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portable-text-serialization

Skill

Render and serialize Portable Text to React, Svelte, Vue, Astro, HTML, Markdown, and plain text. Use when implementing Portable Text rendering in any frontend framework, building custom serializers for non-standard block types, converting Portable Text to HTML strings server-side, converting Portabl

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Install

git clone https://github.com/sanity-io/agent-toolkit.git ~/.claude/skills/portable-text-serialization

What is portable-text-serialization?

Render and serialize Portable Text to React, Svelte, Vue, Astro, HTML, Markdown, and plain text. Use when implementing Portable Text rendering in any frontend framework, building custom serializers for non-standard block types, converting Portable Text to HTML strings server-side, converting Portable Text to Markdown, extracting plain text from Portable Text, or troubleshooting rendering issues with marks, blocks, lists, or custom types.

What this can do

Capabilities declared in this component's own frontmatter — not inferred.

Inherit all session tools

Declares no tool restrictions — inherits every session tool

~110 tokens of context used while enabled, before you invoke anything

Documentation

README · ~2 min read

Portable Text Serialization

Render Portable Text content across frameworks using the @portabletext/* library family. Each library follows the same component-mapping pattern: you provide a components object that maps PT node types to framework-specific renderers.

Portable Text Structure (Quick Reference)

PT is an array of blocks. Each block has _type, optional style, children (spans), markDefs, listItem, and level.

Root array
├── block (_type: "block")
│   ├── style: "normal" | "h1" | "h2" | "blockquote" | ...
│   ├── children: [span, span, ...]
│   │   └── span: { _type: "span", text: "...", marks: ["strong", "<markDefKey>"] }

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