2018-11-08 19:23:39 +05:30
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# GraphQL API (Alpha)
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> [Introduced][ce-19008] in GitLab 11.0.
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[GraphQL](https://graphql.org/) is a query language for APIs that
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allows clients to request exactly the data they need, making it
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possible to get all required data in a limited number of requests.
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The GraphQL data (fields) can be described in the form of types,
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allowing clients to use [clientside GraphQL
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libraries](https://graphql.org/code/#graphql-clients) to consume the
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API and avoid manual parsing.
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Since there's no fixed endpoints and datamodel, new abilities can be
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added to the API without creating breaking changes. This allows us to
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have a versionless API as described in [the GraphQL
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documentation](https://graphql.org/learn/best-practices/#versioning).
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## Enabling the GraphQL feature
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The GraphQL API itself is currently in Alpha, and therefore hidden behind a
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feature flag. You can enable the feature using the [features api][features-api] on a self-hosted instance.
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For example:
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```shell
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2019-02-13 22:33:31 +05:30
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curl --data "value=100" --header "PRIVATE-TOKEN: <your_access_token>" https://gitlab.example.com/api/v4/features/graphql
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2018-11-08 19:23:39 +05:30
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```
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## Available queries
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A first iteration of a GraphQL API includes a query for: `project`. Within a project it is also possible to fetch a `mergeRequest` by IID.
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## GraphiQL
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The API can be explored by using the GraphiQL IDE, it is available on your
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instance on `gitlab.example.com/-/graphql-explorer`.
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[ce-19008]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/19008
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[features-api]: ../features.md
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