---
title: customerByIdentifier - GraphQL Admin
description: Return a customer by an identifier.
api_version: 2025-10
api_name: admin
type: query
api_type: graphql
source_url:
  html: https://shopify.dev/docs/api/admin-graphql/latest/queries/customerByIdentifier
  md: https://shopify.dev/docs/api/admin-graphql/latest/queries/customerByIdentifier.md
---

# customer​By​Identifier

query

Requires `read_customers` access scope.

Return a customer by an identifier.

## Arguments

* identifier

  [Customer​Identifier​Input!](https://shopify.dev/docs/api/admin-graphql/latest/input-objects/CustomerIdentifierInput)

  required

  The identifier of the customer.

***

## Possible returns

* Customer

  [Customer](https://shopify.dev/docs/api/admin-graphql/latest/objects/Customer)

  Represents information about a customer of the shop, such as the customer's contact details, their order history, and whether they've agreed to receive marketing material by email.

  **Caution:** Only use this data if it's required for your app's functionality. Shopify will restrict [access to scopes](https://shopify.dev/api/usage/access-scopes) for apps that don't have a legitimate use for the associated data.

***

## Examples

* ### Find a customer by custom id

  #### Query

  ```graphql
  query($identifier: CustomerIdentifierInput!) {
    customer: customerByIdentifier(identifier: $identifier) {
      id
      amountSpent {
        amount
        currencyCode
      }
    }
  }
  ```

  #### Variables

  ```json
  {
    "identifier": {
      "customId": {
        "namespace": "custom",
        "key": "id",
        "value": "16a3a6dd"
      }
    }
  }
  ```

  #### cURL

  ```bash
  curl -X POST \
  https://your-development-store.myshopify.com/admin/api/2025-10/graphql.json \
  -H 'Content-Type: application/json' \
  -H 'X-Shopify-Access-Token: {access_token}' \
  -d '{
  "query": "query($identifier: CustomerIdentifierInput!) { customer: customerByIdentifier(identifier: $identifier) { id amountSpent { amount currencyCode } } }",
   "variables": {
      "identifier": {
        "customId": {
          "namespace": "custom",
          "key": "id",
          "value": "16a3a6dd"
        }
      }
    }
  }'
  ```

  #### React Router

  ```javascript
  import { authenticate } from "../shopify.server";

  export const loader = async ({request}) => {
    const { admin } = await authenticate.admin(request);
    const response = await admin.graphql(
      `#graphql
    query($identifier: CustomerIdentifierInput!) {
      customer: customerByIdentifier(identifier: $identifier) {
        id
        amountSpent {
          amount
          currencyCode
        }
      }
    }`,
    {
      variables: {
          "identifier": {
              "customId": {
                  "namespace": "custom",
                  "key": "id",
                  "value": "16a3a6dd"
              }
          }
      },
    },
    );
    const json = await response.json();
    return json.data;
  }
  ```

  #### Ruby

  ```ruby
  session = ShopifyAPI::Auth::Session.new(
    shop: "your-development-store.myshopify.com",
    access_token: access_token
  )
  client = ShopifyAPI::Clients::Graphql::Admin.new(
    session: session
  )

  query = <<~QUERY
    query($identifier: CustomerIdentifierInput!) {
      customer: customerByIdentifier(identifier: $identifier) {
        id
        amountSpent {
          amount
          currencyCode
        }
      }
    }
  QUERY

  variables = {
    "identifier": {
      "customId": {
        "namespace": "custom",
        "key": "id",
        "value": "16a3a6dd"
      }
    }
  }

  response = client.query(query: query, variables: variables)
  ```

  #### Node.js

  ```javascript
  const client = new shopify.clients.Graphql({session});
  const data = await client.query({
    data: {
      "query": `query($identifier: CustomerIdentifierInput!) {
        customer: customerByIdentifier(identifier: $identifier) {
          id
          amountSpent {
            amount
            currencyCode
          }
        }
      }`,
      "variables": {
          "identifier": {
              "customId": {
                  "namespace": "custom",
                  "key": "id",
                  "value": "16a3a6dd"
              }
          }
      },
    },
  });
  ```

  #### Response

  ```json
  {
    "customer": {
      "id": "gid://shopify/Customer/544365967",
      "amountSpent": {
        "amount": "8305.6",
        "currencyCode": "USD"
      }
    }
  }
  ```

* ### Find a customer by email address

  #### Query

  ```graphql
  query($identifier: CustomerIdentifierInput!) {
    customer: customerByIdentifier(identifier: $identifier) {
      id
      amountSpent {
        amount
        currencyCode
      }
    }
  }
  ```

