diff --git a/packages/bruno-app/src/components/RequestTabPanel/index.js b/packages/bruno-app/src/components/RequestTabPanel/index.js
index e1f4b6fda..5a9654bb5 100644
--- a/packages/bruno-app/src/components/RequestTabPanel/index.js
+++ b/packages/bruno-app/src/components/RequestTabPanel/index.js
@@ -22,6 +22,8 @@ import SecuritySettings from 'components/SecuritySettings';
 import FolderSettings from 'components/FolderSettings';
 import { getGlobalEnvironmentVariables } from 'utils/collections/index';
 import { produce } from 'immer';
+import get from 'lodash/get';
+import { replacePlaceholders } from 'utils/common/variable-replacer'; 
 
 const MIN_LEFT_PANE_WIDTH = 300;
 const MIN_RIGHT_PANE_WIDTH = 350;
@@ -163,7 +165,47 @@ const RequestTabPanel = () => {
   }
 
   const handleRun = async () => {
-    dispatch(sendRequest(item, collection.uid)).catch((err) =>
+    let newItem = JSON.parse(JSON.stringify(item));
+
+    // Use lodash get to extract body mode
+    const bodyMode = newItem.draft
+      ? get(newItem, 'draft.request.body.mode')
+      : get(newItem, 'request.body.mode');
+
+    let bodyContent;
+    if (bodyMode === 'json') {
+      bodyContent = newItem.draft ? newItem.draft.request.body.json : newItem.request.body.json;
+    } else if (bodyMode === 'text') {
+      bodyContent = newItem.draft ? newItem.draft.request.body.text : newItem.request.body.text;
+    } else if (bodyMode === 'xml') {
+      bodyContent = newItem.draft ? newItem.draft.request.body.xml : newItem.request.body.xml;
+    } else if (bodyMode === 'sparql') {
+      bodyContent = newItem.draft ? newItem.draft.request.body.sparql : newItem.request.body.sparql;
+    } else {
+      dispatch(sendRequest(item, collection.uid)).catch(err => { /* handle error */ });
+      return;
+    }
+
+    // Perform placeholder replacements
+    bodyContent = replacePlaceholders(bodyContent);
+
+    // Assign updated content back to the item
+    if (bodyMode === 'json') {
+      if (newItem.draft) newItem.draft.request.body.json = bodyContent;
+      else newItem.request.body.json = bodyContent;
+    } else if (bodyMode === 'text') {
+      if (newItem.draft) newItem.draft.request.body.text = bodyContent;
+      else newItem.request.body.text = bodyContent;
+    } else if (bodyMode === 'xml') {
+      if (newItem.draft) newItem.draft.request.body.xml = bodyContent;
+      else newItem.request.body.xml = bodyContent;
+    } else if (bodyMode === 'sparql') {
+      if (newItem.draft) newItem.draft.request.body.sparql = bodyContent;
+      else newItem.request.body.sparql = bodyContent;
+    }
+
+    // Send the modified request
+    dispatch(sendRequest(newItem, collection.uid)).catch((err) =>
       toast.custom((t) => <NetworkError onClose={() => toast.dismiss(t.id)} />, {
         duration: 5000
       })
diff --git a/packages/bruno-app/src/utils/common/variable-replacer.js b/packages/bruno-app/src/utils/common/variable-replacer.js
new file mode 100644
index 000000000..16108ea5e
--- /dev/null
+++ b/packages/bruno-app/src/utils/common/variable-replacer.js
@@ -0,0 +1,651 @@
+import { v4 as uuidv4 } from 'uuid';
+import { faker } from '@faker-js/faker';
+
+export function generateGuid() {
+  return uuidv4();
+}
+
+export function generateTimestamp() {
+  // Current UNIX timestamp in seconds
+  return Math.floor(Date.now() / 1000).toString();
+}
+
+export function generateIsoTimestamp() {
+  return new Date().toISOString();
+}
+
+export function generateRandomUUID() {
+  return uuidv4();
+}
+
+export function generateRandomAlphaNumeric() {
+  // Random alphanumeric character: 0-9, a-z
+  const chars = '0123456789abcdefghijklmnopqrstuvwxyz';
