It is verbose, You often need to define type twice in Open API definition and in Java/Typescript. In addition, swagger UI is not very good. Tooling like editor

It is verbose, You often need to define type twice in Open API definition and in Java/Typescript. In addition, swagger UI is not very good. Tooling like editor support, testing, benchmarking is lacking compared to even Postman. In most cases, there is plenty of good alternatives: - Sharing types - API/SDK client libraries - GraphQL - gRPC - hasura/postgrest - Postman The only good use case for Swagger/OpenAPI is when you need to expose API to third parties, but even then the above solutions can also be applied.