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Take-Home API

A ready-made, well-designed REST API mimicking many real-world scenarios. Each scenario models a realistic business domain — airline booking, e-commerce, food delivery, and more — fully implemented and served out of the box. No backend to design, no server to write. Just a real API with a friendly, well-documented flow, ready to run.

Why Take-Home API?

Most coding challenge and system design tools ask you to build a backend from scratch. This one flips that: the API already exists, fully working, and you learn by using it. That’s a closer match to real engineering work — consuming an API you didn’t design, understanding its data model, and building something on top of it.

What You Can Do

  1. Build a frontend against a well-modeled, realistic API
  2. Learn how a REST API works by following real use-case flows
  3. Write integration tests against a live, realistic target
  4. Take home assessments — explore the API and see how you’d use it
  5. AI agent integration — use the provided MCP server for your AI workflows

Scenarios

Each scenario is a self-contained API namespace, versioned by the complexity and breadth of features:
  • v1 → core happy path
  • v2 → expanded use cases, authentication, and more endpoints
Start with v1 to learn the basics, then move to v2 to explore more complex flows and authentication patterns.

Getting Started

Browse the Travel scenario to see examples of the API in action. You can explore the OpenAPI specification for each API version and try endpoints directly.