I am needing to test functionality around access tokens and having a Graphiql app connected to my Storefront API just as it exists for Admin would be great.
Thanks for the feedback. At the moment there is no option for that, but you can setup an API client such as Insomnia for the Storefront API to test. If you follow the GraphQL instructions for the Admin API here: https://www.shopify.ca/partners/blog/shopify-graphql-learning-kit you will get a good idea of how to go about that. With the Storefront API however you will need to use the Storefront API endpoint as well as do Auth through the access token: https://shopify.dev/docs/storefront-api/getting-started