In GraphQL, you can cast a value into a specific type by using type coercion. Type coercion allows you to convert a value from one type to another, such as converting a string into an integer or a boolean.To cast a value into a specific type in GraphQL, you can use built-in scalar types like Int, Float, String, Boolean, ID, etc. When defining a field in your GraphQL schema, you can specify the type of the field using these scalar types.