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GraphQL Validator

GraphQL schema (SDL)

type Query {
  user(username: String): User
}

type User {
  username: String!
  friends: [User!]!
}1
type Query {
2
  user(username: String): User
3
}
4

5
type User {
6
  username: String!
7
  friends: [User!]!
8
}

GraphQL query

query {
  user(username: "alice") {
    friends {
      username
    }
  }
}1
query {
2
  user(username: "alice") {
3
    friends {
4
      username
5
    }
6
  }
7
}

Validation result

The GraphQL query validates successfully against the provided schema.

GraphQL Validator

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See also

GraphQL Parse Tree Viewer

Visualize the parse tree of a GraphQL document.

GraphQL Schema Validator

Check the validity of GraphQL schemas.

GraphQL AST Viewer

Visualize the abstract syntax tree (AST) of a GraphQL document.

Awesome GraphQL

A curated list of awesome links, tutorials, and resources on GraphQL.

GraphQL validation

A short explanation of GraphQL schemas, queries, and validation.