JSONGraphQL

JSONGraphQL is a term used to describe architectures and libraries that apply the GraphQL query language in conjunction with JSON-based payloads. It emphasizes using JSON as the primary encoding for both requests and responses while leveraging GraphQL's schema and type system.

In typical implementations, a client sends a JSON object that contains a GraphQL operation and optional variables, for example: { "query": "query GetUser($id: ID!) { user(id: $id) { name email } }", "variables": { "id": "123" } }. The server parses the JSON, executes the GraphQL operation against the schema, and returns a JSON response with a data field and, if applicable, an errors field, following the GraphQL specification.

Variants range from wrappers that translate JSON requests into GraphQL queries to libraries that define a JSON-centric query language that compiles to GraphQL. Some systems support batched requests, persisted queries, and extensions for caching, tracing, or real-time updates via GraphQL subscriptions.

JSONGraphQL is often used to bridge JSON-centric services with GraphQL endpoints, or to expose GraphQL services through REST-like transports. Advantages include compatibility with existing JSON tooling and straightforward integration in environments where HTTP payloads are JSON-only. Limitations include potential verbosity, the need to validate and limit query depth and complexity, and the added layer of encoding compared to native GraphQL transport.

See also GraphQL, JSON, GraphQL over HTTP, and API gateways.