All metafields and metaobjects have permissions that control who can read or write to them.

> Note
> Metafield and metaobject [permissions are being simplified](/changelog/simplifying-how-metafield-and-metaobject-permissions-work) in the first half of 2025.

## How it works

Both metafields and metaobjects offer permissions based on their [ownership type](/docs/apps/build/custom-data/ownership) with the following defaults:

- **Merchant owned**: Readable and writeable by anyone in the Shopify admin. Not available by default in storefronts or customer accounts.
- **App owned**: Readable by only merchants and the owning app in the Shopify admin. Not available by default in storefronts or customer accounts.

Overriding default permissions requires a definition to exist. With that, you can set permissions in the `access` input with the [`MetafieldAccessInput`](/docs/api/admin-graphql/latest/input-objects/MetafieldAccessInput) and [`MetaobjectAccessInput`](/docs/api/admin-graphql/latest/input-objects/MetaobjectAccessInput) input objects respectively.

The following explains the permissions for each surface:

### Admin

`admin` controls permissions for both the Shopify admin and the [GraphQL Admin API](/docs/api/admin-graphql).

For app-owned metafields and metaobjects:

<table>
  <tr>
    <th>Permission</th>
    <th>Description</th>
  </tr>
  <tr>
    <td><code>MERCHANT_READ</code></td>
    <td>The metafield or metaobject will be readable by merchants through the Shopify admin.<br><br>Only the owning app can read and write to it using the GraphQL Admin API.</td>
  </tr>
  <tr>
    <td><code>MERCHANT_READ_WRITE</code></td>
    <td>The metafield or metaobject will be readable and writable by merchants via the Shopify admin.<br><br>Only the owning app can read and write to it via the GraphQL Admin API.</td>
  </tr>
</table>

For merchant-owned metafields and metaobjects:

<table>
  <tr>
    <th>Permission</th>
    <th>Description</th>
  </tr>
  <tr>
    <td><code>PUBLIC_READ_WRITE</code></td>
    <td>The metafield or metaobject will be readable and writable by merchants via the Shopify admin.<br><br>All apps with the `metaobject` access scope can read and write to it via the GraphQL Admin API.</td>
  </tr>
</table>

### Storefront

`storefront` controls permissions for the [Storefront API](/docs/api/storefront). All metafields and metaobjects are always available in [Liquid](/docs/api/liquid) templates and the [theme editor](/docs/storefronts/themes/tools/online-editor).

For both app-owned and merchant-owned metafields and metaobjects:

<table>
  <tr>
    <th>Permission</th>
    <th>Description</th>
  </tr>
  <tr>
    <td><code>NONE</code></td>
    <td>The metafield or metaobject will be hidden from the Storefront API.</td>
  </tr>
  <tr>
    <td><code>PUBLIC_READ</code></td>
    <td>The metafield or metaobject will be accessible in the Storefront API by any app with the `unauthenticated_metaobjects` access scope.</td>
  </tr>
</table>

### Customer Accounts

`customer_accounts` controls permissions for the [Customer Accounts API](/docs/api/customer).

> Note
> Only **metafields** can be connected to the Customer Accounts API.

For both app-owned and merchant-owned metafields:

<table>
  <tr>
    <th>Permission</th>
    <th>Description</th>
  </tr>
  <tr>
    <td><code>NONE</code></td>
    <td>The metafield will be hidden from the Customer Accounts API.</td>
  </tr>
  <tr>
    <td><code>CUSTOMER_READ</code></td>
    <td>The metafield will be readable in the Customer Accounts API.</td>
  </tr>
  <tr>
    <td><code>CUSTOMER_READ_WRITE</code></td>
    <td>The metafield will be readable and writable in the Customer Accounts API.</td>
  </tr>
</table>

## Examples

Requirements for these examples:

- Your app can make [authenticated requests](/docs/api/admin-graphql#authentication) to the GraphQL Admin API.

### Define an app-owned metafield and metaobject that merchants can create values for

Your app brings testimonials to a merchants store. You need to control the structure, but want to give merchants the ability to create and read values from within the Shopify admin.

Start by creating a metaobject definition with the [`metaobjectDefinitionCreate`](docs/api/admin-graphql/latest/mutations/metaobjectDefinitionCreate) mutation:

<p>
<div class="react-stacked-code-block ThemeMode-dim" data-preset="stacked">
<script data-option="title" data-value="POST https://{shop}.myshopify.com/admin/api/{api_version}/graphql.json"></script>


<p>
<div class="react-code-block" data-preset="basic">
<div class="react-code-block-preload ThemeMode-dim">
<div class="react-code-block-preload-bar basic-codeblock"></div>
<div class="react-code-block-preload-placeholder-container">
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
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</div>
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<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>

</div>
</div>

<script data-option="title" data-value="GraphQL mutation"></script>

<script type="text/plain" data-language="graphql">
RAW_MD_CONTENTmutation {
  metaobjectDefinitionCreate(definition: {
    name: "Testimonial",
    type: "$app:testimonial",
    access: {
      admin: MERCHANT_READ_WRITE,
      storefront: PUBLIC_READ,
    },
    displayNameKey: "author",
    fieldDefinitions: [
      {
        key: "author",
        name: "Author",
        type: "single_line_text_field",
      },
      {
        key: "body",
        name: "Body",
        type: "multi_line_text_field",
      },
    ]
  }) {
    metaobjectDefinition {
      id
      type
    }
  }
}
END_RAW_MD_CONTENT</script>

