Dynamic variables

Postman uses the faker library to generate dummy data. You can generate random names, addresses, email addresses, and much more. You can use these pre-defined variables multiple times to return different values per request.

You can use these variables like any other variable in Postman. Their values are generated at the time of execution and their names start with a $ symbol e.g. $guid, $timestamp etc.

The following is a list of dynamic variables whose values are randomly generated during the request/collection run.

To use dynamic variables in pre-request or test scripts, you need to use pm.variables.replaceIn(), e.g. pm.variables.replaceIn('{{$randomFirstName}}').


Variable Name Description Examples
$guid A uuid-v4 style guid "611c2e81-2ccb-42d8-9ddc-2d0bfa65c1b4"
$timestamp The current UNIX timestamp in seconds 1562757107, 1562757108, 1562757109
$isoTimestamp The current ISO timestamp at zero UTC 2020-06-09T21:10:36.177Z
$randomUUID A random 36-character UUID "6929bb52-3ab2-448a-9796-d6480ecad36b"

Text, Numbers and Colors

Variable Name Description Examples
$randomAlphaNumeric A random alpha-numeric character 6, "y", "z"
$randomBoolean A random boolean value (true/false) true, false, false, true
$randomInt A random integer between 1 and 1000 802, 494, 200
$randomColor A random color "red", "fuchsia", "grey"
$randomHexColor A random hex value "#47594a", "#431e48", "#106f21"
$randomAbbreviation A random abbreviation SQL, PCI, JSON

Internet and IP Addresses

Variable Name Description Examples
$randomIP A random IPv4 address,
$randomIPV6 A random IPv6 address dbe2:7ae6:119b:c161:1560:6dda:3a9b:90a9
$randomMACAddress A random MAC address 33:d4:68:5f:b4:c7, 1f:6e:db:3d:ed:fa
$randomPassword A random 15-character alpha-numeric password t9iXe7COoDKv8k3, QAzNFQtvR9cg2rq
$randomLocale A random two-letter language code (ISO 639-1) "ny", "sr", "si"
$randomUserAgent A random user agent Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.9.8; rv:15.6) Gecko/20100101 Firefox/15.6.6
Opera/10.27 (Windows NT 5.3; U; AB Presto/2.9.177 Version/10.00)
Mozilla/5.0 (Windows NT 6.2; rv:13.5) Gecko/20100101 Firefox/13.5.6
$randomProtocol A random internet protocol "http", "https"
$randomSemver A random semantic version number 7.0.5, 2.5.8, 6.4.9


Variable Name Description Examples
$randomFirstName A random first name Ethan, Chandler, Megane
$randomLastName A random last name Schaden, Schneider, Willms
$randomFullName A random first and last name Connie Runolfsdottir, Sylvan Fay, Jonathon Kunze
$randomNamePrefix A random name prefix Dr., Ms., Mr.
$randomNameSuffix A random name suffix I, MD, DDS


Variable Name Description Examples
$randomJobArea A random job area Mobility, Intranet, Configuration
$randomJobDescriptor A random job descriptor Forward, Corporate, Senior
$randomJobTitle A random job title International Creative Liaison,
Product Factors Officer,
Future Interactions Executive
$randomJobType A random job type Supervisor, Manager, Coordinator

Phone, Address and Location

Variable Name Description Examples
$randomPhoneNumber A random 10-digit phone number 700-008-5275, 494-261-3424, 662-302-7817
$randomPhoneNumberExt A random phone number with extension (12 digits) 27-199-983-3864, 99-841-448-2775
$randomCity A random city name Spinkahaven, Korbinburgh, Lefflerport
$randomStreetName A random street name Kuhic Island, General Street, Kendrick Springs
$randomStreetAddress A random street address 5742 Harvey Streets, 47906 Wilmer Orchard
$randomCountry A random country Lao People's Democratic Republic, Kazakhstan, Austria
$randomCountryCode A random 2-letter country code (ISO 3166-1 alpha-2) CV, MD, TD
$randomLatitude A random latitude coordinate 55.2099, 27.3644, -84.7514
$randomLongitude A random longitude coordinate 40.6609, 171.7139, -159.9757


