Complete example

This request combines custom-field filtering, selected properties, sorting, pagination and an expanded project:

bash

curl -G \
  -H 'Authorization: bearer YourTokenHere' \
  --data-urlencode 'filter={
    "custom_review_date": "Next Month",
    "custom_reference": "^CX-",
    "custom_region": [
      "EMEA",
      "APAC"
    ]
  }' \
  --data-urlencode 'fields=[
    "name",
    "plannedStart",
    "project.name",
    "custom_review_date",
    "custom_reference",
    "custom_region"
  ]' \
  --data-urlencode 'sort=plannedStart/desc' \
  --data-urlencode 'expand=project' \
  --data-urlencode 'page=2' \
  'https://app.celoxis.com/psa/api/v2/tasks'

The custom-field keys are illustrative. Use the keys shown in your in-app API Property Reference.