diff --git a/packages/bruno-electron/src/ipc/network/cert-utils.js b/packages/bruno-electron/src/ipc/network/cert-utils.js
index 61f72a7f3..4e27da875 100644
--- a/packages/bruno-electron/src/ipc/network/cert-utils.js
+++ b/packages/bruno-electron/src/ipc/network/cert-utils.js
@@ -42,10 +42,17 @@ const getCertsAndProxyConfig = async ({
   httpsAgentRequestFields['ca'] = caCertificates || [];
 
   const { promptVariables } = collection;
+  const collectionVariables = request.collectionVariables || {};
+  const folderVariables = request.folderVariables || {};
+  const requestVariables = request.requestVariables || {};
+
   const brunoConfig = getBrunoConfig(collectionUid, collection);
   const interpolationOptions = {
     globalEnvironmentVariables,
+    collectionVariables,
     envVars,
+    folderVariables,
+    requestVariables,
     runtimeVariables,
     promptVariables,
     processEnvVars
diff --git a/packages/bruno-electron/src/ipc/network/grpc-event-handlers.js b/packages/bruno-electron/src/ipc/network/grpc-event-handlers.js
index 26ee77c47..f1b14e85a 100644
--- a/packages/bruno-electron/src/ipc/network/grpc-event-handlers.js
+++ b/packages/bruno-electron/src/ipc/network/grpc-event-handlers.js
@@ -35,15 +35,18 @@ const registerGrpcEventHandlers = (window) => {
     
     try {
       const requestCopy = cloneDeep(request);
-    
-
       const preparedRequest = await prepareGrpcRequest(requestCopy, collection, environment, runtimeVariables, {});
 
+      const protocolRegex = /^([-+\w]{1,25})(:?\/\/|:)/;
+      if (!protocolRegex.test(preparedRequest.url)) {
+        preparedRequest.url = `http://${preparedRequest.url}`;
+      }
+
       // Get certificates and proxy configuration
       const certsAndProxyConfig = await getCertsAndProxyConfig({
         collectionUid: collection.uid,
         collection,
-        request: requestCopy.request,
+        request: preparedRequest,
         envVars: preparedRequest.envVars,
         runtimeVariables,
         processEnvVars: preparedRequest.processEnvVars,
@@ -171,12 +174,17 @@ const registerGrpcEventHandlers = (window) => {
     try {
       const requestCopy = cloneDeep(request);
       const preparedRequest = await prepareGrpcRequest(requestCopy, collection, environment, runtimeVariables);
-      
+
+      const protocolRegex = /^([-+\w]{1,25})(:?\/\/|:)/;
+      if (!protocolRegex.test(preparedRequest.url)) {
+        preparedRequest.url = `http://${preparedRequest.url}`;
+      }
+
       // Get certificates and proxy configuration
       const certsAndProxyConfig = await getCertsAndProxyConfig({
         collectionUid: collection.uid,
         collection,
-        request: requestCopy.request,
+        request: preparedRequest,
         envVars: preparedRequest.envVars,
         runtimeVariables,
         processEnvVars: preparedRequest.processEnvVars,
@@ -279,6 +287,12 @@ const registerGrpcEventHandlers = (window) => {
     try {
       const requestCopy = cloneDeep(request);
       const preparedRequest = await prepareGrpcRequest(requestCopy, collection, environment, runtimeVariables, {});
+
+      const protocolRegex = /^([-+\w]{1,25})(:?\/\/|:)/;
+      if (!protocolRegex.test(preparedRequest.url)) {
+        preparedRequest.url = `http://${preparedRequest.url}`;
+      }
+
       const interpolationOptions = {
         envVars: preparedRequest.envVars,
         runtimeVariables,
diff --git a/packages/bruno-electron/src/ipc/network/index.js b/packages/bruno-electron/src/ipc/network/index.js
index 685680f93..e1b8e9e1c 100644
--- a/packages/bruno-electron/src/ipc/network/index.js
+++ b/packages/bruno-electron/src/ipc/network/index.js
@@ -112,7 +112,8 @@ const configureRequest = async (
   globalEnvironmentVariables
 ) => {
   const protocolRegex = /^([-+\w]{1,25})(:?\/\/|:)/;
-  if (!protocolRegex.test(request.url)) {
+  const hasVariables = request.url.startsWith('{{');
+  if (!hasVariables && !protocolRegex.test(request.url)) {
     request.url = `http://${request.url}`;
   }
 
diff --git a/packages/bruno-electron/src/ipc/network/interpolate-string.js b/packages/bruno-electron/src/ipc/network/interpolate-string.js
index 0b19249ef..f79a4e75e 100644
--- a/packages/bruno-electron/src/ipc/network/interpolate-string.js
+++ b/packages/bruno-electron/src/ipc/network/interpolate-string.js
@@ -1,7 +1,16 @@
 const { forOwn, cloneDeep } = require('lodash');
 const { interpolate } = require('@usebruno/common');
 
-const interpolateString = (str, { globalEnvironmentVariables, envVars, runtimeVariables, processEnvVars, promptVariables }) => {
+const interpolateString = (str, {
+  globalEnvironmentVariables,
+  collectionVariables,
+  envVars,
+  folderVariables,
+  requestVariables,
+  runtimeVariables,
+  processEnvVars,
+  promptVariables
+}) => {
   if (!str || !str.length || typeof str !== 'string') {
     return str;
   }
@@ -9,6 +18,9 @@ const interpolateString = (str, { globalEnvironmentVariables, envVars, runtimeVa
   processEnvVars = processEnvVars || {};
   runtimeVariables = runtimeVariables || {};
   globalEnvironmentVariables = globalEnvironmentVariables || {};
+  collectionVariables = collectionVariables || {};
+  folderVariables = folderVariables || {};
+  requestVariables = requestVariables || {};
   promptVariables = promptVariables || {};
 
   // we clone envVars because we don't want to modify the original object
@@ -29,7 +41,10 @@ const interpolateString = (str, { globalEnvironmentVariables, envVars, runtimeVa
   // runtimeVariables take precedence over envVars
   const combinedVars = {
     ...globalEnvironmentVariables,
+    ...collectionVariables,
     ...envVars,
+    ...folderVariables,
+    ...requestVariables,
     ...runtimeVariables,
     ...promptVariables,
     process: {