Introducing Dynamic Variables: Generate Realistic Test Data Instantly

Dynamic variables are built-in values that are generated automatically at request execution time. No manual edits. No helper scripts. No duplicate test data issues. If you regularly need timestamps, random values, UUIDs, or unique identifiers in your API requests, dynamic variables handle it for you automatically. Unlike environment, collection, or global variables that you define and manage yourself, dynamic variables are available out of the box and generate a fresh value every time a request runs. Under the hood, Requestly uses Faker.js to generate realistic test data, so your payloads don’t look fake or repetitive. What are dynamic variables? Dynamic variables are special placeholders that resolve to automatically generated values at runtime. They use a $ prefix and are accessed with this template syntax: {{$variableName}} Every time the request executes, the variable produces a new value. For example: {{$randomUUID}} → Generates a new UUID {{$timestamp}} → Current UNIX timestamp {