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You can enable the GraphQL API in the General tab of the Setup Tool under the section graphqlservice(beta) by selecting the enable_api checkbox. The API is now available at the URL <server name>/web/delivery. You can access this URL using a POST request using one of the supported REST client applications (GET requests return no value).
Authentication
Since R43 - Not sure if we should publish this as it throws an error
It's possible to only allow specific users access to the GraphQL. This will require a valid valid User with an application key. You can enable authentication in the Setup by enabling the require_authentication option.
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