OpenCart Chatbot Builder

OpenCart is one of the most popular free, open-source shopping cart platforms in the world, powering hundreds of thousands of online stores across every industry and region. Store owners choose OpenCart for its lightweight footprint, straightforward admin, and enormous extension marketplace - and because it puts them in full control of their own storefront without monthly platform fees.

That independence comes with a challenge: OpenCart stores do not ship with modern customer engagement tools. Shoppers arriving on your store expect instant answers about shipping, stock, sizing, and returns. If they cannot get those answers, they leave - usually to a competitor that responds faster.

The Conferbot OpenCart extension solves this in about three minutes of setup. It embeds the Conferbot AI chat widget on every storefront page, passes the logged-in customer's identity and live cart context to the bot, and gives you the full Conferbot platform behind it: a no-code visual flow builder, AI-powered answers, live agent handover, and a shared team inbox.

The extension is intentionally minimal by design. The only credential it needs is your Chatbot ID - no API keys, no workspace IDs, no theme edits. Everything about how the widget looks and behaves is configured centrally in the Conferbot dashboard, so the same bot you run on OpenCart can also run on your website, WordPress blog, or PrestaShop store without rebuilding anything.

This guide covers how the extension works internally, real installation steps, configuration options, exactly what data is passed to the bot, use cases for OpenCart merchants, and how Conferbot compares to generic live chat modules in the OpenCart marketplace. The extension is open source: Conferbot/conferbot-opencart on GitHub, with a full merchant guide on the Conferbot developer portal.

The Conferbot OpenCart extension is a thin, careful wrapper around the official Conferbot web widget embed. On every storefront page it injects the standard loader before the closing head tag:

<script src="https://cdn.conferbot.com/dist/v1/widget.min.js" async></script>

followed by a boot call:

window.ConferbotWidget("YOUR_BOT_ID", "live_chat", options)

The options object carries the logged-in customer's identity (if any) and store context - covered in detail in the context section below. The widget script itself is served from the Conferbot CDN and resolves everything else server-side from the Chatbot ID over Socket.IO (wdt.conferbot.com). That means:

• One credential - the Chatbot ID is the only thing the extension stores. There is no API key or secret sitting in your OpenCart database.
• Zero theme edits - injection happens through OpenCart's event system, registered on the catalog/view/common/header/after event. The extension never modifies header.php or any theme file, so it cannot conflict with theme customizations or vQmod/OCMOD edits.
• Dashboard-driven behavior - position, colors, greeting, language, auto-open rules, and disabled URLs are all delivered at runtime from your Conferbot dashboard settings. Change the bot's color and every page of your store updates on the next load, with no cache rebuild.

Try it before you sign up

The extension ships with a one-click demo bot. Clicking "Try our demo bot" on the configure screen fills in the public demo Chatbot ID (691c970890527a0468f9b2c9), which works without any Conferbot account. You can install the extension, enable the demo bot, and see a real AI chat conversation running on your own storefront before creating an account at app.conferbot.com.

When you are ready to use your own bot, build one in the visual builder (or start from a template), copy its Bot ID from Share > Embed into website, and paste it into the extension.

There are two ways to get the Conferbot widget onto an OpenCart store: the extension (recommended) or a direct embed in your theme. Both take minutes; the extension does more for you.

Option A: The Conferbot extension (recommended)

One-click install through the OpenCart admin, and the extension automatically passes the logged-in customer's identity and live cart context to the bot. Supports OpenCart 3.0.x, PHP 7.2+.

