You could just paste this into an .html file and change botId and clientId and that's it. Right?
window.botpressWebChat.init({
"composerPlaceholder": "Answer",
"botConversationDescription": "",
"botId": "",
"hostUrl": "https://cdn.botpress.cloud/webchat/v0",
"messagingUrl": "https://messaging.botpress.cloud",
"clientId": "",
"botName": "",
"emailAddress": "",
"useSessionStorage": true
});