diff --git a/src/frontend/src/App.tsx b/src/frontend/src/App.tsx
index 408286b8..f91f8b96 100644
--- a/src/frontend/src/App.tsx
+++ b/src/frontend/src/App.tsx
@@ -13,7 +13,7 @@ import { routes } from './routes'
 import './i18n/init'
 import { queryClient } from '@/api/queryClient'
 import { AppInitialization } from '@/components/AppInitialization'
-import { SdkCreateButton } from './features/rooms/routes/sdk/CreateButton'
+import { SdkCreateButton } from './features/sdk/routes/CreateButton'
 
 function App() {
   const { i18n } = useTranslation()
diff --git a/src/frontend/src/features/sdk/SdkReverseClient.tsx b/src/frontend/src/features/sdk/SdkReverseClient.tsx
new file mode 100644
index 00000000..773c04e7
--- /dev/null
+++ b/src/frontend/src/features/sdk/SdkReverseClient.tsx
@@ -0,0 +1,25 @@
+export enum ClientMessageType {
+  ROOM_CREATED = 'ROOM_CREATED',
+}
+
+export class SdkReverseClient {
+  /**
+   * TODO: Use API Key. Must be based on some sort of credentials ?
+   */
+  static getAllowTargetOrigin() {
+    return '*'
+  }
+
+  static post(type: ClientMessageType, data: unknown = {}) {
+    console.log('POST !', type, data, window.parent)
+    // TODO: Make sure to use the correct origin.
+    window.parent.postMessage(
+      {
+        type,
+        data,
+      },
+      SdkReverseClient.getAllowTargetOrigin()
+    )
+    // TODO: Maybe use this to enforce security.
+  }
+}
diff --git a/src/frontend/src/features/rooms/routes/sdk/CreateButton.tsx b/src/frontend/src/features/sdk/routes/CreateButton.tsx
similarity index 74%
rename from src/frontend/src/features/rooms/routes/sdk/CreateButton.tsx
rename to src/frontend/src/features/sdk/routes/CreateButton.tsx
index 032a98d4..b391a2ed 100644
--- a/src/frontend/src/features/rooms/routes/sdk/CreateButton.tsx
+++ b/src/frontend/src/features/sdk/routes/CreateButton.tsx
@@ -1,14 +1,13 @@
 import { Button } from '@/primitives/Button'
 import { useTranslation } from 'react-i18next'
-import { generateRoomId } from '../../utils/generateRoomId'
-import { useCreateRoom } from '../../api/createRoom'
 import { usePersistentUserChoices } from '@livekit/components-react'
 import { useState } from 'react'
 import { getRouteUrl } from '@/navigation/getRouteUrl'
 import { css } from '@/styled-system/css'
 import { RiCheckLine, RiFileCopyLine } from '@remixicon/react'
-import { Loader } from '@/primitives/Loader'
 import { VisioIcon } from '@/assets/VisioIcon'
+import { generateRoomId, useCreateRoom } from '../../rooms'
+import { ClientMessageType, SdkReverseClient } from '../SdkReverseClient'
 
 export const SdkCreateButton = () => {
   const { t } = useTranslation('sdk', { keyPrefix: 'createButton' })
@@ -30,8 +29,11 @@ export const SdkCreateButton = () => {
         const roomUrlTmp = getRouteUrl('room', data.slug)
         setRoomUrl(roomUrlTmp)
         setIsLoading(false)
+        SdkReverseClient.post(ClientMessageType.ROOM_CREATED, {
+          url: roomUrlTmp,
+        })
       })
-    }, 2000)
+    }, 0)
   }
 
   const [isCopied, setIsCopied] = useState(false)
@@ -44,33 +46,39 @@ export const SdkCreateButton = () => {
   }
 
