---
title: MetafieldDefinitionType - GraphQL Admin
description: A metafield definition type provides basic foundation and validation for a metafield.
api_version: 2025-10
api_name: admin
type: object
api_type: graphql
source_url:
  html: https://shopify.dev/docs/api/admin-graphql/latest/objects/MetafieldDefinitionType
  md: https://shopify.dev/docs/api/admin-graphql/latest/objects/MetafieldDefinitionType.md
---

# Metafield​Definition​Type

object

A metafield definition type provides basic foundation and validation for a metafield.

## Fields

* category

  [String!](https://shopify.dev/docs/api/admin-graphql/latest/scalars/String)

  non-null

  The category associated with the metafield definition type.

* name

  [String!](https://shopify.dev/docs/api/admin-graphql/latest/scalars/String)

  non-null

  The name of the type for the metafield definition. See the list of [supported types](https://shopify.dev/apps/metafields/types).

* supported​Validations

  [\[Metafield​Definition​Supported​Validation!\]!](https://shopify.dev/docs/api/admin-graphql/latest/objects/MetafieldDefinitionSupportedValidation)

  non-null

  The supported validations for a metafield definition type.

* supports​Definition​Migrations

  [Boolean!](https://shopify.dev/docs/api/admin-graphql/latest/scalars/Boolean)

  non-null

  Whether metafields without a definition can be migrated to a definition of this type.

* value​Type

  [Metafield​Value​Type!](https://shopify.dev/docs/api/admin-graphql/latest/enums/MetafieldValueType)

  non-nullDeprecated

***

## Map

### Fields with this object

* {}[MetafieldDefinition.type](https://shopify.dev/docs/api/admin-graphql/latest/objects/MetafieldDefinition#field-MetafieldDefinition.fields.type)
* {}[MetaobjectFieldDefinition.type](https://shopify.dev/docs/api/admin-graphql/latest/objects/MetaobjectFieldDefinition#field-MetaobjectFieldDefinition.fields.type)
* {}[StandardMetafieldDefinitionTemplate.type](https://shopify.dev/docs/api/admin-graphql/latest/objects/StandardMetafieldDefinitionTemplate#field-StandardMetafieldDefinitionTemplate.fields.type)
* {}[StandardMetaobjectDefinitionFieldTemplate.type](https://shopify.dev/docs/api/admin-graphql/latest/objects/StandardMetaobjectDefinitionFieldTemplate#field-StandardMetaobjectDefinitionFieldTemplate.fields.type)

***

## Queries

* [metafield​Definition​Types](https://shopify.dev/docs/api/admin-graphql/latest/queries/metafieldDefinitionTypes)

  query

  Each metafield definition has a type, which defines the type of information that it can store. This type is enforced across every instance of the resource that owns the metafield definition.

  Refer to the [list of supported metafield types](https://shopify.dev/apps/metafields/types).

***

## \<?>MetafieldDefinitionType Queries

### Queried by

* \<?>[metafield​Definition​Types](https://shopify.dev/docs/api/admin-graphql/latest/queries/metafieldDefinitionTypes)