Variable Name Description Examples
$randomImage A random image http://lorempixel.com/640/480/technics
$randomAvatarImage A random avatar image https://s3.amazonaws.com/uifaces/faces/twitter/johnsmithagency/128.jpg
$randomImageUrl A URL for a random image http://lorempixel.com/640/480
$randomAbstractImage A URL for a random abstract image http://lorempixel.com/640/480/abstract
$randomAnimalsImage A URL for a random animal image http://lorempixel.com/640/480/animals
$randomBusinessImage A URL for a random stock business image http://lorempixel.com/640/480/business
$randomCatsImage A URL for a random cat image http://lorempixel.com/640/480/cats
$randomCityImage A URL for a random city image http://lorempixel.com/640/480/city
$randomFoodImage A URL for a random food image http://lorempixel.com/640/480/food
$randomNightlifeImage A URL for a random nightlife image http://lorempixel.com/640/480/nightlife
$randomFashionImage A URL for a random fashion image http://lorempixel.com/640/480/fashion
$randomPeopleImage A URL for a random image of a person http://lorempixel.com/640/480/people
$randomNatureImage A URL for a random nature image http://lorempixel.com/640/480/nature
$randomSportsImage A URL for a random sports image http://lorempixel.com/640/480/sports
$randomTechnicsImage A URL for a random tech image http://lorempixel.com/640/480/technics
$randomTransportImage A URL for a random transportation image http://lorempixel.com/640/480/transport
$randomImageDataUri A random image data URI data:image/svg+xml;charset=UTF-8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20version%3D%221.1%22%20baseProfile%3D%22full%22%20width%3D%22undefined%22%20height%3D%22undefined%22%3E%20%3Crect%20width%3D%22100%25%22%20height%3D%22100%25%22%20fill%3D%22grey%22%2F%3E%20%20%3Ctext%20x%3D%220%22%20y%3D%2220%22%20font-size%3D%2220%22%20text-anchor%3D%22start%22%20fill%3D%22white%22%3Eundefinedxundefined%3C%2Ftext%3E%20%3C%2Fsvg%3E


Variable Name Description Examples
$randomBankAccount A random 8-digit bank account number 09454073, 65653440, 75728757
$randomBankAccountName A random bank account name (e.g. savings account, checking account) Home Loan Account, Checking Account, Auto Loan Account
$randomCreditCardMask A random masked credit card number 3622, 5815, 6257
$randomBankAccountBic A random BIC (Bank Identifier Code) EZIAUGJ1, KXCUTVJ1, DIVIPLL1
$randomBankAccountIban A random 15-31 character IBAN (International Bank Account Number) MU20ZPUN3039684000618086155TKZ
$randomTransactionType A random transaction type (e.g. invoice, payment, deposit) invoice, payment, deposit
$randomCurrencyCode A random 3-letter currency code (ISO-4217) CDF, ZMK, GNF
$randomCurrencyName A random currency name CFP Franc, Cordoba Oro, Pound Sterling
$randomCurrencySymbol A random currency symbol $, £
$randomBitcoin A random bitcoin address 3VB8JGT7Y4Z63U68KGGKDXMLLH5


Variable Name Description Examples
$randomCompanyName A random company name Johns - Kassulke, Grady LLC
$randomCompanySuffix A random company suffix (e.g. Inc, LLC, Group) Inc, LLC, Group
$randomBs A random phrase of business speak killer leverage schemas,
bricks-and-clicks deploy markets,
world-class unleash platforms
$randomBsAdjective A random business speak adjective viral, 24/7, 24/365
$randomBsBuzz A random business speak buzzword repurpose, harness, transition
$randomBsNoun A random business speak noun e-services, markets, interfaces


Variable Name Description Examples
$randomCatchPhrase A random catchphrase Future-proofed heuristic open architecture,
Quality-focused executive toolset,
Grass-roots real-time definition
$randomCatchPhraseAdjective A random catchphrase adjective Self-enabling, Business-focused, Down-sized
$randomCatchPhraseDescriptor A random catchphrase descriptor bandwidth-monitored, needs-based, homogeneous
$randomCatchPhraseNoun Randomly generates a catchphrase noun secured line, superstructure,installation


Variable Name Description Examples
$randomDatabaseColumn A random database column name updatedAt, token, group
$randomDatabaseType A random database type tinyint, text
$randomDatabaseCollation A random database collation cp1250_bin, utf8_general_ci, cp1250_general_ci
$randomDatabaseEngine A random database engine MyISAM, InnoDB, Memory


Variable Name Description Examples
$randomDateFuture A random future datetime Tue Mar 17 2020 13:11:50 GMT+0530 (India Standard Time),
Fri Sep 20 2019 23:51:18 GMT+0530 (India Standard Time),
Thu Nov 07 2019 19:20:06 GMT+0530 (India Standard Time)
$randomDatePast A random past datetime Sat Mar 02 2019 09:09:26 GMT+0530 (India Standard Time),
Sat Feb 02 2019 00:12:17 GMT+0530 (India Standard Time),
Thu Jun 13 2019 03:08:43 GMT+0530 (India Standard Time)
$randomDateRecent A random recent datetime Tue Jul 09 2019 23:12:37 GMT+0530 (India Standard Time),
Wed Jul 10 2019 15:27:11 GMT+0530 (India Standard Time),
Wed Jul 10 2019 01:28:31 GMT+0530 (India Standard Time)
$randomWeekday A random weekday Thursday, Friday, Monday
$randomMonth A random month February, May, January

Domains, Emails and Usernames

Variable Name Description Examples
$randomDomainName A random domain name gracie.biz, armando.biz, trevor.info
$randomDomainSuffix A random domain suffix org, net, com
$randomDomainWord A random unqualified domain name gwen, jaden, donnell
$randomEmail A random email address Pablo62@gmail.com, Ruthe42@hotmail.com, Iva.Kovacek61@hotmail.com
$randomExampleEmail A random email address from an “example” domain Talon28@example.com, Quinten_Kerluke45@example.net, Casey81@example.net
$randomUserName A random username Jarrell.Gutkowski, Lottie.Smitham24, Alia99
$randomUrl A random URL https://anais.net, https://tristin.net, http://jakob.name

Files and Directories

Variable Name Description Examples
$randomFileName A random file name (includes uncommon extensions) neural_sri_lanka_rupee_gloves.gdoc,
$randomFileType A random file type (includes uncommon file types) model, application, video
$randomFileExt A random file extension (includes uncommon extensions) war, book, fsc
$randomCommonFileName A random file name well_modulated.mpg4,
$randomCommonFileType A random, common file type application, audio
$randomCommonFileExt A random, common file extension m2v, wav, png
$randomFilePath A random file path /home/programming_chicken.cpio,
$randomDirectoryPath A random directory path /usr/bin, /root, /usr/local/bin
$randomMimeType A random MIME type audio/vnd.vmx.cvsd,


Variable Name Description Examples
$randomPrice A random price between 100.00 and 999.00 531.55, 488.76, 511.56
$randomProduct A random product Towels, Pizza, Pants
$randomProductAdjective A random product adjective Unbranded, Incredible, Tasty
$randomProductMaterial A random product material Steel, Plastic, Frozen
$randomProductName A random product name Handmade Concrete Tuna, Refined Rubber Hat
$randomDepartment A random commerce category Tools, Movies, Electronics


Variable Name Description Examples
$randomNoun A random noun matrix, bus, bandwidth
$randomVerb A random verb parse, quantify, navigate
$randomIngverb A random verb ending in "-ing" synthesizing, navigating, backing up
$randomAdjective A random adjective auxiliary, multi-byte, back-end
$randomWord A random word withdrawal, infrastructures, IB
$randomWords Some random words Samoa Synergistic sticky copying Grocery,
Corporate Springs,
Christmas Island Ghana Quality
$randomPhrase A random phrase You can't program the monitor without navigating the mobile XML program!,
overriding the capacitor won't do anything, we need to compress the optical SMS transmitter!,
I'll generate the virtual AI program, that should microchip the RAM monitor!

Lorem Ipsum

Variable Name Description Examples
$randomLoremWord A random word of lorem ipsum text est
$randomLoremWords Some random words of lorem ipsum text vel repellat nobis
$randomLoremSentence A random sentence of lorem ipsum text Molestias consequuntur nisi non quod.
$randomLoremSentences A random 2-6 sentences of lorem ipsum text Et sint voluptas similique iure amet perspiciatis vero sequi atque. Ut porro sit et hic. Neque aspernatur vitae fugiat ut dolore et veritatis. Ab iusto ex delectus animi. Voluptates nisi iusto. Impedit quod quae voluptate qui.
$randomLoremParagraph A random paragraph of lorem ipsum text Ab aliquid odio iste quo voluptas voluptatem dignissimos velit. Recusandae facilis qui commodi ea magnam enim nostrum quia quis. Nihil est suscipit assumenda ut voluptatem sed. Esse ab voluptas odit qui molestiae. Rem est nesciunt est quis ipsam expedita consequuntur.
$randomLoremParagraphs 3 random paragraphs of lorem ipsum text Voluptatem rem magnam aliquam ab id aut quaerat. Placeat provident possimus voluptatibus dicta velit non aut quasi. Mollitia et aliquam expedita sunt dolores nam consequuntur. Nam dolorum delectus ipsam repudiandae et ipsam ut voluptatum totam. Nobis labore labore recusandae ipsam quo.
Voluptatem occaecati omnis debitis eum libero. Veniam et cum unde. Nisi facere repudiandae error aperiam expedita optio quae consequatur qui. Vel ut sit aliquid omnis. Est placeat ducimus. Libero voluptatem eius occaecati ad sint voluptatibus laborum provident iure.
Autem est sequi ut tenetur omnis enim. Fuga nisi dolor expedita. Ea dolore ut et a nostrum quae ut reprehenderit iste. Numquam optio magnam omnis architecto non. Est cumque laboriosam quibusdam eos voluptatibus velit omnis. Voluptatem officiis nulla omnis ratione excepturi.
$randomLoremText A random amount of lorem ipsum text Quisquam asperiores exercitationem ut ipsum. Aut eius nesciunt. Et reiciendis aut alias eaque. Nihil amet laboriosam pariatur eligendi. Sunt ullam ut sint natus ducimus. Voluptas harum aspernatur soluta rem nam.
$randomLoremSlug A random lorem ipsum URL slug eos-aperiam-accusamus, beatae-id-molestiae, qui-est-repellat
$randomLoremLines 1-5 random lines of lorem ipsum Ducimus in ut mollitia.\nA itaque non.\nHarum temporibus nihil voluptas.\nIste in sed et nesciunt in quaerat sed.