crystal-gql

graphql-crystal

a graphql implementation for crystal

graphql

GraphQL server library for Crystal

graphql.cr

Oxide is a GraphQL library for Crystal that implements the core GraphQL specification as a low-level foundation. It provides the essential building blocks for creating GraphQL schemas programmatically, enabling dynamic API generation and runtime schema construction. ## Key Features - **Low-Level Schema Definition** — Schemas are built using core type instances like `Schema`, `Field`, and `Type`, providing full control over the AST. - **GraphQL-JS Compatibility** — Error messages, formatting, and suggestions match the reference implementation for consistency. - **LateBoundType Support** — Enables recursive and cyclic type definitions by referencing types by name during schema construction. - **Lazy Execution with Loader** — Includes a synchronous future implementation and `Loader` abstract class for batching operations to prevent N+1 queries. - **Comprehensive Validation** — Implements the GraphQL spec's validation rules for operations, fields, fragments, arguments, values, directives, and variables. ## Philosophy Oxide aims to follow the GraphQL specification as closely as possible, with a focus on enabling dynamic, runtime-generated schemas and providing a foundation for flexible GraphQL APIs in Crystal.