Magic variables

Magic variables are generated fresh on each substitution. They start with $ and are referenced inside {{ }}.

Variable	Description
`{{$uuid}}`	Random UUID
`{{$random.uuid}}`	Alias for UUID
`{{$timestamp}}`	Unix timestamp (milliseconds)
`{{$isoTimestamp}}`	ISO-8601 timestamp
`{{$date}}`	Current date (`yyyy-MM-dd`)
`{{$randomInt}}`	Random integer (0–1000)

Example

Use them in headers, URLs, or JSON bodies:

POST https://echo.kulala.app/post HTTP/1.1
Content-Type: application/json
Accept: application/json

{
  "uuid": "{{$uuid}}",
  "timestamp": "{{$timestamp}}",
  "date": "{{$date}}",
  "randomInt": "{{$randomInt}}"
}

Multipart boundaries often combine a static prefix with $timestamp:

POST https://echo.kulala.app/post HTTP/1.1
Content-Type: multipart/form-data; boundary=boundary-{{$timestamp}}

--boundary-{{$timestamp}}
Content-Disposition: form-data; name="first"; filename="multipart-form-data.txt"

< ./multipart-form-data.txt
--boundary-{{$timestamp}}--