GraphQL supports three main operation types—queries, mutations, and subscriptions. We have already seen several examples of basic queries in this guide, and on this page, you’ll learn in …

Send a GraphQL query to your API and get precisely the data you request — no over-fetching, no under-fetching. Predictable responses keep apps efficient and performant.

GraphQL is a query language for your API, and a server-side runtime for executing queries using a type system you define for your data. The GraphQL specification was open-sourced in 2015 …

Every GraphQL service defines a set of types that completely describe the set of possible data we can query on that service. Then, when requests come in, they are validated and executed …

You can think of each field in a GraphQL query as a function or method of the previous type which returns the next type. This is exactly how GraphQL works—each field on each type is backed …

Generate types for GraphQL queries in TypeScript, Swift, golang, C#, C++, and more.

GraphQL implementations that adhere to the GraphQL over HTTP specification will support the POST HTTP method by default, but may also support GET requests for query operations.

On this page, you’ll learn how to use mutation operations to write data using GraphQL, and do so in a way that supports client use cases. All of the features of GraphQL operations that apply to …

This guide outlines common HTTP and GraphQL errors, what they mean, and how to debug them effectively. It follows the recommendations of the GraphQL over HTTP spec (draft), which …

The query parameter is required and will contain the source text of a GraphQL document. Note that the term query here is a misnomer: the document may contain any valid GraphQL …