All Operators

Request Helpers

• body - Reads parameters from the request payload.
• queryParam - Reads parameters from the query string of the request.
• pathParam - Reads parameters from the request path, matched using regular expressions.
• header - Reads values from the request headers.
• cookie - Reads cookie values from the request.

Faker Data Helpers

• faker - Generates realistic dummy data for various data types, entities, lorem ipsum, and more.

Operators

Comparison Operators	Arithmetic Operations	Array & Set Operators	String & Encoding Operators	Type Checking
eq	add	sort	lowercase	isNumber
gt	subtract	oneOf	uppercase	isInteger
lt	multiply	someOf	concat	isDate
lte	divide	reverse	contains
gte	modulo		padStart
	floor		padEnd
	ceil		split
	round		base64
	toFixed		base64Decode
			urlEncode
			urlDecode
			slugify
			stripTags
			replace
			trim
			len

JSON & Object Manipulation

• len - Calculates the length of arrays, strings, or numbers.
• object - Creates a JSON object from a list of key-value pairs.
• array - Creates a list of items.
• json - Converts JavaScript objects and arrays to their JSON string representation.
• jsonParse - Converts a JSON-encoded string into a usable object or array within the template engine.

JWT Helpers

• jwtHeader - Extracts the header portion of a JWT token.
• jwtPayload - Extracts the payload (claims) portion of a JWT token.

Control Flow

• switch - Selects content based on a value.
• case - Matches a value inside a switch block.
• default - Provides fallback content inside a switch block.
• if...else - Renders content conditionally, with an optional fallback.
• unless - Renders content when a condition is false; for example, {{#unless @last}},{{/unless}} adds commas between array items.
• repeat - Repeats content a fixed or random number of times.
• each - Iterates over items in a collection.

Inside each, use this to access the current item and @index, @first, and @last for iteration context. The repeat block supports @index and @total. These are context values, not operators.

Date

• now - Current date-time, with optional relative offset and format.
• dateParse - Parse a date string or timestamp into an internal date object for chaining.
• dateAdd - Add or subtract a duration from a date and return a formatted result.
• dateDiff - Calculate the difference between two dates in a given unit.

Stateful Mocks

• step-counter - Maintains a numeric counter across requests with inc, get, set, and reset.
• data-store - Stores and retrieves values across requests.
• list - Maintains an ordered collection across requests with push, pop, get, delete, reset, size, shift, unshift, contains, push-unique, update, and find.

Dataset Helpers

• dataset - Loads matching records from an attached dataset into a named variable as an array.
• dataset-one - Loads one matching record from an attached dataset into a named variable.
• variables.<name> - Accesses the result of a dataset declaration. This is a variable reference, not a helper.

HTTP Callout Helpers

Use these helpers when building a dynamic HTTP callout payload.

• oReqBody - Reads a field from the original request body.
• oReqQueryParam - Reads a query parameter from the original request.
• oResBody - Reads a field from the mocked response body, for asynchronous callout workflows.