   return (
-    <div className={css({})}>
+    <div
+      className={css({
+        paddingTop: '3px',
+        paddingLeft: '3px',
+      })}
+    >
       {roomUrl ? (
         <Button
-          variant={isCopied ? 'success' : 'tertiaryText'}
+          variant={isCopied ? 'success' : 'quaternary'}
           onHoverChange={setIsHovered}
           data-attr="sdk-create-copy"
           onPress={copy}
+          className={css({
+            ...(isCopied
+              ? {}
+              : {
+                  paddingLeft: 0,
+                }),
+          })}
           icon={
             isCopied ? (
               <RiCheckLine size={18} style={{ marginRight: '8px' }} />
-            ) : undefined
+            ) : (
+              <RiFileCopyLine size={24} />
+            )
           }
         >
           {isCopied ? (
             th('laterMeetingDialog.copied')
           ) : (
-            <div
-              className={css({
-                display: 'flex',
-                alignItems: 'center',
-                color: 'greyscale.600',
-                gap: '0.5rem',
-              })}
-            >
-              <div>{roomUrl}</div>
-              <RiFileCopyLine size={24} />
-            </div>
+            <>
+              {isHovered ? th('laterMeetingDialog.copy') : <div>{roomUrl}</div>}
+            </>
           )}
         </Button>
       ) : (
diff --git a/src/frontend/src/primitives/Button.tsx b/src/frontend/src/primitives/Button.tsx
index 1724edd1..9e9cd1a2 100644
--- a/src/frontend/src/primitives/Button.tsx
+++ b/src/frontend/src/primitives/Button.tsx
@@ -23,12 +23,13 @@ export const Button = ({
   ...props
 }: ButtonProps) => {
   const [variantProps, componentProps] = buttonRecipe.splitVariantProps(props)
+  const { className, ...remainingComponentProps } = componentProps
 
   return (
     <TooltipWrapper tooltip={tooltip} tooltipType={tooltipType}>
       <RACButton
-        className={buttonRecipe(variantProps)}
-        {...(componentProps as RACButtonsProps)}
+        className={[buttonRecipe(variantProps), className].join(' ')}
+        {...(remainingComponentProps as RACButtonsProps)}
       >
         {!props.loading && props.icon}
         {props.loading && <Loader />}
diff --git a/src/frontend/src/primitives/buttonRecipe.ts b/src/frontend/src/primitives/buttonRecipe.ts
index aea4deba..434822bb 100644
--- a/src/frontend/src/primitives/buttonRecipe.ts
+++ b/src/frontend/src/primitives/buttonRecipe.ts
@@ -140,6 +140,18 @@ export const buttonRecipe = cva({
           color: 'primaryDark.100',
         },
       },
+      quaternaryText: {
+        backgroundColor: 'transparent',
+        color: 'greyscale.600',
+        '&[data-hovered]': {
+          backgroundColor: 'greyscale.100',
+          color: 'greyscale.700',
+        },
+        '&[data-pressed]': {
+          backgroundColor: 'greyscale.100',
+          color: 'greyscale.700',
+        },
+      },
       greyscale: {
         backgroundColor: 'transparent',
         color: 'greyscale.400',
diff --git a/src/frontend/src/routes.ts b/src/frontend/src/routes.ts
index e50d2665..46cc6d37 100644
--- a/src/frontend/src/routes.ts
+++ b/src/frontend/src/routes.ts
@@ -1,6 +1,5 @@
 import { FeedbackRoute, RoomRoute, roomIdPattern } from '@/features/rooms'
 import { HomeRoute } from '@/features/home'
-import { SdkCreateButton } from './features/rooms/routes/sdk/CreateButton'
 
 export const routes: Record<
   'home' | 'room' | 'feedback' | 'sdkCreateButton',
@@ -28,11 +27,6 @@ export const routes: Record<
     path: '/feedback',
     Component: FeedbackRoute,
   },
-  // sdkCreateButton: {
-  //   name: 'sdkCreateButton',
-  //   path: '/sdk/create-button',
-  //   Component: SdkCreateButton,
-  // },
 }
 
 export type RouteName = keyof typeof routes
diff --git a/src/sdk/consumer/src/App.tsx b/src/sdk/consumer/src/App.tsx
index 7f1512ec..9535420a 100644
--- a/src/sdk/consumer/src/App.tsx
+++ b/src/sdk/consumer/src/App.tsx
@@ -1,11 +1,41 @@
 import { VisioCreateButton } from "@gouvfr-lasuite/visio-sdk";
 import "./App.css";
+import { useState } from "react";
 
