1. Overview
Block markup is HTML + JSON. Easy for LLMs to produce, hard to validate by hand. Expose blocks.parse and blocks.render via MCP and round-trip becomes safe.
2. Block generation
blocks.generate
AI generates HTML+JSON blocks from a brief.
blocks.validate
Strict schema check before insert.
blocks.render
Server-side render returns HTML preview.
3. Patterns & InnerBlocks
example.json json
{
"name": "core/columns",
"attributes": {},
"innerBlocks": [
{ "name":"core/column", "innerBlocks":[ { "name":"core/heading", "attributes":{ "content":"Plans" } } ] },
{ "name":"core/column", "innerBlocks":[ { "name":"core/heading", "attributes":{ "content":"Pricing" } } ] }
]
}4. Dynamic content
Combine posts.list with blocks.compose to build "latest from category X" sections at agent-time.
5. Example workflows
"Build a 3-column pricing pattern for the homepage." Agent generates the markup, validates it, renders a preview, inserts it as a draft.