</div>
</p>

<p>
<div class="react-code-block" data-preset="basic">
<div class="react-code-block-preload ThemeMode-dim">
<div class="react-code-block-preload-bar basic-codeblock"></div>
<div class="react-code-block-preload-placeholder-container">
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
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<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>

</div>
</div>

<script data-option="title" data-value="JSON response"></script>
<script data-option="nocopy" data-value="true"></script>

<script type="text/plain" data-language="json">
RAW_MD_CONTENT{
  "data": {
    "metaobjectDefinitionCreate": {
      "metaobjectDefinition": {
        "id": "gid://shopify/MetaobjectDefinition/1",
        "type": "app--123456--testimonial",
      },
    }
  }
}
END_RAW_MD_CONTENT</script>

</div>
</p>


</div>
</p>


Now you can create a metafield definition that references this metaobject using the [`metafieldDefinitionCreate`](docs/api/admin-graphql/latest/mutations/metafieldDefinitionCreate) mutation. We take advantage of the default namespace of the app to create the metafield.

<p>
<div class="react-stacked-code-block ThemeMode-dim" data-preset="stacked">
<script data-option="title" data-value="POST https://{shop}.myshopify.com/admin/api/{api_version}/GraphQL.json"></script>


<p>
<div class="react-code-block" data-preset="basic">
<div class="react-code-block-preload ThemeMode-dim">
<div class="react-code-block-preload-bar basic-codeblock"></div>
<div class="react-code-block-preload-placeholder-container">
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
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</div>
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<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>

</div>
</div>

<script data-option="title" data-value="GraphQL mutation"></script>

<script type="text/plain" data-language="graphql">
RAW_MD_CONTENTmutation {
  metafieldDefinitionCreate(definition: {
    name: "Testimonials",
    key: "testimonials",
    type: "list.metaobject_reference",
    ownerType: "PRODUCT",
    access: {
      admin: MERCHANT_READ_WRITE,
      storefront: PUBLIC_READ,
    },
    validation: {
      metaobjectDefinitionId: "gid://shopify/MetaobjectDefinition/1",
    },
  }) {
    createdDefinition {
      namespace
      key
    }
  }
}
END_RAW_MD_CONTENT</script>

</div>
</p>

<p>
<div class="react-code-block" data-preset="basic">
<div class="react-code-block-preload ThemeMode-dim">
<div class="react-code-block-preload-bar basic-codeblock"></div>
<div class="react-code-block-preload-placeholder-container">
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
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<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>

</div>
</div>

<script data-option="title" data-value="JSON response"></script>

<script type="text/plain" data-language="json">
RAW_MD_CONTENT{
  "metafieldDefinitionCreate": {
    "createdDefinition": {
      "namespace": "app--123456",
      "key": "testimonials",
    },
  }
}
END_RAW_MD_CONTENT</script>

</div>
</p>


</div>
</p>


### Define a merchant-owned metafield that merchants can fully manage themselves

Let's create a `packing_number` metafield that merchants can fully manage themselves. Again, using the [`metafieldDefinitionCreate`](docs/api/admin-graphql/latest/mutations/metafieldDefinitionCreate) mutation. Because you want the merchant to have full control, you must use a non-reserved namespace.

<p>
<div class="react-stacked-code-block ThemeMode-dim" data-preset="stacked">
<script data-option="title" data-value="POST https://{shop}.myshopify.com/admin/api/{api_version}/GraphQL.json"></script>


<p>
<div class="react-code-block" data-preset="basic">
<div class="react-code-block-preload ThemeMode-dim">
<div class="react-code-block-preload-bar basic-codeblock"></div>
<div class="react-code-block-preload-placeholder-container">
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
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<div class="react-code-block-preload-codeline"></div>
</div>
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<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
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<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
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<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>

</div>
</div>

<script data-option="title" data-value="GraphQL mutation"></script>

<script type="text/plain" data-language="graphql">
RAW_MD_CONTENTmutation {
  metafieldDefinitionCreate(definition: {
    name: "Packing number",
    namespace: "custom",
    key: "packing_number",
    type: "single_line_text_field",
    ownerType: "PRODUCT",
  }) {
    createdDefinition {
      namespace
      key
      access {
        admin
        storefront
      }
    }
  }
}
END_RAW_MD_CONTENT</script>

</div>
</p>

<p>
<div class="react-code-block" data-preset="basic">
<div class="react-code-block-preload ThemeMode-dim">
<div class="react-code-block-preload-bar basic-codeblock"></div>
<div class="react-code-block-preload-placeholder-container">
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>
<div class="react-code-block-preload-code-container">
<div class="react-code-block-preload-codeline-number"></div>
<div class="react-code-block-preload-codeline"></div>
</div>

</div>
</div>

<script data-option="title" data-value="JSON response"></script>

<script type="text/plain" data-language="json">
RAW_MD_CONTENT{
  "metafieldDefinitionCreate": {
    "createdDefinition": {
      "namespace": "custom",
      "key": "packing_number",
      "access": {
        "admin": "PUBLIC_READ_WRITE",
        "storefront": "NONE",
      }
    },
  }
}
END_RAW_MD_CONTENT</script>

</div>
</p>


</div>
</p>