utoipa

What problem does it solve?

Automatically generates accurate OpenAPI specifications for Rust APIs by deriving schemas and documenting endpoints using utoipa macros, ensuring consistent, up-to-date API docs across projects.

Core Features & Use Cases

• Derives ToSchema/OpenApi implementations from Rust structs and enums.
• Documents endpoints with #[utoipa::path] for automated OpenAPI generation.
• Integrates with popular Rust frameworks (Axum, Actix-web, Rocket) to auto-collect docs and serve UI (Swagger UI, Redoc, Rapidoc).
• Configures security schemes, parameters, and complex types in a type-safe manner.

Quick Start

Add OpenApi derivations and path annotations to your Rust project and expose the generated spec via a UI endpoint.