1. Download conferbot.ocmod.zip from the latest release on GitHub (building from source: zip the repository contents with the upload/ directory at the top level)
2. In your OpenCart admin, go to Extensions > Installer and upload the zip - no FTP needed
3. Go to Extensions > Extensions, choose the Modules type, find Conferbot, and click Install (the green plus). This registers the storefront event that performs the widget injection
4. Click Edit, paste your Chatbot ID (or click "Try our demo bot"), flip the Turn the chat on switch, and Save
5. Open your storefront - the chat bubble appears. Log in as a customer, add a product to the cart, and start a chat: your Conferbot inbox shows the customer's name, email, and live cart context

Option B: Direct embed in your theme

The pre-extension method still works: paste the canonical widget snippet into your catalog theme's footer.twig (or use a theme editor extension) before the closing body tag:

<script src="https://cdn.conferbot.com/dist/v1/widget.min.js" async></script>
<script>window.ConferbotWidget("YOUR_BOT_ID", "live_chat");</script>

Note the trade-off: a direct embed does not pass the logged-in customer or cart context automatically - that is exactly what the extension adds - unless you hand-write the third options argument yourself. Theme edits are also overwritten by theme updates, which the event-based extension is immune to.

Troubleshooting

If the widget does not appear: confirm the module is installed and enabled on the configure screen, the Chatbot ID is correct and the bot is published, the conferbot event exists and is enabled under Extensions > Events, and refresh the theme/SASS caches under Dashboard > gear icon > Refresh. The full troubleshooting checklist lives in the developer portal guide.

The configure screen keeps merchant-facing settings to the minimum that actually needs to live in OpenCart. Everything else - the parts you will iterate on weekly, like greetings and colors - stays in the Conferbot dashboard where changes apply instantly across all your channels.

Setting	Description
Chatbot ID	Required. The 24-character hex ID of your bot. In the Conferbot dashboard open your bot, go to Share > Embed into website, and copy the Bot ID.
Turn the chat on	Master on/off switch for the storefront widget.
How the chat appears	Advanced. Floating chat bubble (default, embed type live_chat) or popup window (popup_chat).
Widget script URL	Advanced. Leave as is for the Conferbot CDN. Useful for staging or self-hosted widget builds.

Forgiving Chatbot ID input

You do not need to carefully extract the bare ID. Paste any of the following into the Chatbot ID field and the extension extracts and validates the 24-character hex ID automatically on save:

• The bare Bot ID
• The full embed snippet copied from the dashboard
• A Conferbot dashboard URL containing the bot ID

Where settings are stored

Settings are stored using OpenCart's standard settings system under the module_conferbot code: module_conferbot_status, module_conferbot_bot_id, module_conferbot_embed_type, and module_conferbot_script_url. Nothing else is written to your database.

Page-level control

The OpenCart extension renders the widget on every storefront page. If you need to hide the chat on specific URLs (for example, a landing page with its own funnel), use the disabled URLs setting in the Conferbot dashboard under Customize - the widget checks that list at runtime, so no OpenCart-side changes are needed. If per-page-type toggles inside the admin are important to you, the PrestaShop module and WordPress plugin versions of this integration include them.

A chatbot is only as useful as the context it has. The OpenCart extension gathers live store and customer data on every page render and passes it into the widget boot call, so both the bot's automated flows and your human agents see who they are talking to and what is in the cart.

Customer identity (logged-in customers)

When a customer is logged into their OpenCart account, the extension passes a user object with:

• id - the OpenCart customer ID
• name - the customer's name
• email - the customer's email address

For guests, the user object is simply omitted - no placeholder data, no tracking identifiers.

Store and cart context (all visitors)

Every visitor's session includes a customData object with:

Field	Example	Why it matters
platform	opencart	Lets flows branch per sales channel
storeName	Your Store	Personalizes bot messages
storeUrl	https://yourstore.com	Identifies multi-store setups
storeLanguage	en-gb	Route to the right language flow
storeCurrency	USD	Quote prices correctly in chat
cartTotal	149.90	Prioritize high-value carts
cartItemCount	3	Detect active shopping sessions

What this enables

In the Conferbot inbox, an agent picking up a chat sees "Maria Santos, [email protected], cart: 149.90 USD, 3 items" before typing a word. In automated flows, you can branch on cart value - for example, offering free shipping help when cartTotal is above a threshold, or a first-purchase discount when the cart is empty. The context updates on each page load, so it stays current as the customer shops.

The inlined JSON is script-context-safe: customer names containing quotes, angle brackets, or even a closing script tag cannot break out of the snippet or inject markup. This is covered by dedicated unit tests in the extension's test suite.

Most OpenCart chat extensions inject their code by modifying theme files - either directly or through OCMOD/vQmod XML patches that rewrite header.php or the theme's Twig templates at runtime. That approach is fragile: two extensions patching the same file can conflict, theme updates silently drop the patch, and uninstalling can leave orphaned markup behind.

The Conferbot extension takes the cleaner path that OpenCart 3 was designed for: the event system.

How the event wiring works

• On install, the admin controller registers an event through OpenCart's setting/event model with the code conferbot
• The event triggers on catalog/view/common/header/after - fired after the header template renders on every storefront page
• The action extension/module/conferbot/injectWidget runs, and the catalog controller inserts the loader snippet before the closing head tag in the rendered output
• On uninstall, the event is deregistered and nothing remains in your templates

Why this matters for merchants

• No theme conflicts - your theme files are never touched, so custom themes, journal-style theme frameworks, and existing OCMOD modifications keep working untouched
• Survives theme updates - updating or switching themes does not remove the chat widget
• Clean uninstall - removing the extension removes the event; there is no residue to hunt down
• Inspectable - you can see and toggle the event yourself under Extensions > Events in the admin

Separation of wiring and logic

Architecturally, the OpenCart controllers only wire the platform (settings form, event handler). All real logic - Bot ID parsing and validation, widget option building, JSON escaping, and loader snippet rendering - lives in a single pure PHP library class, system/library/conferbot/loader.php. This keeps the extension auditable in one sitting and makes the behavior testable without an OpenCart installation, which is exactly how the test suite runs.

OpenCart merchants tend to run lean operations - often one or two people handling everything from sourcing to support. A chatbot that answers the repetitive 80% of questions changes what a small team can handle. Common patterns:

1. Pre-sale product questions

Shipping cost, delivery time, stock availability, sizing, and compatibility questions arrive at all hours. A Conferbot flow answers them instantly from your knowledge, and AI answers handle the long tail of phrasings. Shoppers who get an answer in seconds stay in the funnel instead of opening a competitor tab.

2. Cart-aware assistance

Because the extension passes cartTotal and cartItemCount, you can build flows that behave differently for active shoppers. A visitor with a loaded cart lingering on the checkout page can be offered help with payment or shipping questions - the moment where a single answered question rescues the sale.

3. Order status deflection

"Where is my order?" is the single most repetitive support question in e-commerce. A flow that collects the order number and email, then hands off to an agent only when needed, deflects the bulk of these conversations away from your inbox.

4. Lead capture and restock alerts

When a product is out of stock, the bot collects the shopper's email for a back-in-stock notification instead of losing them silently. The same pattern works for quote requests on bulk orders.

5. Multi-language storefronts

OpenCart's multi-language support pairs naturally with the storeLanguage context field: route Spanish-language sessions to a Spanish flow and English sessions to an English flow from a single bot.

6. After-hours coverage

The bot handles evenings and weekends alone, collects contact details for anything it cannot resolve, and your team follows up in the shared inbox the next morning. Explore ready-made e-commerce flows in the template library, and see the broader playbook in our guide to chatbots for e-commerce.

The extension deliberately contains no appearance settings. This is a feature, not a gap: widget styling is configured once in the Conferbot dashboard under Customize, and delivered to the widget at runtime. The extension never duplicates those settings, so there is no risk of the OpenCart admin and the Conferbot dashboard disagreeing about what the widget should look like.

What you control from the dashboard

• Position - bottom-right or bottom-left, with offset control
• Colors and theme - brand colors for the bubble, header, and message accents, plus light/dark theming
• Launcher and avatar - bubble icon, bot avatar, and agent avatars
• Greeting and language - welcome message, input placeholder, and widget UI language
• Behavior - auto-open rules, load delay, proactive prompts on specific pages
• Disabled URLs - suppress the widget on specific paths without touching OpenCart

Why runtime delivery matters

Changes take effect on the next page load for every visitor - no OpenCart cache refresh, no re-saving the module, no deploy. During a sale weekend you can switch the greeting to promote the discount code in the morning and switch it back at night, entirely from the dashboard.

Embed types

The extension supports two embed types, selectable on the configure screen:

• Floating chat bubble (live_chat, default) - the familiar corner launcher that expands into a chat panel
• Popup window (popup_chat) - opens the conversation in a centered popup, useful for stores that want chat to feel like a deliberate action rather than an ambient presence

Because styling lives centrally, the same brand configuration applies whether the bot runs on OpenCart, your marketing site, or any other connected channel - one consistent look everywhere your customers meet you.

The extension puts the full Conferbot platform behind your OpenCart storefront. What runs inside the widget is the same engine that powers every Conferbot channel:

Visual flow builder

Design conversation flows in the drag-and-drop builder: welcome messages, button menus, product FAQs, order-number collection, conditional branches on the context fields the extension passes (cart total, language, login state). No code at any step, and the template library gives you working e-commerce starting points.

AI answers

Connect AI models to answer free-text questions from your own content - shipping policies, product details, store information. The AI handles the questions your buttons did not anticipate, and you control its knowledge and boundaries from the dashboard.

Human handover

When a conversation needs a person - a complaint, a complex order issue, a big quote - the bot hands over to your team. Agents work from the Conferbot shared inbox, where the OpenCart context does real work: the agent sees the customer's name, email, cart total, item count, currency, and which store they are on before sending their first reply. No "can I get your email address?" round-trips with a customer who is already logged in.

One inbox across channels

If you also run the bot on WhatsApp, Messenger, or your website, all conversations land in the same inbox with the same tooling - assignment, tags, canned responses, and analytics. Your OpenCart store becomes one channel in a single, consistent support operation rather than another silo. Read more about balancing automation and humans in chatbot vs live chat.

Anything injected into every page of a store must justify its weight. The extension is engineered so the answer is simple: it adds one async script tag and a small inline boot call, and nothing else.

Async, non-blocking loading

The widget script loads with the async attribute from the Conferbot CDN. The browser downloads and executes it independently of page rendering - your product images, prices, and add-to-cart buttons render exactly as fast as they did before. There is no synchronous request in the critical rendering path and no layout shift: the widget mounts into its own container after the page is interactive.

No server-side weight

On the OpenCart side, the extension's runtime work is building a small options array and echoing a snippet - a few microseconds per request. It adds no database queries beyond OpenCart's standard settings load, no cron jobs, and no external calls from your server. All real-time chat traffic flows directly between the visitor's browser and Conferbot's servers over Socket.IO, never through your hosting.

SEO considerations

• The widget renders client-side after load, so it does not alter your crawlable HTML content, headings, or structured data
• No render-blocking resources are introduced, protecting your Core Web Vitals
• The chat content itself is not indexed - your product pages remain exactly the pages search engines see

Caching notes

OpenCart 3 caches theme output. After installing or reconfiguring the extension, refresh the theme/SASS caches (Dashboard > gear icon > Refresh) if the widget does not appear immediately. Because appearance settings are delivered at runtime from the dashboard rather than baked into the page, day-to-day widget changes never require cache work. For general guidance on adding chat to a site the right way, see how to add a chatbot to your website and website chat widget setup.

Extensions run inside your store with your customers' data, so it is worth knowing how they are built. The Conferbot OpenCart extension is fully open source under GPL-3.0-or-later (matching OpenCart's own license and the marketplace convention), and you can read every line at Conferbot/conferbot-opencart.

Tested where it counts

The extension ships with a suite of 18 PHPUnit tests (60 assertions) covering the logic that actually matters:

• Bot ID extraction - bare ID, full embed snippet, dashboard URL, garbage input, and empty input all resolve correctly or are rejected
• Strict validation - only a valid 24-character hex ID is ever rendered into the page
• Widget option building - guest, logged-in customer, and cart variants, including type casting of totals and counts
• Script-injection safety - the inlined JSON is escaped so hostile customer names (quotes, angle brackets, closing script tags) cannot break out of the script context
• Loader snippet rendering - the exact output injected into your storefront

Because the loader is a pure PHP class with no OpenCart dependencies, the whole suite runs in seconds on any PHP 7.2+ machine - no OpenCart installation required. That same purity means the security-relevant code path is a single readable file.

Minimal surface area

The extension stores four settings, registers one event, and requests nothing else: no admin dashboard widgets, no telemetry, no external calls from your server. The developer portal guide documents the full file layout, and the demo video in the repository shows the complete install-to-chat journey against a real OpenCart 3 store.

Current limitations, stated plainly

Outbound webhooks (order status pushes, product updates, abandoned-cart events from OpenCart into bot flows) are not part of this version - the integration is storefront-side. The context passed at page load (cart totals, identity) covers the live-conversation cases; deeper commerce automation is on the roadmap.

The OpenCart marketplace lists plenty of live chat extensions. Most fall into two categories: simple embed wrappers for generic chat services, and standalone PHP chat scripts that run on your own server. Here is an honest comparison by category rather than by naming specific products:

Capability	Conferbot Extension	Generic chat embed	Self-hosted chat script
AI-powered answers	Built in	Varies, often paid add-on	Rarely
No-code flow builder	Included	Usually chat-only	No
OpenCart customer identity	Automatic	Usually manual setup	Sometimes
Cart total / item context	Automatic	Rarely	Rarely
Theme file modifications	None (event-based)	Varies	Often OCMOD patches
Server load from chat traffic	None (CDN + Socket.IO)	None	Runs on your hosting
Multi-channel inbox (web, WhatsApp, more)	Yes	Varies	No
Open source extension code	Yes (GPL-3.0)	Varies	Varies
Free tier	Yes	Varies	One-time license typical

The honest trade-offs: if you only want a plain human-to-human chat box and nothing else, a minimal embed may be all you need. Self-hosted scripts appeal if you want zero third-party involvement, at the cost of running chat infrastructure on the same server that serves your store.

Conferbot's case is strongest when you want automation doing real work: AI answering pre-sale questions at 3am, flows branching on cart value, and a team inbox that also covers your website and messaging channels. The extension is free, the platform has a free plan, and paid plans start at $19/month when you outgrow it.

You can have a working AI chatbot on your OpenCart store in the next few minutes, without creating an account first:

1. Download the extension - grab conferbot.ocmod.zip from the GitHub releases page
2. Install it - Extensions > Installer to upload, then Extensions > Extensions > Modules to install Conferbot
3. Try the demo bot - on the configure screen, click "Try our demo bot", flip the switch, and save. The widget is now live on your storefront with a working AI bot
4. Create your own bot - sign up free at app.conferbot.com, build a flow in the visual builder or start from an e-commerce template, and publish it
5. Swap in your Bot ID - copy it from Share > Embed into website, paste it into the extension, save, and your bot is answering customers

From there, iterate from the dashboard: refine flows, connect AI answers, set up your team in the shared inbox, and watch conversations in analytics. The extension itself is free and the widget is included in all plans, including the free tier - see pricing for details.

Resources:

• Extension source code on GitHub (GPL-3.0)
• Developer portal: OpenCart integration guide
• Guide: chatbots for e-commerce
• Guide: how to add a chatbot to any website
• Also on your stack? See the PrestaShop, Magento, WordPress, and Shopify integrations