  #### Variables

  ```json
  {
    "identifier": {
      "emailAddress": "bob@example.com"
    }
  }
  ```

  #### cURL

  ```bash
  curl -X POST \
  https://your-development-store.myshopify.com/admin/api/2025-10/graphql.json \
  -H 'Content-Type: application/json' \
  -H 'X-Shopify-Access-Token: {access_token}' \
  -d '{
  "query": "query($identifier: CustomerIdentifierInput!) { customer: customerByIdentifier(identifier: $identifier) { id amountSpent { amount currencyCode } } }",
   "variables": {
      "identifier": {
        "emailAddress": "bob@example.com"
      }
    }
  }'
  ```

  #### React Router

  ```javascript
  import { authenticate } from "../shopify.server";

  export const loader = async ({request}) => {
    const { admin } = await authenticate.admin(request);
    const response = await admin.graphql(
      `#graphql
    query($identifier: CustomerIdentifierInput!) {
      customer: customerByIdentifier(identifier: $identifier) {
        id
        amountSpent {
          amount
          currencyCode
        }
      }
    }`,
    {
      variables: {
          "identifier": {
              "emailAddress": "bob@example.com"
          }
      },
    },
    );
    const json = await response.json();
    return json.data;
  }
  ```

  #### Ruby

  ```ruby
  session = ShopifyAPI::Auth::Session.new(
    shop: "your-development-store.myshopify.com",
    access_token: access_token
  )
  client = ShopifyAPI::Clients::Graphql::Admin.new(
    session: session
  )

  query = <<~QUERY
    query($identifier: CustomerIdentifierInput!) {
      customer: customerByIdentifier(identifier: $identifier) {
        id
        amountSpent {
          amount
          currencyCode
        }
      }
    }
  QUERY

  variables = {
    "identifier": {
      "emailAddress": "bob@example.com"
    }
  }

  response = client.query(query: query, variables: variables)
  ```

  #### Node.js

  ```javascript
  const client = new shopify.clients.Graphql({session});
  const data = await client.query({
    data: {
      "query": `query($identifier: CustomerIdentifierInput!) {
        customer: customerByIdentifier(identifier: $identifier) {
          id
          amountSpent {
            amount
            currencyCode
          }
        }
      }`,
      "variables": {
          "identifier": {
              "emailAddress": "bob@example.com"
          }
      },
    },
  });
  ```

  #### Response

  ```json
  {
    "customer": {
      "id": "gid://shopify/Customer/544365967",
      "amountSpent": {
        "amount": "8305.6",
        "currencyCode": "USD"
      }
    }
  }
  ```

* ### Find a customer by phone number

  #### Query

  ```graphql
  query($identifier: CustomerIdentifierInput!) {
    customer: customerByIdentifier(identifier: $identifier) {
      id
      amountSpent {
        amount
        currencyCode
      }
    }
  }
  ```

  #### Variables

  ```json
  {
    "identifier": {
      "phoneNumber": "+13125551212"
    }
  }
  ```

  #### cURL

  ```bash
  curl -X POST \
  https://your-development-store.myshopify.com/admin/api/2025-10/graphql.json \
  -H 'Content-Type: application/json' \
  -H 'X-Shopify-Access-Token: {access_token}' \
  -d '{
  "query": "query($identifier: CustomerIdentifierInput!) { customer: customerByIdentifier(identifier: $identifier) { id amountSpent { amount currencyCode } } }",
   "variables": {
      "identifier": {
        "phoneNumber": "+13125551212"
      }
    }
  }'
  ```

  #### React Router

  ```javascript
  import { authenticate } from "../shopify.server";

  export const loader = async ({request}) => {
    const { admin } = await authenticate.admin(request);
    const response = await admin.graphql(
      `#graphql
    query($identifier: CustomerIdentifierInput!) {
      customer: customerByIdentifier(identifier: $identifier) {
        id
        amountSpent {
          amount
          currencyCode
        }
      }
    }`,
    {
      variables: {
          "identifier": {
              "phoneNumber": "+13125551212"
          }
      },
    },
    );
    const json = await response.json();
    return json.data;
  }
  ```

  #### Ruby

  ```ruby
  session = ShopifyAPI::Auth::Session.new(
    shop: "your-development-store.myshopify.com",
    access_token: access_token
  )
  client = ShopifyAPI::Clients::Graphql::Admin.new(
    session: session
  )

  query = <<~QUERY
    query($identifier: CustomerIdentifierInput!) {
      customer: customerByIdentifier(identifier: $identifier) {
        id
        amountSpent {
          amount
          currencyCode
        }
      }
    }
  QUERY

  variables = {
    "identifier": {
      "phoneNumber": "+13125551212"
    }
  }

  response = client.query(query: query, variables: variables)
  ```

  #### Node.js

  ```javascript
  const client = new shopify.clients.Graphql({session});
  const data = await client.query({
    data: {
      "query": `query($identifier: CustomerIdentifierInput!) {
        customer: customerByIdentifier(identifier: $identifier) {
          id
          amountSpent {
            amount
            currencyCode
          }
        }
      }`,
      "variables": {
          "identifier": {
              "phoneNumber": "+13125551212"
          }
      },
    },
  });
  ```

