API docs generator with OpenAPI and code samples

An API docs generator with OpenAPI and code samples typically means a tool or workflow that:

1. Reads an OpenAPI spec (openapi.json / openapi.yaml)
2. Generates human-friendly documentation pages
3. Shows example requests/responses
4. Includes code samples in multiple languages, like:
   • cURL
   • JavaScript / Fetch / Axios
   • Python / Requests
   • Java / OkHttp
   • Go / net/http

Common options

1) Redoc / Redocly

• Great-looking API docs from OpenAPI
• Supports code samples via extensions/plugins
• Good for developer portals

2) Swagger UI

• Easy interactive docs
• Strong ecosystem
• Code samples are possible, though usually less polished than dedicated docs tools

3) Stoplight

• Good for design + docs + mock servers
• OpenAPI-first workflow
• Supports examples and code snippets

4) Scalar

• Modern OpenAPI docs UI
• Better UX for code samples and API exploration in many cases

5) Slate / Docusaurus / MkDocs + OpenAPI plugins

• Best if you want a custom docs site
• Combine narrative docs with auto-generated API reference sections

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If you want code samples in docs

Your OpenAPI spec should include:

• summary / description
• examples for request bodies and responses
• example values for parameters
• schema descriptions

Example:

paths:
  /users:
    get:
      summary: List users
      responses:
        '200':
          description: A list of users
          content:
            application/json:
              example:
                users:
                  - id: 1
                    name: Alice

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Best practice setup

A good production setup is:

• OpenAPI as source of truth
• Generated docs site
• Auto-generated code samples from the spec
• CI validation to ensure the spec is valid
• Published docs on every API release

Example stack:

• OpenAPI 3.1
• Redocly or Scalar for docs
• OpenAPI Generator for SDKs / client snippets
• GitHub Actions for validation and publishing

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If you want to build one yourself

A simple architecture:

• Parse OpenAPI spec
• Render endpoints grouped by tags
• For each operation:
  • show method/path
  • show description
  • show auth requirements
  • show request/response examples
  • generate code samples using templates
• Publish as static site

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If you want, I can also provide one of these:

1. A recommended tool comparison
2. A sample OpenAPI file with code samples
3. A Node.js or Python implementation
4. A full docs site template using Docusaurus / Redoc / Swagger UI