Category Schemas

PIM Protocol includes category schemas that define structured attributes for different types of products. These schemas are aligned with Schema.org vocabulary.

How schemas work

Each category (e.g., "Electronics", "Furniture") has a schema that defines:

• Required and optional attributes
• Data types and valid values
• Schema.org property mappings

When a Ref is created with a category, its traits field is validated against the corresponding schema.

Built-in categories

Category	Schema.org Type	Key Attributes
Electronics	Product	brand, model, condition
Furniture	Product	material, dimensions, style
Clothing	Product	size, color, brand, material
Books	Book	author, isbn, publisher
Vehicles	Vehicle	make, model, year, mileage

Schema.org mapping

Product data exports to Schema.org JSON-LD format for interoperability:

{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": "Vintage Guitar",
  "description": "1965 Fender Stratocaster",
  "brand": { "@type": "Brand", "name": "Fender" },
  "offers": {
    "@type": "Offer",
    "price": "2500",
    "priceCurrency": "USD"
  }
}

Adding custom categories

See the Adding Categories guide for how to extend the schema system.