GraphQL to REST Mapping Helper

GraphQL to REST mapping is the process of identifying the equivalent REST endpoint structure for each GraphQL operation. While GraphQL uses a single endpoint with typed queries, REST uses multiple endpoints with HTTP methods (GET, POST, PUT, PATCH, DELETE) to represent CRUD operations on resources. Our graphql to rest mapping helper analyzes GraphQL queries and mutations and infers the most appropriate REST endpoint for each top-level field — including the HTTP method, resource path, query parameters, and request body structure. This is useful for migration planning, API design, and documentation.

1. 1. Paste Your GraphQL Operation: Enter any GraphQL query, mutation, or subscription. The tool parses the operation and extracts top-level fields, arguments, and variables. All processing happens locally in your browser — your GraphQL code never leaves your device.
2. 2. Configure Base Path and Format: Set the REST base path (e.g. /api/v1) and choose the output format — Markdown table for documentation, JSON for programmatic use, or partial OpenAPI paths for API specification generation.
3. 3. Review and Export: View the generated REST mapping with HTTP methods, paths, descriptions, and request/response details. Copy to clipboard or download as a Markdown, JSON, or OpenAPI file.

• Query with id argument: Maps to GET /resources/{id} — fetch a single resource by ID.
• Query without id argument: Maps to GET /resources — list resources, with filter/pagination arguments becoming query parameters.
• Mutation starting with create/add: Maps to POST /resources — create a new resource with a JSON request body.
• Mutation starting with update/edit: Maps to PUT /resources/{id} or PATCH /resources/{id} — update an existing resource.
• Mutation starting with delete/remove: Maps to DELETE /resources/{id} — delete a resource.
• Subscription: Maps to a WebSocket or Server-Sent Events (SSE) endpoint for real-time event streaming.

GraphQL uses a single endpoint (typically /graphql) where clients specify exactly what data they need in a query. REST uses multiple endpoints where each URL represents a resource and the HTTP method indicates the operation. GraphQL reduces over-fetching and under-fetching by letting clients request only the fields they need. REST is simpler to cache, easier to understand for non-developers, and better supported by standard HTTP tooling. Our graphql to rest mapping helper bridges the two paradigms by generating the REST equivalent of any GraphQL operation — useful for teams evaluating migration, building hybrid APIs, or documenting both interfaces.