diff --git a/EnvelopeGenerator.Web/wwwroot/js/envelope-api.js b/EnvelopeGenerator.Web/wwwroot/js/envelope-api.js
index 7e6eecd2..cde8c2bb 100644
--- a/EnvelopeGenerator.Web/wwwroot/js/envelope-api.js
+++ b/EnvelopeGenerator.Web/wwwroot/js/envelope-api.js
@@ -1,106 +1,111 @@
 //#region parameters
 const env = Object.freeze({
-  __lazyXsrfToken: new Lazy(() => document.getElementsByName('__RequestVerificationToken')[0].value),
-  get xsrfToken() {
-    return this.__lazyXsrfToken.value;
-  }
+    __lazyXsrfToken: new Lazy(() => document.getElementsByName('__RequestVerificationToken')[0].value),
+    get xsrfToken() {
+        return this.__lazyXsrfToken.value;
+    }
 })
 
 const url = Object.freeze({
-  reject: `/api/annotation/reject`,
-  share: `/api/readonly`
+    reject: `/api/annotation/reject`,
+    share: `/api/readonly`
 });
 //#endregion
 
 //#region request helper methods
 function sendRequest(method, url, body = undefined) {
-  const options = {
-    credentials: 'include',
-    method: method,
-    headers: {
-      'X-XSRF-TOKEN': env.xsrfToken
+    const urlObj = new URL(url, window.location.origin);
+    if (!urlObj.searchParams.has("envKey")) {
+        urlObj.searchParams.set("envKey", ENV_KEY);
     }
-  }
 
-  if (body !== undefined) {
-    options.body = JSON.stringify(body);
-    options.headers['Content-Type'] = 'application/json';
-  }
+    const options = {
+        credentials: 'include',
+        method: method,
+        headers: {
+            'X-XSRF-TOKEN': env.xsrfToken
+        }
+    }
 
-  return fetch(url, options);
+    if (body !== undefined) {
+        options.body = JSON.stringify(body);
+        options.headers['Content-Type'] = 'application/json';
+    }
+
+    return fetch(urlObj, options);
 }
 
 function getRequest(url) {
-  return sendRequest('GET', url);
+    return sendRequest('GET', url);
 }
 
 function getJson(url) {
-  return sendRequest('GET', url).then(res => {
-    if (res.ok)
-      return res.json();
-    throw new Error(`Request failed with status ${res.status}`);
-  });
+    return sendRequest('GET', url).then(res => {
+        if (res.ok)
+            return res.json();
+        throw new Error(`Request failed with status ${res.status}`);
+    });
 }
 
 function postRequest(url, body = undefined) {
-  return sendRequest('POST', url, body);
+    return sendRequest('POST', url, body);
 }
 
 function reload() {
-  window.location.reload();
+    window.location.reload();
 }
 
 function redirect(url) {
-  window.location.href = url;
+    window.location.href = url;
 }
 //#endregion
 
 //#region envelope
 function signEnvelope(annotations) {
-  return postRequest(`/api/annotation`, annotations)
+    return postRequest(`/api/annotation`, annotations)
 }
 
 async function getAnnotationParams(leftInInch = 0, topInInch = 0, inchToPointFactor = 72) {
-  const annotParams = await getJson("/api/Config/Annotations");
+    const annotParams = await getJson("/api/Config/Annotations");
 
-  for (var key in annotParams) {
-    var annot = annotParams[key];
-    annot.width *= inchToPointFactor;
-    annot.height *= inchToPointFactor;
-    annot.left += leftInInch - 0.7;
-    annot.left *= inchToPointFactor;
-    annot.top += topInInch - 0.5;
-    annot.top *= inchToPointFactor;
-  }
+    for (var key in annotParams) {
+        var annot = annotParams[key];
+        annot.width *= inchToPointFactor;
+        annot.height *= inchToPointFactor;
+        annot.left += leftInInch - 0.7;
+        annot.left *= inchToPointFactor;
+        annot.top += topInInch - 0.5;
+        annot.top *= inchToPointFactor;
+    }
 
-  return annotParams;
+    return annotParams;
 }
 
 function rejectEnvelope(reason) {
-  return postRequest(url.reject, reason);
+    return postRequest(url.reject, reason);
 }
 
 function shareEnvelope(receiverMail, dateValid) {
-  return postRequest(url.share, { receiverMail: receiverMail, dateValid: dateValid });
+    return postRequest(url.share, { receiverMail: receiverMail, dateValid: dateValid });
 }
 //#endregion
 
 async function setLanguage(language) {
-  const hasLang = await getJson('/api/localization/lang')
-    .then(langs => langs.includes(language));
+    const hasLang = await getJson('/api/localization/lang')
+        .then(langs => langs.includes(language));
 