+  return chars.charAt(Math.floor(Math.random() * chars.length));
+}
+
+export function generateRandomBoolean() {
+  return Math.random() < 0.5 ? 'true' : 'false';
+}
+
+export function generateRandomInt() {
+  return Math.floor(Math.random() * 1001).toString(); // between 0 and 1000
+}
+
+const colors = ['red', 'fuchsia', 'grey', 'blue', 'green', 'yellow', 'cyan', 'magenta'];
+export function generateRandomColor() {
+  return colors[Math.floor(Math.random() * colors.length)];
+}
+
+export function generateRandomHexColor() {
+  // Random hex color like #a1b2c3
+  const r = Math.floor(Math.random() * 256).toString(16).padStart(2, '0');
+  const g = Math.floor(Math.random() * 256).toString(16).padStart(2, '0');
+  const b = Math.floor(Math.random() * 256).toString(16).padStart(2, '0');
+  return `#${r}${g}${b}`;
+}
+
+const abbreviations = ['SQL', 'PCI', 'JSON', 'HTTP', 'HTML', 'CSS', 'API', 'TCP'];
+export function generateRandomAbbreviation() {
+  return abbreviations[Math.floor(Math.random() * abbreviations.length)];
+}
+
+// Internet and IP addresses (using faker)
+export function generateRandomIP() {
+  return faker.internet.ip();
+}
+
+export function generateRandomIPV6() {
+  return faker.internet.ipv6();
+}
+
+export function generateRandomMACAddress() {
+  return faker.internet.mac();
+}
+
+export function generateRandomPassword() {
+  return faker.internet.password(15);
+}
+
+export function generateRandomLocale() {
+  // Faker supports locales but doesn't directly give a random two-letter code,
+  // We'll pick from a subset of ISO 639-1 language codes
+  const locales = ['en', 'fr', 'de', 'es', 'it', 'nl', 'ru', 'ja', 'zh', 'ar', 'sr', 'si', 'ny'];
+  return locales[Math.floor(Math.random() * locales.length)];
+}
+
+export function generateRandomUserAgent() {
+  return faker.internet.userAgent();
+}
+
+const protocols = ['http', 'https'];
+export function generateRandomProtocol() {
+  return protocols[Math.floor(Math.random() * protocols.length)];
+}
+
+export function generateRandomSemver() {
+  return `${faker.datatype.number({min: 0, max:10})}.${faker.datatype.number({min: 0, max:10})}.${faker.datatype.number({min: 0, max:10})}`;
+}
+
+// Names (faker provides many functions)
+export function generateRandomFirstName() {
+  return faker.name.firstName();
+}
+
+export function generateRandomLastName() {
+  return faker.name.lastName();
+}
+
+export function generateRandomFullName() {
+  return faker.name.findName();
+}
+
+export function generateRandomNamePrefix() {
+  return faker.name.prefix();
+}
+
+export function generateRandomNameSuffix() {
+  return faker.name.suffix();
+}
+
+// Profession
+export function generateRandomJobArea() {
+  return faker.name.jobArea();
+}
+
+export function generateRandomJobDescriptor() {
+  return faker.name.jobDescriptor();
+}
+
+export function generateRandomJobTitle() {
+  return faker.name.jobTitle();
+}
+
+export function generateRandomJobType() {
+  return faker.name.jobType();
+}
+
+// Phone, address, and location
+export function generateRandomPhoneNumber() {
+  // faker.phone.phoneNumber() returns a random phone format
+  return faker.phone.number('###-###-####');
+}
+
+export function generateRandomPhoneNumberExt() {
+  // Extended format with 4 groups of 3 digits (12 digits total)
+  return faker.phone.number('##-###-###-####');
+}
+
+export function generateRandomCity() {
+  return faker.address.city();
+}
+
+export function generateRandomStreetName() {
+  return faker.address.street();
+}
+
+export function generateRandomStreetAddress() {
+  return faker.address.streetAddress();
+}
+
+export function generateRandomCountry() {
