diff --git a/package-lock.json b/package-lock.json
index f9537f2..0b2d255 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,7 +11,7 @@
       "dependencies": {
         "commander": "^11.0.0",
         "graphql": "^16.7.1",
-        "postman-collection": "^4.1.7",
+        "postman-collection": "^4.2.0",
         "prettier": "^3.0.0"
       },
       "bin": {
@@ -11350,9 +11350,9 @@
       }
     },
     "node_modules/postman-collection": {
-      "version": "4.1.7",
-      "resolved": "https://registry.npmjs.org/postman-collection/-/postman-collection-4.1.7.tgz",
-      "integrity": "sha512-fMICmDa6megCH/jKq66MZVcR26wrSn1G/rjIkqrtdB6Df4u/I+XLRbWueQnz91Jwm3FR+su1refy4gwIjLLGLg==",
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/postman-collection/-/postman-collection-4.2.0.tgz",
+      "integrity": "sha512-tvOLgN1h6Kab6dt43PmBoV5kYO/YUta3x0C2QqfmbzmHZe47VTpZ/+gIkGlbNhjKNPUUub5X6ehxYKoaTYdy1w==",
       "dependencies": {
         "@faker-js/faker": "5.5.3",
         "file-type": "3.9.0",
@@ -11363,7 +11363,7 @@
         "mime-format": "2.0.1",
         "mime-types": "2.1.35",
         "postman-url-encoder": "3.0.5",
-        "semver": "7.3.8",
+        "semver": "7.5.4",
         "uuid": "8.3.2"
       },
       "engines": {
@@ -11382,9 +11382,9 @@
       }
     },
     "node_modules/postman-collection/node_modules/semver": {
-      "version": "7.3.8",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.8.tgz",
-      "integrity": "sha512-NB1ctGL5rlHrPJtFDVIVzTyQylMLu9N9VICA6HSFJo8MCGVTMW6gfpicwKmmK/dAjTOrqu5l63JJOpDSrAis3A==",
+      "version": "7.5.4",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.5.4.tgz",
+      "integrity": "sha512-1bCSESV6Pv+i21Hvpxp3Dx+pSD8lIPt8uVjRrxAUt/nbswYc+tK6Y2btiULjd4+fnq15PX+nqQDC7Oft7WkwcA==",
       "dependencies": {
         "lru-cache": "^6.0.0"
       },
diff --git a/package.json b/package.json
index 39b2d50..5331cd1 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
   "dependencies": {
     "commander": "^11.0.0",
     "graphql": "^16.7.1",
-    "postman-collection": "^4.1.7",
+    "postman-collection": "^4.2.0",
     "prettier": "^3.0.0"
   },
   "devDependencies": {
diff --git a/src/index.js b/src/index.js
index 8ccd52b..c4595ec 100644
--- a/src/index.js
+++ b/src/index.js
@@ -6,6 +6,8 @@ const main = async ({
   destDirPath,
   collectionName,
   rawUrl,
+  apiKey,
+  generatePostmanOnly = 'false',
   useVariables = 'false',
   maxDepth = 10,
   encoding = 'utf-8',
@@ -15,11 +17,17 @@ const main = async ({
 
   const parsedSchema = await parseSchema(gqlSchema, JSON.parse(useVariables), maxDepth);
 
-  saveAsFiles(destDirPath, parsedSchema);
+  if (!JSON.parse(generatePostmanOnly)) saveAsFiles(destDirPath, parsedSchema);
 
-  saveAsPostman(destDirPath, parsedSchema, collectionName, rawUrl);
+  if (JSON.parse(generatePostmanOnly) && (!collectionName || !rawUrl))
+    console.warn(
+      '--generatePostmanOnly was set to true but no valid --collectionName or --rawUrl where provided',
+    );
+
+  if (collectionName && rawUrl)
+    saveAsPostman(destDirPath, parsedSchema, collectionName, rawUrl, apiKey);
 };
 
 module.exports = {
   main,
-};
\ No newline at end of file
+};
diff --git a/src/io/saveAsPostman.js b/src/io/saveAsPostman.js
index 0379884..30bb752 100644
--- a/src/io/saveAsPostman.js
+++ b/src/io/saveAsPostman.js
@@ -1,4 +1,4 @@
-const { Collection, ItemGroup, Item, Url } = require('postman-collection');
+const { Collection, ItemGroup, Item, Url, RequestAuth } = require('postman-collection');
 
 const { mkdirSync, writeFileSync } = require('fs');
 const { resolve, join } = require('path');
@@ -22,19 +22,42 @@ const buildItemList = (operations, rawUrl) =>
       }),
   );
 
-const saveAsPostman = (destinationDirectory, parsedSchema, collectionName, rawUrl) => {
+const saveAsPostman = (destinationDirectory, parsedSchema, collectionName, rawUrl, apiKey) => {
   if (!parsedSchema.mutations && !parsedSchema.queries && !parsedSchema.subscriptions) {
     // eslint-disable-next-line no-console
     console.error('No operations found to be saved');
     return;
   }
-  
+
   const newCollection = new Collection({
     info: {
       name: collectionName,
     },
   });
 
+  if (apiKey?.length > 0) {
+    newCollection.auth = new RequestAuth({
+      type: 'apikey',
+      apikey: [
+        {
+          key: 'value',
+          value: apiKey,
+          type: 'string',
+        },
+        {
+          key: 'key',
+          value: 'x-api-key',
+          type: 'string',
+        },
+        {
+          key: 'in',
+          value: 'header',
+          type: 'string',
+        },
+      ],
+    });
+  }
+
   if (parsedSchema.mutations) {
     newCollection.items.add(
       new ItemGroup({
diff --git a/src/standAlone.js b/src/standAlone.js
index 7e1a111..35dcbfa 100644
--- a/src/standAlone.js
+++ b/src/standAlone.js
@@ -10,6 +10,8 @@ program
   )
   .option('--collectionName [value]', 'Name to use name the Postman Collection')
   .option('--rawUrl [value]', 'GraphQL API endpoint URL, used to generate the Postman Collection')
+  .option('--apiKey [value]', 'API Key, will be used to generate a x-api-key header')
+  .option('--generatePostmanOnly [value]', 'Defines if only the postman collection should be generated', 'false')
   .option('--maxDepth [value]', 'query depth you want to limit (The default is 10)', 10)
   .option('--useVariables [value]', 'Defines if variables should be used while generating the requests', 'true')
   .option('--encoding [value]', 'The encoding to use while reading the files (The default is utf-8)', 'utf-8')