 function App() {
+  const [roomUrl, setRoomUrl] = useState("");
+
   return (
-    <div>
-      <VisioCreateButton />
-    </div>
+    <form className="form">
+      <div className="header">
+        <h2>Create event</h2>
+        <span>Visio demo app</span>
+      </div>
+      <div className="group">
+        <label>Subject</label>
+        <input type="text" />
+      </div>
+      <div className="group">
+        <label>Place</label>
+        <input type="text" />
+      </div>
+      <div className="group">
+        <label>Visioconference</label>
+        <VisioCreateButton onRoomCreated={setRoomUrl} />
+      </div>
+      <div className="group">
+        <label>Description</label>
+        <textarea />
+      </div>
+      <button
+        type="button"
+        onClick={() => {
+          alert("Room url: " + roomUrl);
+        }}
+      >
+        Create
+      </button>
+    </form>
   );
 }
 
diff --git a/src/sdk/consumer/src/index.css b/src/sdk/consumer/src/index.css
index e69de29b..caec1e5f 100644
--- a/src/sdk/consumer/src/index.css
+++ b/src/sdk/consumer/src/index.css
@@ -0,0 +1,74 @@
+* {
+  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
+    "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif,
+    "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
+  box-sizing: border-box;
+  color: rgb(9, 9, 11);
+}
+
+body {
+  background-color: oklch(0.985 0 0);
+  display: flex;
+  justify-content: center;
+  padding-top: 2rem;
+}
+
+h2 {
+  margin: 0;
+}
+
+span {
+  font-size: 14px;
+  color: oklch(0.372 0.044 257.287);
+}
+
+.form {
+  display: flex;
+  flex-direction: column;
+  width: 500px;
+  gap: 1rem;
+  border: 1px solid #e5e7eb;
+  background-color: white;
+  border-radius: 1rem;
+  padding: 3rem;
+}
+
+.header {
+  margin-bottom: 2rem;
+}
+
+.group {
+  display: flex;
+  flex-direction: column;
+  align-items: flex-start;
+  gap: 0.5rem;
+}
+
+label {
+  color: rgb(9, 9, 11);
+  font-weight: 500;
+  font-size: 14px;
+}
+
+input,
+textarea {
+  border: 1px rgb(228, 228, 231) solid;
+  border-radius: 6px;
+  height: 36px;
+  width: 100%;
+  padding: 0.75rem;
+}
+
+textarea {
+  height: 200px;
+}
+
+button {
+  background-color: rgb(45, 45, 70);
+  color: white;
+  height: 46px;
+  border-radius: 4px;
+  font-size: 16px;
+  font-weight: 300;
+  cursor: pointer;
+}
diff --git a/src/sdk/library/src/create/VisioCreateButton.tsx b/src/sdk/library/src/create/VisioCreateButton.tsx
index 9464cc0c..2bb4ca99 100644
--- a/src/sdk/library/src/create/VisioCreateButton.tsx
+++ b/src/sdk/library/src/create/VisioCreateButton.tsx
@@ -2,9 +2,11 @@ import { DEFAULT_CONFIG } from "@/Config";
 import { ClientMessageType } from "@/Types";
 import { useEffect, useRef } from "react";
 
-export const VisioCreateButton = () => {
-  const iframe = useRef<HTMLIFrameElement>(null);
-
+export const VisioCreateButton = ({
+  onRoomCreated,
+}: {
+  onRoomCreated: (roomUrl: string) => void;
+}) => {
   useEffect(() => {
     window.onmessage = (event) => {
       // TODO: Verify origin.
@@ -16,16 +18,20 @@ export const VisioCreateButton = () => {
       if (event.data.type === ClientMessageType.ROOM_CREATED) {
         console.log("event", event);
         const data = event.data.data;
+        const roomUrl = data.url;
+        console.log("roomUrl", roomUrl);
+        onRoomCreated(roomUrl);
       }
     };
   }, []);
 
   return (
     <iframe
+      allow="clipboard-read; clipboard-write"
       src={DEFAULT_CONFIG.url + "/create-button"}
       style={{
         width: "100%",
-        height: "48px",
+        height: "52px",
         border: "none",
       }}
     ></iframe>