-  if (hasLang)
-    postRequest(`/api/localization/lang/${language}`)
-      .then(response => {
-        if (response.redirected)
-          redirect(response.url);
-      });
+    if (hasLang)
+        postRequest(`/api/localization/lang/${language}`)
+            .then(response => {
+                if (response.redirected)
+                    redirect(response.url);
+            });
 }
 
 function logout() {
-  return postRequest(`/auth/logout`)
-    .then(res => {
-      if (res.ok)
-        window.location.href = "/";
-    });
+    return postRequest(`/auth/logout`)
+        .then(res => {
+            if (res.ok)
+                window.location.href = "/";
+        });
 }
\ No newline at end of file
diff --git a/EnvelopeGenerator.Web/wwwroot/js/envelope-api.min.js b/EnvelopeGenerator.Web/wwwroot/js/envelope-api.min.js
index 5f46c0f8..49abc921 100644
--- a/EnvelopeGenerator.Web/wwwroot/js/envelope-api.min.js
+++ b/EnvelopeGenerator.Web/wwwroot/js/envelope-api.min.js
@@ -1 +1 @@
-function sendRequest(n,t,i=undefined){const r={credentials:"include",method:n,headers:{"X-XSRF-TOKEN":env.xsrfToken}};return i!==undefined&&(r.body=JSON.stringify(i),r.headers["Content-Type"]="application/json"),fetch(t,r)}function getRequest(n){return sendRequest("GET",n)}function getJson(n){return sendRequest("GET",n).then(n=>{if(n.ok)return n.json();throw new Error(`Request failed with status ${n.status}`);})}function postRequest(n,t=undefined){return sendRequest("POST",n,t)}function reload(){window.location.reload()}function redirect(n){window.location.href=n}function signEnvelope(n){return postRequest(`/api/annotation`,n)}async function getAnnotationParams(n=0,t=0,i=72){var f,r;const u=await getJson("/api/Config/Annotations");for(f in u)r=u[f],r.width*=i,r.height*=i,r.left+=n-.7,r.left*=i,r.top+=t-.5,r.top*=i;return u}function rejectEnvelope(n){return postRequest(url.reject,n)}function shareEnvelope(n,t){return postRequest(url.share,{receiverMail:n,dateValid:t})}async function setLanguage(n){const t=await getJson("/api/localization/lang").then(t=>t.includes(n));t&&postRequest(`/api/localization/lang/${n}`).then(n=>{n.redirected&&redirect(n.url)})}function logout(){return postRequest(`/auth/logout`).then(n=>{n.ok&&(window.location.href="/")})}const env=Object.freeze({__lazyXsrfToken:new Lazy(()=>document.getElementsByName("__RequestVerificationToken")[0].value),get xsrfToken(){return this.__lazyXsrfToken.value}}),url=Object.freeze({reject:`/api/annotation/reject`,share:`/api/readonly`});
\ No newline at end of file
+function sendRequest(n,t,i=undefined){const r=new URL(t,window.location.origin);r.searchParams.has("envKey")||r.searchParams.set("envKey",ENV_KEY);const u={credentials:"include",method:n,headers:{"X-XSRF-TOKEN":env.xsrfToken}};return i!==undefined&&(u.body=JSON.stringify(i),u.headers["Content-Type"]="application/json"),fetch(r,u)}function getRequest(n){return sendRequest("GET",n)}function getJson(n){return sendRequest("GET",n).then(n=>{if(n.ok)return n.json();throw new Error(`Request failed with status ${n.status}`);})}function postRequest(n,t=undefined){return sendRequest("POST",n,t)}function reload(){window.location.reload()}function redirect(n){window.location.href=n}function signEnvelope(n){return postRequest(`/api/annotation`,n)}async function getAnnotationParams(n=0,t=0,i=72){var f,r;const u=await getJson("/api/Config/Annotations");for(f in u)r=u[f],r.width*=i,r.height*=i,r.left+=n-.7,r.left*=i,r.top+=t-.5,r.top*=i;return u}function rejectEnvelope(n){return postRequest(url.reject,n)}function shareEnvelope(n,t){return postRequest(url.share,{receiverMail:n,dateValid:t})}async function setLanguage(n){const t=await getJson("/api/localization/lang").then(t=>t.includes(n));t&&postRequest(`/api/localization/lang/${n}`).then(n=>{n.redirected&&redirect(n.url)})}function logout(){return postRequest(`/auth/logout`).then(n=>{n.ok&&(window.location.href="/")})}const env=Object.freeze({__lazyXsrfToken:new Lazy(()=>document.getElementsByName("__RequestVerificationToken")[0].value),get xsrfToken(){return this.__lazyXsrfToken.value}}),url=Object.freeze({reject:`/api/annotation/reject`,share:`/api/readonly`});
\ No newline at end of file