Postman Dynamic Variables

Dynamic variable, as the name suggests, generates random data to your API requests and collection run. It is like a random library in a programming language. It generates random data each time in response like a random number, alphabets, alphanumeric or color, etc.

A dynamic variable name starts with '$.' In the request URL section, a dynamic variable should be written in {{__}} format.

Let's say you have to pass an integer number from 1 to 1000, so for that, you need to add {{$randomInt}}.

Like the above example of the number variable, Postman supports so many other dynamic variables as well.

Some important Dynamic Variables are

Numbers, Texts and Colors

Variable Name	Description
$randomAlphaNumeric	A random alphanumeric character
$randomInt	A random integer between 1 and 1000
$randomColor	A random color
$randomHexColor	A random hex value
$randomAbbreviation	A random abbreviation
$randomBoolean	A random boolean value like true or false

Address, Location, Phone

Variable Name	Description
$randomCountry	A random country
$randomCountryCode	Random country code of two letters (ISO 3166-1 alpha-2)
$randomCity	A random city name
$randomStreetName	A random street name
$randomStreetAddress	A random street address
$randomLatitude	A random latitude coordinate
$randomLongitude	A random longitude coordinate
$randomPhoneNumber	A random 10-digit phone number
$randomPhoneNumberExt	A random phone number with an extension of 12 digits

Profession

Variable Name	Description
$randomJobType	A random job type
$randomJobTitle	A random job title
$randomJobDescriptor	A random job descriptor
$randomJobArea	A random job area

Names

Variable Name	Description
$randomFullName	A random first and last name
$randomNamePrefix	A random name prefix
$randomNameSuffix	A random name suffix
$randomFirstName	A random first name
$randomLastName	A random, last name

Dates

Variable Name	Description
$randomWeekday	A random weekday
$randomMonth	A random month
$randomDateRecent	A random recent datetime
$randomDateFuture	A random future datetime
$randomDatePast	A random past datetime

Databases

Variable Name	Description
$randomDatabaseType	A random database type
$randomDatabaseCollation	A random database collection
$randomDatabaseColumn	A random database column name

Domains, Username, and Emails

Variable Name	Description
$randomUrl	A random URL
$randomUserName	A random username
$randomEmail	A random email address
$randomDomainName	A random domain name
$randomDomainSuffix	A random domain suffix

Internet and IP address

Variable Name	Description
$randomIP	A random IPv4 address
$randomIPV6	A random IPv6 address
$randomPassword	A random alphanumeric password of 15-character
$randomUserAgent	A random user agent
$randomProtocol	A random internet protocol
$randomMACAddress	A random MAC address

Files and Directories

Variable Name	Description
$randomCommonFileName	A random file name
$randomFileName	A random file name (includes uncommon extensions)
$randomFileExt	A random file extension (includes uncommon extensions)
$randomFileType	A random file type including uncommon file types
$randomCommonFileType	A random, common file type
$randomCommonFileExt	A random, common file extension
$randomDirectoryPath	A random directory path

Images

Variable Name	Description
$randomImage	A random image
$randomImageUrl	A URL for a random image
$randomAnimalsImage	A URL for a random animal image
$randomCityImage	A URL for a random city image
$randomFoodImage	A URL for a random food image
$randomTransportImage	A URL for a random transportation image
$randomSportsImage	A URL for a random sports image
$randomTechnicsImage	A URL for a random tech image

Business

Variable Name	Description
$randomCompanyName	A random company name
$randomCompanySuffix	A random company suffix (e.g., Inc, LLC, Group)
$randomBs	A random phrase of business-speak

Finance

Variable Name	Description
$randomCurrencyName	A random currency name
$randomCurrencySymbol	A random currency symbol
$randomCurrencyCode	A random 3-letter currency code (ISO-4217)
$randomBitcoin	A random bitcoin address
$randomTransactionType	A random transaction type (e.g., invoice, payment, deposit)
$randomBankAccount	A random bank account number of 8-digit
$randomBankAccountName	A random bank account name (e.g., savings account, checking account)