Build smarter chatbots
Everything you need to install, configure, and manage your Rexium AI chatbot. From quick setup to advanced customization.
Getting Started
Get your AI chatbot live in under 5 minutes. Here's a quick overview of the process:
1. Create Account
Sign up at rexium.ai with email or Google. Your Business is ready in seconds.
2. Add Knowledge
Upload your FAQs, product data, or website content. The AI learns from your actual business data and answers customers based on it.
3. Install Widget
Copy a single script tag to your website. Works with Shopify, WordPress, or any HTML site.
Quick tip
After creating your account, head to Settings → Widget to customize colors and behavior, then go to Knowledge Base to add your content. The widget starts working immediately — even before you add knowledge, it uses your general settings to respond.
Installation
Add the Rexium widget to any website with a single script tag. Copy the snippet from your dashboard (Overview → Install Widget) or use the template below:
Any HTML Website
Paste this before the closing body tag:
<script src="https://widget.rexium.ai/chat.js" data-tenant-id="YOUR_TENANT_ID" defer ></script>
Shopify
Go to Online Store → Themes → Edit Code → theme.liquid and paste the same snippet before the closing body tag. Alternatively, use the Shopify App (coming soon).
WordPress
Install a "Header/Footer Scripts" plugin (e.g., WPCode) and paste the snippet in the footer section. Or add it directly to your theme's footer.php before the closing body tag.
Important
Replace YOUR_TENANT_ID with your actual tenant ID. You can find it in Settings → General or in the install snippet on the Overview page.
Lift the widget above a fixed menu
If your site has a fixed bottom navigation on mobile, add data-bottom-offset="80" (or any value in px) to the script tag to lift the widget above it. You can also set a default in Settings → Widget.
Widget Customization
Customize the look and feel of your chatbot widget from Settings → Widget in the dashboard. Changes are applied in real-time.
Colors
Set a primary color for the widget bubble, header, and send button. Uses your brand color to blend seamlessly with your site.
Position
Choose between bottom-right or bottom-left placement.
Greeting Message
Set a custom greeting that appears when the chat opens. E.g., "Hi! How can I help you today?"
Auto-Open
Optionally open the chat automatically after a delay when visitors land on your site.
Branding
Show or hide the "Powered by Rexium" badge. Available on Pro and Enterprise plans.
Shadow DOM
The widget uses Shadow DOM by default, ensuring zero CSS conflicts with your site. No configuration needed.
Knowledge Base
The knowledge base is the core of your AI chatbot. It powers answers grounded in your actual business data — not generic responses. Go to Knowledge Base in the dashboard to manage your content.
Manual Entries
Create FAQ-style entries with a title and content. Ideal for return policies, shipping info, business hours, and common questions. Each entry is automatically indexed so the AI can find it.
PDF Upload
Upload PDF documents (product catalogs, manuals, policy docs). The system extracts the text and indexes it so the AI can answer from it. Supports files up to 10MB.
Web Crawler
Enter a URL and the crawler will scrape the page content (and optionally follow links). Great for importing existing help center articles or product pages.
Shopify Sync
Connect your Shopify store to automatically sync products, descriptions, prices, and availability. The AI can then recommend products and create cart links for customers.
How the knowledge base works
When a customer asks a question, the AI searches your business content for the most relevant information and uses it to answer. Responses are grounded in your actual data — no generic answers, no hallucinations.
AI Configuration
Fine-tune how your AI chatbot behaves from Settings → AI.
| Setting | Description |
|---|---|
| Tone | Choose between Professional, Friendly, or Casual. Controls how the AI communicates with visitors. |
| Language | Set a default language or let the AI auto-detect. Supports PT, EN, FR, SV and more. |
| Custom Instructions | Add specific instructions for the AI. E.g., "Always mention our free shipping policy" or "Never discuss competitor products." |
| Bot Name | Set the display name for the AI assistant in the chat widget. |
| Escalation Rules | Define when the AI should escalate to a human agent (e.g., after N unanswered questions, negative sentiment). |
Human Escalation
When the AI can't resolve an issue, conversations can be escalated to your team. The full chat history and context is preserved.
How it works
- A visitor clicks the "Talk to human" button in the widget, or the AI auto-escalates based on your rules.
- The conversation status changes to escalated and the AI stops responding.
- Your team receives a notification via Slack and/or email (configurable in Settings → Escalation).
- An agent clicks "Take Over" in the dashboard to start responding directly.
- Once resolved, the agent marks the conversation as resolved.
Slack Integration
Connect your Slack workspace in Settings → Escalation to receive real-time alerts when conversations are escalated. The notification includes a summary of the conversation and a direct link to the dashboard.
Team Management
Invite team members from Settings → Team. Each agent gets their own login and can be assigned conversations. Roles include owner, admin, and agent.
Billing & Plans
Rexium offers flexible plans for businesses of all sizes. All plans include a 7-day free trial.
| Feature | Starter | Pro | Enterprise |
|---|---|---|---|
| Messages/month | 1,000 | 10,000 | Unlimited |
| Knowledge items | 50 | 500 | Unlimited |
| Team members | 1 | 5 | Unlimited |
| Shopify integration | — | ✓ | ✓ |
| Remove branding | — | ✓ | ✓ |
| Analytics | Basic | Advanced | Full |
| Price | €29/mo | €79/mo | €199/mo |
Manage your subscription from Settings → Billing in the dashboard. Annual plans get a 20% discount. All prices in EUR.
Ready to get started?
Create your account and have your AI chatbot live in under 5 minutes.