+  return faker.address.country();
+}
+
+export function generateRandomCountryCode() {
+  return faker.address.countryCode('alpha-2');
+}
+
+export function generateRandomLatitude() {
+  return faker.address.latitude().toString();
+}
+
+export function generateRandomLongitude() {
+  return faker.address.longitude().toString();
+}
+
+// Images (Using lorempixel placeholder images)
+function randomImage(width = 640, height = 480, category = '') {
+  const baseUrl = 'http://lorempixel.com';
+  return category
+    ? `${baseUrl}/${width}/${height}/${category}`
+    : `${baseUrl}/${width}/${height}`;
+}
+export function generateRandomAvatarImage() {
+  return faker.image.avatar();
+}
+export function generateRandomImageUrl() {
+  return randomImage();
+}
+export function generateRandomAbstractImage() {
+  return randomImage(640, 480, 'abstract');
+}
+export function generateRandomAnimalsImage() {
+  return randomImage(640, 480, 'animals');
+}
+export function generateRandomBusinessImage() {
+  return randomImage(640, 480, 'business');
+}
+export function generateRandomCatsImage() {
+  return randomImage(640, 480, 'cats');
+}
+export function generateRandomCityImage() {
+  return randomImage(640, 480, 'city');
+}
+export function generateRandomFoodImage() {
+  return randomImage(640, 480, 'food');
+}
+export function generateRandomNightlifeImage() {
+  return randomImage(640, 480, 'nightlife');
+}
+export function generateRandomFashionImage() {
+  return randomImage(640, 480, 'fashion');
+}
+export function generateRandomPeopleImage() {
+  return randomImage(640, 480, 'people');
+}
+export function generateRandomNatureImage() {
+  return randomImage(640, 480, 'nature');
+}
+export function generateRandomSportsImage() {
+  return randomImage(640, 480, 'sports');
+}
+export function generateRandomTransportImage() {
+  return randomImage(640, 480, 'transport');
+}
+export function generateRandomImageDataUri() {
+  return faker.image.dataUri(640, 480);
+}
+
+// Finance
+export function generateRandomBankAccount() {
+  return faker.finance.account();
+}
+
+export function generateRandomBankAccountName() {
+  return faker.finance.accountName();
+}
+
+export function generateRandomCreditCardMask() {
+  return faker.finance.mask();
+}
+
+export function generateRandomBankAccountBic() {
+  return faker.finance.bic();
+}
+
+export function generateRandomBankAccountIban() {
+  return faker.finance.iban();
+}
+
+export function generateRandomTransactionType() {
+  return faker.finance.transactionType();
+}
+
+export function generateRandomCurrencyCode() {
+  return faker.finance.currencyCode();
+}
+
+export function generateRandomCurrencyName() {
+  return faker.finance.currencyName();
+}
+
+export function generateRandomCurrencySymbol() {
+  return faker.finance.currencySymbol();
+}
+
+export function generateRandomBitcoin() {
+  return faker.finance.bitcoinAddress();
+}
+
+// Business
+export function generateRandomCompanyName() {
+  return faker.company.name();
+}
+
+export function generateRandomCompanySuffix() {
+  // Just pick a suffix
+  const suffixes = ['Inc', 'LLC', 'Group', 'Corp', 'Ltd'];
+  return suffixes[Math.floor(Math.random() * suffixes.length)];
+}
+
+export function generateRandomBs() {
+  return faker.company.bs();
+}
+
+export function generateRandomBsAdjective() {
+  return faker.company.bsAdjective();
+}
+
+export function generateRandomBsBuzz() {
+  return faker.company.bsBuzz();
+}
+
+export function generateRandomBsNoun() {
+  return faker.company.bsNoun();
+}
+
+// Catchphrases
+export function generateRandomCatchPhrase() {
+  return faker.company.catchPhrase();
+}
+