  #### Response

  ```json
  {
    "customer": {
      "id": "gid://shopify/Customer/544365967",
      "amountSpent": {
        "amount": "8305.6",
        "currencyCode": "USD"
      }
    }
  }
  ```

[Open in GraphiQL](http://localhost:3457/graphiql?query=query\(%24identifier%3A%20CustomerIdentifierInput!\)%20%7B%0A%20%20customer%3A%20customerByIdentifier\(identifier%3A%20%24identifier\)%20%7B%0A%20%20%20%20id%0A%20%20%20%20amountSpent%20%7B%0A%20%20%20%20%20%20amount%0A%20%20%20%20%20%20currencyCode%0A%20%20%20%20%7D%0A%20%20%7D%0A%7D\&variables=%7B%0A%20%20%22identifier%22%3A%20%7B%0A%20%20%20%20%22customId%22%3A%20%7B%0A%20%20%20%20%20%20%22namespace%22%3A%20%22custom%22%2C%0A%20%20%20%20%20%20%22key%22%3A%20%22id%22%2C%0A%20%20%20%20%20%20%22value%22%3A%20%2216a3a6dd%22%0A%20%20%20%20%7D%0A%20%20%7D%0A%7D)

```javascript
import { authenticate } from "../shopify.server";


export const loader = async ({request}) => {
  const { admin } = await authenticate.admin(request);
  const response = await admin.graphql(
    `#graphql
  query($identifier: CustomerIdentifierInput!) {
    customer: customerByIdentifier(identifier: $identifier) {
      id
      amountSpent {
        amount
        currencyCode
      }
    }
  }`,
  {
    variables: {
        "identifier": {
            "customId": {
                "namespace": "custom",
                "key": "id",
                "value": "16a3a6dd"
            }
        }
    },
  },
  );
  const json = await response.json();
  return json.data;
}
```

##### GQL

```
query($identifier: CustomerIdentifierInput!) {
  customer: customerByIdentifier(identifier: $identifier) {
    id
    amountSpent {
      amount
      currencyCode
    }
  }
}
```

##### cURL

```
curl -X POST \
https://your-development-store.myshopify.com/admin/api/2025-10/graphql.json \
-H 'Content-Type: application/json' \
-H 'X-Shopify-Access-Token: {access_token}' \
-d '{
"query": "query($identifier: CustomerIdentifierInput!) { customer: customerByIdentifier(identifier: $identifier) { id amountSpent { amount currencyCode } } }",
 "variables": {
    "identifier": {
      "customId": {
        "namespace": "custom",
        "key": "id",
        "value": "16a3a6dd"
      }
    }
  }
}'
```

##### React Router

```
import { authenticate } from "../shopify.server";

export const loader = async ({request}) => {
  const { admin } = await authenticate.admin(request);
  const response = await admin.graphql(
    `#graphql
  query($identifier: CustomerIdentifierInput!) {
    customer: customerByIdentifier(identifier: $identifier) {
      id
      amountSpent {
        amount
        currencyCode
      }
    }
  }`,
  {
    variables: {
        "identifier": {
            "customId": {
                "namespace": "custom",
                "key": "id",
                "value": "16a3a6dd"
            }
        }
    },
  },
  );
  const json = await response.json();
  return json.data;
}
```

##### Node.js

```
const client = new shopify.clients.Graphql({session});
const data = await client.query({
  data: {
    "query": `query($identifier: CustomerIdentifierInput!) {
      customer: customerByIdentifier(identifier: $identifier) {
        id
        amountSpent {
          amount
          currencyCode
        }
      }
    }`,
    "variables": {
        "identifier": {
            "customId": {
                "namespace": "custom",
                "key": "id",
                "value": "16a3a6dd"
            }
        }
    },
  },
});
```

##### Ruby

```
session = ShopifyAPI::Auth::Session.new(
  shop: "your-development-store.myshopify.com",
  access_token: access_token
)
client = ShopifyAPI::Clients::Graphql::Admin.new(
  session: session
)

query = <<~QUERY
  query($identifier: CustomerIdentifierInput!) {
    customer: customerByIdentifier(identifier: $identifier) {
      id
      amountSpent {
        amount
        currencyCode
      }
    }
  }
QUERY

variables = {
  "identifier": {
    "customId": {
      "namespace": "custom",
      "key": "id",
      "value": "16a3a6dd"
    }
  }
}

response = client.query(query: query, variables: variables)
```

## Input variables

JSON

```json
{
  "identifier": {
    "customId": {
      "namespace": "custom",
      "key": "id",
      "value": "16a3a6dd"
    }
  }
}
```

## Response

JSON

```json
{
  "customer": {
    "id": "gid://shopify/Customer/544365967",
    "amountSpent": {
      "amount": "8305.6",
      "currencyCode": "USD"
    }
  }
}
```