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Swagger CodeGen

As explained in Building Web APIs with ASP.NET Core

An open-source command-line tool that generates client libraries, server stubs, and documentation interfaces from Swagger API definitions.

Swagger Codegen is an open-source command-line tool that turns Swagger API definitions into generated client libraries, server stubs, or documentation interfaces. It belongs to a broader Swagger tooling workflow for publishing and consuming an API contract. section 12.1.4

A practical documentation workflow uses the API definition as the generator input:

  • Run the API project and open its Swagger UI dashboard. section 12.1.4
  • Open the generated swagger.json link and save the definition locally. section 12.1.4
  • Import the definition into Swagger Editor, whose Generate Client feature uses Swagger Codegen. section 12.1.4

Generating a static API interface

A local web API exposes its Swagger definition at a swagger.json URL. Importing that file into Swagger Editor produces a static HTML-based API documentation interface, using Swagger Codegen for generation. section 12.1.4

How Building Web APIs with ASP.NET Core covers it

How deep it goes
Defines the CLI and demonstrates an Editor-based generation workflow, but does not detail templates, commands, or generated code internals.
Examples
Uses a locally saved swagger.json file imported into Swagger Editor to generate an HTML-based documentation interface.
What it assumes
Assumes an API project exposing a Swagger definition through Swagger UI and a locally saved swagger.json file.
What you can do after
Apply it via Swagger Editor to generate a static API documentation interface from an exported Swagger definition.
How it connects
Connects Swagger definitions with Swagger UI, Swagger Editor, SwaggerHub, client generation, and static API documentation.
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Related concepts

This explainer was generated by Manning's knowledge graph from the text of Building Web APIs with ASP.NET Core. The section links point to the parts of the book it draws on.