Shopify Metafields & Metaobjects

Overview

Metafields attach key-value custom data to existing resources (products, variants, orders, customers). Metaobjects define entirely new content types with custom schemas. Together they replace the need for external databases for most custom data needs.

Prerequisites

• Completed shopify-install-auth setup
• Access scopes: read_metaobjects, write_metaobjects, read_metaobject_definitions, write_metaobject_definitions
• Metafield scopes per resource: read_products/write_products for product metafields, etc.

Instructions

Step 1: Define a Metafield on Products

Use metafieldDefinitionCreate with namespace, key, type, and ownerType: