{{$randomData}}, and you can use them in the request body, authentication, parameters, and other fields.
Dynamic variables are case-sensitive and follow the camelCase convention. This feature is available in Bruno version 2.x and above.
Using Dynamic Variables in Scripts
To use dynamic variables in pre-request or post-response scripts, use thebru.interpolate() function. For example:
// Generate a random first name
const firstName = bru.interpolate('{{$randomFirstName}}');
console.log('Random first name:', firstName);
// Generate a random email
const email = bru.interpolate('{{$randomEmail}}');
console.log('Random email:', email);
// Generate multiple dynamic values in one call
const userInfo = bru.interpolate(`
Name: {{$randomFullName}}
Job: {{$randomJobTitle}}
Email: {{$randomEmail}}
`);
console.log(userInfo);
// Use with environment variables
const greeting = bru.interpolate('Hello {{user}} from {{$randomCity}}');
bru.interpolate() function allows you to embed dynamic variables in strings and have them evaluated at runtime within scripts, just like they would be in request bodies or headers.
Usage Examples
Here are some common use cases for dynamic variables:-
Test Data Generation:
{ "user": { "id": "{{$randomUUID}}", "name": "{{$randomFullName}}", "email": "{{$randomEmail}}", "phone": "{{$randomPhoneNumber}}", "address": { "street": "{{$randomStreetAddress}}", "city": "{{$randomCity}}", "country": "{{$randomCountry}}" } } } -
Authentication:
{ "credentials": { "username": "{{$randomUserName}}", "password": "{{$randomPassword}}", "lastLogin": "{{$isoTimestamp}}" } } -
Business Data:
{ "company": { "name": "{{$randomCompanyName}}", "catchPhrase": "{{$randomCatchPhrase}}", "department": "{{$randomDepartment}}", "account": { "number": "{{$randomBankAccount}}", "type": "{{$randomTransactionType}}" } } }
Available Dynamic Variables
Bruno provides a comprehensive set of dynamic variables for generating test data. These variables are organized into categories based on their functionality.Basic Data Types
| Variable Name | Description | Examples |
|---|---|---|
{{$guid}} | A random UUID | 550e8400-e29b-41d4-a716-446655440000 |
{{$timestamp}} | Current timestamp in seconds | 1562757107 |
{{$isoTimestamp}} | Current timestamp in ISO format | 2024-03-20T12:34:56.789Z |
{{$randomUUID}} | A random UUID | 550e8400-e29b-41d4-a716-446655440000 |
{{$randomNanoId}} | A random Nano ID | V1StGXR8_Z5jdHi6B5cEn4c8b8w |
{{$randomAlphaNumeric}} | A random alpha-numeric character | 6, y, z |
{{$randomBoolean}} | A random boolean value | true, false |
{{$randomInt}} | A random integer between 0 and 1000 | 802, 494, 200 |
{{$randomColor}} | A random color | red, fuchsia, grey |
{{$randomHexColor}} | A random hex value | #47594a, #431e48, #106f21 |
{{$randomAbbreviation}} | A random abbreviation | SQL, PCI, JSON |
{{$randomWord}} | A random word | protocol, interface |
{{$randomWords}} | Multiple random words | quick brown fox |
Internet and Network
| Variable Name | Description | Examples |
|---|---|---|
{{$randomIP}} | A random IPv4 address | 241.102.234.100, 216.7.27.38 |
{{$randomIPV4}} | A random IPv4 address | 192.168.1.1 |
{{$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 |
{{$randomProtocol}} | A random internet protocol | http, https |
{{$randomSemver}} | A random semantic version number | 7.0.5, 2.5.8, 6.4.9 |
{{$randomDomainName}} | A random domain name | example.com |
{{$randomDomainSuffix}} | A random domain suffix | .com, .org, .net |
{{$randomDomainWord}} | A random domain word | example, test, demo |
{{$randomExampleEmail}} | A random example email | user@example.com |
{{$randomEmail}} | A random email address | john.doe@example.com |
{{$randomUserName}} | A random username | johndoe123 |
{{$randomUrl}} | A random URL | https://example.com |
Names and Personal Information
| Variable Name | Description | Examples |
|---|---|---|
{{$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, DD |
{{$randomJobArea}} | A random job area | Marketing, Engineering, Sales |
{{$randomJobDescriptor}} | A random job descriptor | Senior, Lead, Junior |
{{$randomJobTitle}} | A random job title | Software Engineer, Product Manager |
{{$randomJobType}} | A random job type | Full-time, Contract, Part-time |
{{$randomPhoneNumber}} | A random phone number | +1-555-123-4567 |
{{$randomPhoneNumberExt}} | A random phone number with extension | +1-555-123-4567 ext. 123 |
Location
| Variable Name | Description | Examples |
|---|---|---|
{{$randomCity}} | A random city name | New York, London, Tokyo |
{{$randomStreetName}} | A random street name | Main Street, Park Avenue |
{{$randomStreetAddress}} | A random street address | 123 Main St, 456 Park Ave |
{{$randomCountry}} | A random country name | United States, Japan, Germany |
{{$randomCountryCode}} | A random country code | US, JP, DE |
{{$randomLatitude}} | A random latitude | 40.7128, 35.6762 |
{{$randomLongitude}} | A random longitude | -74.0060, 139.6503 |
Images
| Variable Name | Description | Examples |
|---|---|---|
{{$randomAvatarImage}} | A random avatar image URL | https://i.pravatar.cc/300 |
{{$randomImageUrl}} | A random image URL | https://picsum.photos/200/300 |
{{$randomAbstractImage}} | A random abstract image | https://loremflickr.com/320/240/abstract |
{{$randomAnimalsImage}} | A random animal image | https://loremflickr.com/320/240/animals |
{{$randomBusinessImage}} | A random business image | https://loremflickr.com/320/240/business |
{{$randomCatsImage}} | A random cat image | https://loremflickr.com/320/240/cats |
{{$randomCityImage}} | A random city image | https://loremflickr.com/320/240/city |
{{$randomFoodImage}} | A random food image | https://loremflickr.com/320/240/food |
{{$randomNightlifeImage}} | A random nightlife image | https://loremflickr.com/320/240/nightlife |
{{$randomFashionImage}} | A random fashion image | https://loremflickr.com/320/240/fashion |
{{$randomPeopleImage}} | A random people image | https://loremflickr.com/320/240/people |
{{$randomNatureImage}} | A random nature image | https://loremflickr.com/320/240/nature |
{{$randomSportsImage}} | A random sports image | https://loremflickr.com/320/240/sports |
{{$randomTransportImage}} | A random transport image | https://loremflickr.com/320/240/transport |
{{$randomImageDataUri}} | A random image data URI | data:image/png;base64,… |
Finance
| Variable Name | Description | Examples |
|---|---|---|
{{$randomBankAccount}} | A random bank account number | 1234567890 |
{{$randomBankAccountName}} | A random bank account name | Checking Account |
{{$randomCreditCardMask}} | A masked credit card number | **** **** **** 1234 |
{{$randomBankAccountBic}} | A random BIC code | DEUTDEFF |
{{$randomBankAccountIban}} | A random IBAN | DE89370400440532013000 |
{{$randomTransactionType}} | A random transaction type | deposit, withdrawal |
{{$randomCurrencyCode}} | A random currency code | USD, EUR, JPY |
{{$randomCurrencyName}} | A random currency name | US Dollar, Euro, Yen |
{{$randomCurrencySymbol}} | A random currency symbol | $, €, ¥ |
{{$randomBitcoin}} | A random Bitcoin address | 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa |
Business
| Variable Name | Description | Examples |
|---|---|---|
{{$randomCompanyName}} | A random company name | TechCorp Inc. |
{{$randomCompanySuffix}} | A random company suffix | LLC, Inc., Ltd. |
{{$randomBs}} | A random business buzz phrase | revolutionize end-to-end systems |
{{$randomBsAdjective}} | A random business adjective | innovative, scalable |
{{$randomBsBuzz}} | A random business buzz word | synergize, leverage |
{{$randomBsNoun}} | A random business noun | solutions, platform |
{{$randomCatchPhrase}} | A random company catch phrase | Innovate. Create. Transform. |
{{$randomCatchPhraseAdjective}} | A random catch phrase adjective | innovative, revolutionary |
{{$randomCatchPhraseDescriptor}} | A random catch phrase descriptor | next-generation, cutting-edge |
{{$randomCatchPhraseNoun}} | A random catch phrase noun | solutions, platform |
Database
| Variable Name | Description | Examples |
|---|---|---|
{{$randomDatabaseColumn}} | A random database column name | id, name, created_at |
{{$randomDatabaseType}} | A random database type | varchar, int, timestamp |
{{$randomDatabaseCollation}} | A random database collation | utf8_general_ci, latin1_swedish_ci |
{{$randomDatabaseEngine}} | A random database engine | InnoDB, MyISAM |
Dates
| Variable Name | Description | Examples |
|---|---|---|
{{$randomDateFuture}} | A random future date | 2024-12-31T23:59:59.999Z |
{{$randomDatePast}} | A random past date | 2020-01-01T00:00:00.000Z |
{{$randomDateRecent}} | A random recent date | 2024-03-15T12:34:56.789Z |
{{$randomWeekday}} | A random weekday | Monday, Tuesday |
{{$randomMonth}} | A random month | January, February |
Files and System
| Variable Name | Description | Examples |
|---|---|---|
{{$randomFileName}} | A random file name | document.pdf |
{{$randomFileType}} | A random file type | application/pdf |
{{$randomFileExt}} | A random file extension | .pdf, .jpg |
{{$randomCommonFileName}} | A random common file name | document.pdf |
{{$randomCommonFileType}} | A random common file type | application/pdf |
{{$randomCommonFileExt}} | A random common file extension | .pdf, .jpg |
{{$randomFilePath}} | A random file path | /path/to/file.txt |
{{$randomDirectoryPath}} | A random directory path | /usr/local/bin |
{{$randomMimeType}} | A random MIME type | application/json |
Commerce
| Variable Name | Description | Examples |
|---|---|---|
{{$randomPrice}} | A random price | 99.99, 149.95 |
{{$randomProduct}} | A random product | Chair, Table |
{{$randomProductAdjective}} | A random product adjective | Ergonomic, Modern |
{{$randomProductMaterial}} | A random product material | Wood, Metal |
{{$randomProductName}} | A random product name | Ergonomic Wooden Chair |
{{$randomDepartment}} | A random department name | Electronics, Clothing |
Hacker and Lorem
| Variable Name | Description | Examples |
|---|---|---|
{{$randomNoun}} | A random noun | protocol, interface |
{{$randomVerb}} | A random verb | hack, override |
{{$randomIngverb}} | A random -ing verb | hacking, overriding |
{{$randomAdjective}} | A random adjective | digital, virtual |
{{$randomPhrase}} | A random phrase | Try to reboot the SQL bus |
{{$randomLoremWord}} | A random Lorem Ipsum word | lorem, ipsum |
{{$randomLoremWords}} | Multiple Lorem Ipsum words | lorem ipsum dolor |
{{$randomLoremSentence}} | A random Lorem Ipsum sentence | Lorem ipsum dolor sit amet. |
{{$randomLoremSentences}} | Multiple Lorem Ipsum sentences | Lorem ipsum dolor sit amet. Consectetur adipiscing elit. |
{{$randomLoremParagraph}} | A random Lorem Ipsum paragraph | Lorem ipsum dolor sit amet… |
{{$randomLoremParagraphs}} | Multiple Lorem Ipsum paragraphs | Lorem ipsum dolor sit amet…\n\nConsectetur adipiscing elit… |
{{$randomLoremText}} | A random Lorem Ipsum text | Lorem ipsum dolor sit amet… |
{{$randomLoremSlug}} | A random Lorem Ipsum slug | lorem-ipsum-dolor |
{{$randomLoremLines}} | Multiple Lorem Ipsum lines | Lorem ipsum dolor\nConsectetur adipiscing elit |