$
copilot --idea "Zero-to-Production API in 20 Minutes"
→
Challenge: empty folder to live, secured API with database — only using Copilot CLI
The Challenge
Timer starts now. You have an empty folder and Copilot CLI. In 20 minutes, you need a live API with a database, authentication, API documentation, tests, and proper infrastructure. No copy-pasting from Stack Overflow. No starter templates. Just you and the CLI.
The Rules
1. Every line of code must be generated or written through Copilot CLI
2. Infrastructure must be deployed to Azure
3. The API must have at least 4 CRUD endpoints
4. There must be tests that pass
5. The API must be accessible via a public URL with HTTPS
The Speedrun Route
Minutes 0-3: Scaffold
$
"Create a Node.js REST API with Express for managing a bookshelf.
Include models for books (title, author, isbn, rating, read_date).
Use Express Router with separate route files.
Add input validation with express-validator."
Minutes 3-7: Database
$
"Add Cosmos DB integration using @azure/cosmos with managed identity.
Create a data access layer with CRUD operations.
Add connection pooling and retry logic."
Minutes 7-10: API Docs & Validation
$
"Generate an OpenAPI 3.0 spec for all endpoints.
Add Swagger UI at /api-docs.
Include request/response examples for every endpoint."
Minutes 10-13: Tests
$
"Write integration tests with supertest and Jest.
Cover all CRUD operations, validation errors,
and edge cases (duplicate ISBN, missing fields).
Add a test for the health endpoint."
Minutes 13-18: Deploy
$
"Deploy this to Azure Container Apps with Cosmos DB.
Use managed identity, private endpoints for Cosmos,
and Application Insights for monitoring."
The azure-prepare skill handles the Bicep generation. Then `azd up` to ship it.
Minutes 18-20: Verify
$
"Test the live API:
- POST a few books
- GET the list
- Update a rating
- Delete one
- Verify Swagger UI loads"
Leaderboard Tips
• Use the task agent for running tests — it only shows output on failure
• Don't overthink the data model — start simple, iterate later
• The azure-prepare skill generates production-ready Bicep faster than you can write it
• Practice the flow once before timing yourself
Variations
• **Hard mode**: Add Redis caching and rate limiting
• **Expert mode**: Add GitHub OAuth and per-user bookshelves
• **Insane mode**: Add real-time updates with WebSockets
What You'll Learn
• Rapid application development with AI assistance
• Azure Container Apps deployment workflow
• API design patterns and OpenAPI specification
• The art of clear, specific prompting