Software Architecture

API Spec Viewer

View and explore OpenAPI (Swagger) specifications. Browse endpoints, schemas, parameters, and responses in an interactive viewer.

Estimated time: 5-15 min
Difficulty level: Intermediate
Privacy: Runs locally
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API Spec Viewer

View and explore OpenAPI (Swagger) specifications. Paste your spec or use the example.

Sample User API

v1.0.0OpenAPI 3.0.33 endpoints5 operations4 schemas

A sample API for managing users demonstrating OpenAPI specification features.

Servers

https://api.example.com/v1https://staging-api.example.com/v1

Endpoints

Schemas

Understanding OpenAPI Specifications

What is OpenAPI?

OpenAPI (formerly Swagger) is a specification for describing REST APIs. It defines endpoints, request/response formats, authentication, and more in a machine-readable format.

Key Components

  • Info: API title, version, description
  • Servers: Base URLs for the API
  • Paths: Available endpoints and operations
  • Components: Reusable schemas and security definitions

HTTP Methods

  • • GET: Retrieve resources
  • • POST: Create new resources
  • • PUT: Update/replace resources
  • • PATCH: Partial updates
  • • DELETE: Remove resources

Best Practices

Use meaningful operation IDs. Document all parameters and responses. Include example values. Version your API. Keep your spec in sync with implementation.