Pattern

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• Attributes
• Supports
• Context
• Block Markup
• Source

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Reuse this design across your site.

• Name: core/block
• Category: reusable
• API Version: 3
• Block Type: Dynamic (server-rendered)
• Keywords: reusable

Attributes

Defined via the attributes property in block.json.

Attribute	Type	Default	Description
ref	number	—	—
content	object	{}	—

Supports

Defined via the supports property in block.json.

• customClassName: false
• html: false
• inserter: false
• renaming: false
• interactivity:
  • clientNavigation: true
• customCSS: false
• visibility: false

Context

Defined via the usesContext and providesContext properties in block.json.

Provides context:

• pattern/overrides → attribute content

Block Markup

This is a dynamic block. It is rendered on the server and does not save HTML in post content.

In post content, it is stored as a block comment:

<!-- wp:core/block {"ref":123} /-->

Source

• block.json (reference)
• Source directory — browse the edit and save source files, index.php, and more.