+export function generateRandomCatchPhraseAdjective() {
+  return faker.company.catchPhraseAdjective();
+}
+
+export function generateRandomCatchPhraseDescriptor() {
+  return faker.company.catchPhraseDescriptor();
+}
+
+export function generateRandomCatchPhraseNoun() {
+  return faker.company.catchPhraseNoun();
+}
+
+// Databases
+export function generateRandomDatabaseColumn() {
+  return faker.database.column();
+}
+
+export function generateRandomDatabaseType() {
+  return faker.database.type();
+}
+
+export function generateRandomDatabaseCollation() {
+  return faker.database.collation();
+}
+
+export function generateRandomDatabaseEngine() {
+  return faker.database.engine();
+}
+
+// Dates
+export function generateRandomDateFuture() {
+  return faker.date.future().toString();
+}
+
+export function generateRandomDatePast() {
+  return faker.date.past().toString();
+}
+
+export function generateRandomDateRecent() {
+  return faker.date.recent().toString();
+}
+
+export function generateRandomWeekday() {
+  const days = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];
+  return days[Math.floor(Math.random() * days.length)];
+}
+
+export function generateRandomMonth() {
+  const months = [
+    'January', 'February', 'March', 'April', 'May', 'June', 
+    'July', 'August', 'September', 'October', 'November', 'December'
+  ];
+  return months[Math.floor(Math.random() * months.length)];
+}
+
+// Domains, emails, and usernames
+export function generateRandomDomainName() {
+  return faker.internet.domainName();
+}
+
+export function generateRandomDomainSuffix() {
+  return faker.internet.domainSuffix();
+}
+
+export function generateRandomDomainWord() {
+  return faker.internet.domainWord();
+}
+
+export function generateRandomEmail() {
+  return faker.internet.email();
+}
+
+export function generateRandomExampleEmail() {
+  const domain = ['example.com', 'example.net', 'example.org'];
+  return `${faker.internet.userName()}@${domain[Math.floor(Math.random() * domain.length)]}`;
+}
+
+export function generateRandomUserName() {
+  return faker.internet.userName();
+}
+
+export function generateRandomUrl() {
+  return faker.internet.url();
+}
+
+// Files and directories
+export function generateRandomFileName() {
+  return faker.system.fileName();
+}
+
+export function generateRandomFileType() {
+  return faker.system.fileType();
+}
+
+export function generateRandomFileExt() {
+  return faker.system.fileExt();
+}
+
+export function generateRandomCommonFileName() {
+  return faker.system.commonFileName();
+}
+
+export function generateRandomCommonFileType() {
+  return faker.system.commonFileType();
+}
+
+export function generateRandomCommonFileExt() {
+  return faker.system.commonFileExt();
+}
+
+export function generateRandomFilePath() {
+  return faker.system.filePath();
+}
+
+export function generateRandomDirectoryPath() {
+  return faker.system.directoryPath();
+}
+
+export function generateRandomMimeType() {
+  return faker.system.mimeType();
+}
+
+// Stores
+export function generateRandomPrice() {
+  return faker.commerce.price();
+}
+
+export function generateRandomProduct() {
+  return faker.commerce.product();
+}
+
+export function generateRandomProductAdjective() {
+  return faker.commerce.productAdjective();
+}
+
+export function generateRandomProductMaterial() {
+  return faker.commerce.productMaterial();
+}
+
+export function generateRandomProductName() {
+  return faker.commerce.productName();
+}
+
+export function generateRandomDepartment() {
+  return faker.commerce.department();
+}
+
+// Grammar
+export function generateRandomNoun() {
+  // Using faker.word.noun() from faker v8+.
