Built-in Variables

Rostyman includes built-in dynamic variables that generate random or time-based values at the moment a request is sent. No setup required — just use them directly.

Reference

Variable	Description	Example Output
`{{$randomInt}}`	Random integer between 0 and 999	`742`
`{{$randomFloat}}`	Random float between 0 and 1	`0.4821`
`{{$randomBoolean}}`	`true` or `false`	`true`
`{{$randomUUID}}`	UUID v4	`550e8400-e29b-41d4-a716-446655440000`
`{{$timestamp}}`	Current Unix timestamp (seconds)	`1710000000`
`{{$isoTimestamp}}`	Current ISO 8601 datetime	`2026-03-12T10:30:00.000Z`
`{{$randomEmail}}`	Random email address	`user742@example.com`
`{{$randomFirstName}}`	Random first name	`Alice`
`{{$randomLastName}}`	Random last name	`Johnson`
`{{$randomUrl}}`	Random URL	`https://example-742.com`
`{{$randomIp}}`	Random IP address	`192.168.1.42`

Example Usage

Create a user with random data:

{
  "id": "{{$randomUUID}}",
  "email": "{{$randomEmail}}",
  "name": "{{$randomFirstName}} {{$randomLastName}}",
  "createdAt": "{{$isoTimestamp}}"
}

Unique request ID header:

X-Request-ID: {{$randomUUID}}

Each time you send the request, new values are generated automatically.

Reference​

Example Usage​

Reference

Example Usage