Plain HTML Integration

Add the Maison concierge chat widget to any static HTML page in two steps — no build tools or frameworks required. Plain HTML official site ↗

Prerequisites

Access to edit your HTML files
Your Client UUID — find it in the Business Console under Settings
The page must be served over HTTP/HTTPS (not opened directly as a file)

Steps

1
Add the script tag to <head>
Paste the following line inside your <head> element. It loads the widget bundle from Maison's CDN.
html
```
<script src="https://agent.maison-labs.com/agent-inject.bundle.js"></script>
```

Add the init script before </body>

Paste this script block just before your closing </body> tag. Replace YOUR_CLIENT_UUID with the UUID from your Business Console.

html

<script>
  document.addEventListener('DOMContentLoaded', function() {
    function getQueryParam(param) {
      var queryString = window.location.search;
      var urlParams = new URLSearchParams(queryString);
      return urlParams.get(param);
    }
    var sessionId = getQueryParam('mcbsid');
    var mcbs = window.initMcbs({
      clientId: 'YOUR_CLIENT_UUID',
      sessionId: sessionId,
      // locale: 'en-US',                     // Override browser locale
      // iconPosition: { top: 0, bottom: 20, left: 0, right: 20 },  // Chat icon position (px)
      // onSessionUpdate: function(id) { console.log('Session:', id); },
      // onLocaleUpdate: function(locale) { console.log('Locale:', locale); },
    });
    mcbs.showIcon();
  });
</script>

Save and open your page in a browser
Load or reload your page. Within a few seconds you should see the Maison chat icon appear in the bottom-right corner.
Verify in DevTools
Open your browser DevTools, switch to the Elements tab, and look for #maison-chat-icon in the DOM. If it's present, the widget initialised correctly.

Full page example

A complete minimal HTML page with both snippets in their correct positions.

html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
    <title>My Hotel</title>

    <!-- Maison chat widget -->
    <script src="https://agent.maison-labs.com/agent-inject.bundle.js"></script>
  </head>
  <body>
    <h1>Welcome to our hotel</h1>

    <!-- Maison chat init — placed at end of body -->
    <script>
      document.addEventListener('DOMContentLoaded', function() {
        function getQueryParam(param) {
          var queryString = window.location.search;
          var urlParams = new URLSearchParams(queryString);
          return urlParams.get(param);
        }
        var sessionId = getQueryParam('mcbsid');
        var mcbs = window.initMcbs({
          clientId: 'YOUR_CLIENT_UUID',
          sessionId: sessionId,
          // locale: 'en-US',                     // Override browser locale
          // iconPosition: { top: 0, bottom: 20, left: 0, right: 20 },  // Chat icon position (px)
          // onSessionUpdate: function(id) { console.log('Session:', id); },
          // onLocaleUpdate: function(locale) { console.log('Locale:', locale); },
        });
        mcbs.showIcon();
      });
    </script>
  </body>
</html>

For the full list of configuration options, control methods, and callbacks, see the Widget SDK Reference.

Common mistakes

Calling initMcbs before the bundle loads. If you place the init script in <head> before the agent-inject.bundle.js script tag, window.initMcbs will be undefined. Always place the init script after the bundle tag, or use DOMContentLoaded.

Forgetting DOMContentLoaded. If you call initMcbs at the top of a bare <script> tag that loads synchronously, it may run before the DOM is ready. Wrapping in DOMContentLoaded is the safest pattern.

Using defer without adjusting the init script. Adding defer to the bundle script tag delays execution until after parsing. The DOMContentLoaded listener pattern above handles this correctly — do not remove it if you add defer.

Using string values for iconPosition. Write bottom: 20, not bottom: '20px'. Values are plain numbers representing pixels — do not include units.

Not sure if it's set up correctly? Use the Site Diagnostic tool.