+  return faker.word.noun();
+}
+
+export function generateRandomVerb() {
+  return faker.word.verb();
+}
+
+export function generateRandomIngverb() {
+  // This is custom, pick a random verb and add 'ing'
+  const verb = faker.word.verb();
+  return verb.endsWith('e') ? verb.slice(0, -1) + 'ing' : verb + 'ing';
+}
+
+export function generateRandomAdjective() {
+  return faker.word.adjective();
+}
+
+export function generateRandomWord() {
+  return faker.word.sample();
+}
+
+export function generateRandomWords() {
+  return faker.lorem.words();
+}
+
+export function generateRandomPhrase() {
+  // faker doesn't have direct "phrase", but we can use sentence
+  return faker.lorem.sentence();
+}
+
+// Lorem ipsum
+export function generateRandomLoremWord() {
+  return faker.lorem.word();
+}
+
+export function generateRandomLoremWords() {
+  return faker.lorem.words();
+}
+
+export function generateRandomLoremSentence() {
+  return faker.lorem.sentence();
+}
+
+export function generateRandomLoremSentences() {
+  return faker.lorem.sentences();
+}
+
+export function generateRandomLoremParagraph() {
+  return faker.lorem.paragraph();
+}
+
+export function generateRandomLoremParagraphs() {
+  return faker.lorem.paragraphs();
+}
+
+export function generateRandomLoremText() {
+  return faker.lorem.text();
+}
+
+export function generateRandomLoremSlug() {
+  return faker.lorem.slug();
+}
+
+export function generateRandomLoremLines() {
+  return faker.lorem.lines();
+}
+
+
+// Map placeholders to functions:
+export const placeholderFunctions = {
+  '$guid': generateGuid,
+  '$timestamp': generateTimestamp,
+  '$isoTimestamp': generateIsoTimestamp,
+  '$randomUUID': generateRandomUUID,
+  '$randomAlphaNumeric': generateRandomAlphaNumeric,
+  '$randomBoolean': generateRandomBoolean,
+  '$randomInt': generateRandomInt,
+  '$randomColor': generateRandomColor,
+  '$randomHexColor': generateRandomHexColor,
+  '$randomAbbreviation': generateRandomAbbreviation,
+  '$randomIP': generateRandomIP,
+  '$randomIPV6': generateRandomIPV6,
+  '$randomMACAddress': generateRandomMACAddress,
+  '$randomPassword': generateRandomPassword,
+  '$randomLocale': generateRandomLocale,
+  '$randomUserAgent': generateRandomUserAgent,
+  '$randomProtocol': generateRandomProtocol,
+  '$randomSemver': generateRandomSemver,
+  '$randomFirstName': generateRandomFirstName,
+  '$randomLastName': generateRandomLastName,
+  '$randomFullName': generateRandomFullName,
+  '$randomNamePrefix': generateRandomNamePrefix,
+  '$randomNameSuffix': generateRandomNameSuffix,
+  '$randomJobArea': generateRandomJobArea,
+  '$randomJobDescriptor': generateRandomJobDescriptor,
+  '$randomJobTitle': generateRandomJobTitle,
+  '$randomJobType': generateRandomJobType,
+  '$randomPhoneNumber': generateRandomPhoneNumber,
+  '$randomPhoneNumberExt': generateRandomPhoneNumberExt,
+  '$randomCity': generateRandomCity,
+  '$randomStreetName': generateRandomStreetName,
+  '$randomStreetAddress': generateRandomStreetAddress,
+  '$randomCountry': generateRandomCountry,
+  '$randomCountryCode': generateRandomCountryCode,
+  '$randomLatitude': generateRandomLatitude,
+  '$randomLongitude': generateRandomLongitude,
+  '$randomAvatarImage': generateRandomAvatarImage,
+  '$randomImageUrl': generateRandomImageUrl,
+  '$randomAbstractImage': generateRandomAbstractImage,
+  '$randomAnimalsImage': generateRandomAnimalsImage,
+  '$randomBusinessImage': generateRandomBusinessImage,
+  '$randomCatsImage': generateRandomCatsImage,
+  '$randomCityImage': generateRandomCityImage,
+  '$randomFoodImage': generateRandomFoodImage,
+  '$randomNightlifeImage': generateRandomNightlifeImage,
+  '$randomFashionImage': generateRandomFashionImage,
+  '$randomPeopleImage': generateRandomPeopleImage,
+  '$randomNatureImage': generateRandomNatureImage,
+  '$randomSportsImage': generateRandomSportsImage,
+  '$randomTransportImage': generateRandomTransportImage,
+  '$randomImageDataUri': generateRandomImageDataUri,
+  '$randomBankAccount': generateRandomBankAccount,
