openapi-client-axios VS fastify-swagger

Thanks for the feedback!

There is a full interactive sandbox example on the front/landing page https://openapistack.co

But point taken, will make sure code examples are visible on the overview page

There are also some tricks to make it easier, like using swagger/openapi to generate strongly typed API client (for Typescript) to your backend. There a package that generates the types: https://www.npmjs.com/package/openapi-client-axios

CoreAPI is deprecated, use OpenAPI instead. On the Javascript/Typescript side I personally like to use OpenAPI Client Axios to generate the client for me.

And typegen is openapi-client-axios-typegen. (You can also try swaxios, but I failed to run it.)

With Speakeasy, you can create client SDKs based on an OpenAPI specification. Fastify ships with the @fastify/swagger plugin, which provides convenient shortcuts for generating good OpenAPI specifications. We'll start this tutorial by registering @fastify/swagger in a Fastify project to generate a spec.

First let’s get our current OpenAPI specification out of Fastify and onto the file system. If you have not added the https://github.com/fastify/fastify-swagger plugin first go do that. Then use this simple script I called generate-spec.ts to write your OpenAPI specification to the filesystem.

The fastify-swagger docs has an example https://github.com/fastify/fastify-swagger

@fastify/swagger is a fastify plugin to serve a Swagger UI, using Swagger (OpenAPI v2) or OpenAPI v3 schemas automatically generated from your route schemas, or from an existing Swagger/OpenAPI schema.

On the Node.js framework side of things, Fastify has support for Swagger with the fastify-swagger plugin.

With this approach, backend can be any programming languages that support OpenAPI or Swagger. Personally, I use fastify-swagger; but I can also be things like Python's FastAPI or Golang's Gin/Buffalo/Native.