{
  "context": "This criteria evaluates how well the engineer uses koa-route's parameter extraction capabilities to build a URL shortener API. The focus is on correctly using route.get(), route.post(), route.delete() with path patterns containing parameters, and properly handling extracted parameters in route handlers.",
  "type": "weighted_checklist",
  "checklist": [
    {
      "name": "GET route with parameter",
      "description": "Uses route.get() with a path pattern like '/:shortCode' to define the redirect endpoint, correctly extracting the shortCode parameter from the URL path",
      "max_score": 25
    },
    {
      "name": "GET stats route",
      "description": "Uses route.get() with path pattern '/stats/:shortCode' to define the statistics endpoint, correctly extracting the shortCode parameter",
      "max_score": 20
    },
    {
      "name": "DELETE route with parameter",
      "description": "Uses route.delete() (or route.del()) with path pattern '/links/:shortCode' to define the delete endpoint, correctly extracting the shortCode parameter",
      "max_score": 20
    },
    {
      "name": "POST route definition",
      "description": "Uses route.post() to define the /shorten endpoint for creating short links",
      "max_score": 10
    },
    {
      "name": "Parameter usage in handlers",
      "description": "Route handlers correctly receive and use the extracted parameters (e.g., (ctx, shortCode) => {...}) according to koa-route's handler signature where parameters follow the ctx argument",
      "max_score": 25
    }
  ]
}