aspnet-minimal-api-openapi

To generate correct OpenAPI documentation for Minimal APIs, define strongly typed request and response DTOs, use typed Results for multiple responses, and apply .NET 10 OpenAPI document and schema transformers for operation metadata. This ensures schemas and summaries are accurate for client generation.

Minimal API Swagger documentation shows incomplete schemas when endpoints lack strongly typed DTOs, validation attributes, or proper operation naming. Applying schema transformers and explicit model property descriptions ensures the generated OpenAPI metadata is consistent and correct.

Structure scalable Minimal API endpoints by using MapGroup() for organized routes, applying endpoint filters, and organizing logic into feature-based classes. This approach keeps APIs maintainable while producing correct Swagger documentation as the API grows.

Yes, .NET 10 OpenAPI support allows you to add operation metadata like IDs, summaries, and descriptions to Minimal API endpoints. You can customize document and schema transformers to enforce consistent tagging, servers, and security across your API.

The best way to handle multi-response Results in Minimal API OpenAPI generation is using typed Results. This explicitly defines multiple response types in your endpoint contracts, allowing the OpenAPI generator to accurately map each possible response status and content type.

Add validation-aware DTOs to Minimal API endpoints by defining explicit record types with validation attributes for requests and responses. This ensures the OpenAPI output correctly reflects validation constraints and property naming for client generation.