How to complete the challenge `GET /todos (200) ? filter description regex`

By Alan RichardsonPublished 2026-07-31

How to issue a GET request on a top level entity endpoint and filter todos by matching the description with a regular expression.

GET /todos (200) ? filter description regex

Issue a GET request on the /todos end point with a regular expression filter on description that returns todos with non-empty descriptions.

description~=.*fixture.* means return todos where the description matches the regular expression
most tools and browsers will encode any reserved characters for you when sending the request
the response should contain at least one todo
every returned todo should have a non-empty description
every returned description should match the regular expression

Basic Instructions

Create or update a todo so it has a description containing fixture
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 a regular expression filter:
- https://apichallenges.com/todos?description~=.*fixture.*
The response status code should be 200 because the request is accepted
Check that every returned description is non-empty and contains fixture

Try it now

If you need a matching todo, create one with a non-empty description containing fixture. See the solution.

POST /todos to create a regex filter fixture

Filter by regular expression:

GET /todos?description~=.*fixture.* to filter descriptions by regex

Example Request

> GET /todos?description~=.*fixture.* 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": 8,
      "title": "regex filter fixture",
      "doneStatus": false,
      "description": "created fixture for regex filter"
    }
  ]
}

Experiment with this endpoint

How to complete the challenge GET /todos (200) ? filter description regex