlogPage() {
  const posts = await client.fetch(
    `*[_type == "post"] | order(publishedAt desc) {
      title, slug, publishedAt,
      "excerpt": array::join(string::split(pt::text(body), "")[0..200], "")
    }`
  );
  return <PostList posts={posts} />;
}
```

#### 2. Payload CMS 3.x Integration

```typescript
// payload.config.ts
import { buildConfig } from 'payload';
import { postgresAdapter } from '@payloadcms/db-postgres';
import { lexicalEditor } from '@payloadcms/richtext-lexical';

export default buildConfig({
  db: postgresAdapter({ pool: { connectionString: process.env.DATABASE_URL! } }),
  editor: lexicalEditor(),
  collections: [
    {
      slug: 'posts',
      fields: [
        { name: 'title', type: 'text', required: true },
        { name: 'content', type: 'richText' },
        { name: 'status', type: 'select', options: ['draft', 'published'] },
      ],
    },
  ],
});
```

#### 3. Webhook Revalidation (Next.js)

```typescript
// app/api/revalidate/route.ts
import { revalidateTag } from 'next/cache';
import { NextRequest, NextResponse } from 'next/server';

export async function POST(req: NextRequest) {
  const secret = req.headers.get('x-webhook-secret');
  if (secret !== process.env.REVALIDATION_SECRET) {
    return NextResponse.json({ error: 'Unauthorized' }, { status: 401 });
  }
  const body = await req.json();
  revalidateTag(body._type); // Revalidate by content type
  return NextResponse.json({ revalidated: true });
}
```

#### 4. Preview Mode Pattern

```typescript
// app/api/draft/route.ts — Sanity preview
import { draftMode } from 'next/headers';
import { redirect } from 'next/navigation';

export async function GET(req: NextRequest) {
  const { searchParams } = new URL(req.url);
  const secret = searchParams.get('secret');
  const slug = searchParams.get('slug');
  if (secret !== process.env.SANITY_PREVIEW_SECRET) {
    return new Response('Invalid token', { status: 401 });
  }
  (await draftMode()).enable();
  redirect(`/posts/${slug}`);
}
```

### Production Checklist
- [ ] Webhook-based ISR revalidation configured.
- [ ] Preview/draft mode working with CMS studio.
- [ ] Image optimization pipeline (next/image or Sanity image URL builder).
- [ ] Content backup/export strategy defined.
- [ ] CORS and API permissions locked down.
- [ ] CDN caching for API responses configured.

---

<a name="bahasa-indonesia"></a>
## Bahasa Indonesia

### Integrasi Orkestrasi
- **`nextjs-app-router-expert`**: Strategi pengambilan konten SSR/ISR dan caching.
- **`api-design-expert`**: Pola API REST/GraphQL untuk query CMS.
- **`seo`**: Data terstruktur, sitemap, dan metadata dari konten CMS.

### Deskripsi
Panduan ahli untuk memilih, mengintegrasikan, dan mengoptimalkan platform Headless CMS dalam aplikasi web modern. Mencakup Sanity v3, Payload CMS 3.x, Strapi 5, Contentful, dan Storyblok. Termasuk pemodelan konten, mode preview, revalidasi berbasis webhook, dan strategi migrasi.

### Kondisi Pemicu
- Memilih atau mengintegrasikan headless CMS.
- Membangun website berbasis konten (blog, docs, marketing).
- Mengimplementasikan mode preview/draft CMS di Next.js atau Astro.
- Merancang model konten dan skema konten terstruktur.
- Migrasi dari WordPress atau CMS monolitik ke headless.