swagger-codegen is a product name that does not appear among the candidates, and its maker Swagger (swagger.io) is listed as a Swagger/OpenAPI toolset rather than the code generator itself 5. The closest match for the same job, generating client code from an OpenAPI spec, is OpenAPI Generator, which offers 50+ client generators and customizable templates 1. Alternatives include Kubb for TypeScript types and clients from an API spec 7, NSwag for the .NET and TypeScript OpenAPI toolchain [10

1. 1

   OpenAPI Generatoropenapi-generator.techwebsite read, tools not yet checked

   Generates client code in 50+ languages from any OpenAPI document, with templates that can be replaced by your own Mustache-based templates 1.

   WebsiteDocs

2. 2

   Kubbkubb.devverified and signed

   Generates TypeScript types, fetch or axios clients, TanStack Query hooks, Zod schemas and MSW mocks from an OpenAPI spec 7.

   WebsiteDocs

   +1 community tools built for it

   for agents: changelog · documentation

3. 3

   NSwagnswag.orgverified and signed

   Swagger/OpenAPI toolchain for .NET, ASP.NET Core and TypeScript that generates clients and specifications 10.

   Website

   +1 community tools built for it

   for agents: OpenAPI · Swagger · CodeGen

4. 4

   Fernbuildwithfern.comverified and signed

   Generates SDKs in TypeScript, Python, Go, Java, C#, PHP, Ruby, Swift and Rust from API definitions 9.

   WebsiteDocsPricingGet started

   for agents: tools · middleware · ai