Using graphql storefront api mutations

[young1c]

I am testing and building a headless shopify using gatsby-shopify-starter template. (developing in React)

As far as I know I can easily query all the product and collection information with the help of 'gatsby-source-shopify'.

However I am having trouble using Storefront API, specially creating a customer using mutation.

I used gatsby-source-graphql plugin to build the admin graphql schema :

{
            resolve: `gatsby-source-graphql`,
            options: {
                typeName: 'ShopifyAdmin',
                fieldName: 'admin',
                url: `https://storedomain.myshopify.com/admin/api/2021-07/graphql.json`,
                headers: {
                    'X-Shopify-Access-Token': process.env.SHOPIFY_SHOP_PASSWORD,
                },
                fetchOptions: {
                    method: 'POST',
                },
            },
        }

My question is: How would you be able to use mutation to the https://fingersuit-japan.myshopify.com/admin/api/2021-07/graphql.json Do I need to install and use apollo client in order to use mutation?

Already tested with GraphiQL app and with Insomnia the following GraphQL query:

mutation customerCreate($input: CustomerCreateInput!) {
  customerCreate(input: $input) {
    customerUserErrors {
      code
      field
      message
    }
    customer {
      id
    }
  }
}

Now how am I able to do this in my headless shopify-gatsby app using React? Are there any guides for it?