+  '$randomBankAccountName': generateRandomBankAccountName,
+  '$randomCreditCardMask': generateRandomCreditCardMask,
+  '$randomBankAccountBic': generateRandomBankAccountBic,
+  '$randomBankAccountIban': generateRandomBankAccountIban,
+  '$randomTransactionType': generateRandomTransactionType,
+  '$randomCurrencyCode': generateRandomCurrencyCode,
+  '$randomCurrencyName': generateRandomCurrencyName,
+  '$randomCurrencySymbol': generateRandomCurrencySymbol,
+  '$randomBitcoin': generateRandomBitcoin,
+  '$randomCompanyName': generateRandomCompanyName,
+  '$randomCompanySuffix': generateRandomCompanySuffix,
+  '$randomBs': generateRandomBs,
+  '$randomBsAdjective': generateRandomBsAdjective,
+  '$randomBsBuzz': generateRandomBsBuzz,
+  '$randomBsNoun': generateRandomBsNoun,
+  '$randomCatchPhrase': generateRandomCatchPhrase,
+  '$randomCatchPhraseAdjective': generateRandomCatchPhraseAdjective,
+  '$randomCatchPhraseDescriptor': generateRandomCatchPhraseDescriptor,
+  '$randomCatchPhraseNoun': generateRandomCatchPhraseNoun,
+  '$randomDatabaseColumn': generateRandomDatabaseColumn,
+  '$randomDatabaseType': generateRandomDatabaseType,
+  '$randomDatabaseCollation': generateRandomDatabaseCollation,
+  '$randomDatabaseEngine': generateRandomDatabaseEngine,
+  '$randomDateFuture': generateRandomDateFuture,
+  '$randomDatePast': generateRandomDatePast,
+  '$randomDateRecent': generateRandomDateRecent,
+  '$randomWeekday': generateRandomWeekday,
+  '$randomMonth': generateRandomMonth,
+  '$randomDomainName': generateRandomDomainName,
+  '$randomDomainSuffix': generateRandomDomainSuffix,
+  '$randomDomainWord': generateRandomDomainWord,
+  '$randomEmail': generateRandomEmail,
+  '$randomExampleEmail': generateRandomExampleEmail,
+  '$randomUserName': generateRandomUserName,
+  '$randomUrl': generateRandomUrl,
+  '$randomFileName': generateRandomFileName,
+  '$randomFileType': generateRandomFileType,
+  '$randomFileExt': generateRandomFileExt,
+  '$randomCommonFileName': generateRandomCommonFileName,
+  '$randomCommonFileType': generateRandomCommonFileType,
+  '$randomCommonFileExt': generateRandomCommonFileExt,
+  '$randomFilePath': generateRandomFilePath,
+  '$randomDirectoryPath': generateRandomDirectoryPath,
+  '$randomMimeType': generateRandomMimeType,
+  '$randomPrice': generateRandomPrice,
+  '$randomProduct': generateRandomProduct,
+  '$randomProductAdjective': generateRandomProductAdjective,
+  '$randomProductMaterial': generateRandomProductMaterial,
+  '$randomProductName': generateRandomProductName,
+  '$randomDepartment': generateRandomDepartment,
+  '$randomNoun': generateRandomNoun,
+  '$randomVerb': generateRandomVerb,
+  '$randomIngverb': generateRandomIngverb,
+  '$randomAdjective': generateRandomAdjective,
+  '$randomWord': generateRandomWord,
+  '$randomWords': generateRandomWords,
+  '$randomPhrase': generateRandomPhrase,
+  '$randomLoremWord': generateRandomLoremWord,
+  '$randomLoremWords': generateRandomLoremWords,
+  '$randomLoremSentence': generateRandomLoremSentence,
+  '$randomLoremSentences': generateRandomLoremSentences,
+  '$randomLoremParagraph': generateRandomLoremParagraph,
+  '$randomLoremParagraphs': generateRandomLoremParagraphs,
+  '$randomLoremText': generateRandomLoremText,
+  '$randomLoremSlug': generateRandomLoremSlug,
+  '$randomLoremLines': generateRandomLoremLines
+};
+
+/**
+ * replacePlaceholders
+ * Replaces all known placeholders in the given text with their randomly generated values.
+ * @param {string} text
+ * @returns {string}
+ */
+export function replacePlaceholders(text) {
+  if (typeof text !== 'string') return text;
+
+  // For each placeholder, replace all occurrences in the text
+  for (const placeholder in placeholderFunctions) {
+    const fn = placeholderFunctions[placeholder];
+    // Use global regex with escape for special chars
+    const regex = new RegExp(placeholder.replace('$', '\\$'), 'g');
+    text = text.replace(regex, () => fn());
+  }
+
+  return text;
+}