diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..84469d3
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,2 @@
+API_URL=https://api.chatenium.hu
+CDN_URL=https://cdn.chatenium.hu
diff --git a/.gitea/workflows/test.yml b/.gitea/workflows/test.yml
index 6ccaac6..e768698 100644
--- a/.gitea/workflows/test.yml
+++ b/.gitea/workflows/test.yml
@@ -47,4 +47,7 @@ jobs:
       - name: Run Vitest
         run: |
           npm install
-          npm test
\ No newline at end of file
+          npm test
+        env:
+          API_URL: http://api:3000
+          CDN_URL: http://cdn:4000
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 980ca42..dfe76f3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,4 +10,7 @@ yarn-error.log*
 
 .vscode/*
 .idea/*
-.DS_Store
\ No newline at end of file
+.DS_Store
+.env
+.env.*
+!.env.example
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 17daf55..6eb00a8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,10 +10,12 @@
       "dependencies": {
         "@faker-js/faker": "^10.4.0",
         "axios": "^1.14.0",
+        "dotenv": "^17.4.0",
         "msw": "^2.12.14",
         "uuid": "^13.0.0"
       },
       "devDependencies": {
+        "@types/node": "^25.5.2",
         "typescript": "^5.5.3",
         "vitest": "^4.1.2"
       }
@@ -534,6 +536,16 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/node": {
+      "version": "25.5.2",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-25.5.2.tgz",
+      "integrity": "sha512-tO4ZIRKNC+MDWV4qKVZe3Ql/woTnmHDr5JD8UI5hn2pwBrHEwOEMZK7WlNb5RKB6EoJ02gwmQS9OrjuFnZYdpg==",
+      "devOptional": true,
+      "license": "MIT",
+      "dependencies": {
+        "undici-types": "~7.18.0"
+      }
+    },
     "node_modules/@types/statuses": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/@types/statuses/-/statuses-2.0.6.tgz",
@@ -836,6 +848,18 @@
         "node": ">=8"
       }
     },
+    "node_modules/dotenv": {
+      "version": "17.4.0",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-17.4.0.tgz",
+      "integrity": "sha512-kCKF62fwtzwYm0IGBNjRUjtJgMfGapII+FslMHIjMR5KTnwEmBmWLDRSnc3XSNP8bNy34tekgQyDT0hr7pERRQ==",
+      "license": "BSD-2-Clause",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://dotenvx.com"
+      }
+    },
     "node_modules/dunder-proto": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/dunder-proto/-/dunder-proto-1.0.1.tgz",
@@ -1858,6 +1882,13 @@
         "node": ">=14.17"
       }
     },
+    "node_modules/undici-types": {
+      "version": "7.18.2",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.18.2.tgz",
+      "integrity": "sha512-AsuCzffGHJybSaRrmr5eHr81mwJU3kjw6M+uprWvCXiNeN9SOGwQ3Jn8jb8m3Z6izVgknn1R0FTCEAP2QrLY/w==",
+      "devOptional": true,
+      "license": "MIT"
+    },
     "node_modules/until-async": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/until-async/-/until-async-3.0.2.tgz",
diff --git a/package.json b/package.json
index 34c685d..64e1707 100644
--- a/package.json
+++ b/package.json
@@ -11,6 +11,7 @@
     "test:watch": "vitest"
   },
   "devDependencies": {
+    "@types/node": "^25.5.2",
     "typescript": "^5.5.3",
     "vitest": "^4.1.2"
   },
@@ -18,6 +19,7 @@
   "dependencies": {
     "@faker-js/faker": "^10.4.0",
     "axios": "^1.14.0",
+    "dotenv": "^17.4.0",
     "msw": "^2.12.14",
     "uuid": "^13.0.0"
   }
diff --git a/src/core/environment.ts b/src/core/environment.ts
index 90edb42..8d15141 100644
--- a/src/core/environment.ts
+++ b/src/core/environment.ts
@@ -3,19 +3,40 @@ export interface SDKConfig {
     cdnUrl: string;
 }
 
-const DefaultEnvironment: SDKConfig = {
-    apiUrl: "https://api.chatenium.hu",
-    cdnUrl: "https://cdn.chatenium.hu",
+const isNode =
+    typeof process !== 'undefined' &&
+    typeof process.versions !== 'undefined' &&
+    typeof process.versions.node !== 'undefined';
+
+if (isNode) {
+    try {
+        require('dotenv').config();
+    } catch { }
 }
 
-let currentConfig = {...DefaultEnvironment}
+const getEnv = (key: string): string | undefined => {
+    if (!isNode) return undefined;
+    return process.env?.[key];
+};
+
+const DefaultEnvironment: SDKConfig = {
+    apiUrl: getEnv('API_URL') ?? "https://api.chatenium.hu",
+    cdnUrl: getEnv('CDN_URL') ?? "https://cdn.chatenium.hu",
+};
+
+let currentConfig: SDKConfig = { ...DefaultEnvironment };
 
 export const environment = {
-    get: () => currentConfig,
-    overwrite: (newConfig: Partial<SDKConfig>) => {
+    get(): SDKConfig {
+        return { ...currentConfig };
+    },
+    overwrite(newConfig: Partial<SDKConfig>): void {
         currentConfig = {
             ...currentConfig,
             ...newConfig,
         };
     },
-}
\ No newline at end of file
+    reset(): void {
+        currentConfig = { ...DefaultEnvironment };
+    }
+};
\ No newline at end of file