How to complete the challenge GET /todos (200) ? filter and _sortBy

By Alan Richardson · Published 2026-07-30

How to issue a GET request on a top level entity endpoint, filter the returned todos, and sort the filtered results.

GET /todos (200) ? filter and _sortBy

Issue a GET request on the /todos end point with a query filter and a query parameter to sort the filtered todos.

• todo fields can be used as URL parameters to filter collection results
• _sortBy is the URL parameter used to sort collection results
• prefix a sort field with - to sort descending
• for example, doneStatus=false&_sortBy=-id returns only not done todos, sorted by id from highest to lowest

Basic Instructions

• Issue a GET request to end point "/todos"
  • https://apichallenges.com/todos
• The request should have an X-CHALLENGER header to track challenge completion
• Add doneStatus=false and _sortBy=-id as URL parameters:
  • https://apichallenges.com/todos?doneStatus=false&_sortBy=-id
• The response status code should be 200 because the request is accepted
• Check that all returned todos have doneStatus set to false, and that the ids are descending

Try it now

GET /todos?doneStatus=false&_sortBy=-id to filter and sort todos

Example Request

> GET /todos?doneStatus=false&_sortBy=-id HTTP/1.1
> Host: apichallenges.com
> User-Agent: rest-client
> X-CHALLENGER: x-challenger-guid
> Accept: application/json

Example Response

< HTTP/1.1 200 OK
< Connection: close
< Content-Type: application/json
< X-Challenger: x-challenger-guid

Returned body:

{
  "todos": [
    {
      "id": 10,
      "title": "not done with highest id",
      "doneStatus": false,
      "description": ""
    },
    {
      "id": 3,
      "title": "not done with lower id",
      "doneStatus": false,
      "description": ""
    }
  ]
}

Experiment with this endpoint