Description

Carfitly adds an AI-powered parts assistant to your WooCommerce store. Shoppers describe their vehicle in plain language – “engine oil for a BMW 320d 2016” – or enter an OE part number, and receive product recommendations drawn exclusively from your own catalog, with your best sellers first.

Why parts stores choose Carfitly

Grounded in your catalog. The assistant can only recommend products that exist and are in stock in your store. It never invents products, prices or availability.
OE-number exact matching. When a shopper enters a part number, Carfitly matches it against your product titles and SKUs deterministically, with normalization (“06L 115 562 B” matches “06L115562B”). Part-number questions are answered by exact matching – never by AI guessing.
Careful fitment language. When compatibility cannot be verified from your product data, the assistant says so and advises the shopper to verify by OE number, instead of overstating certainty.
Best sellers first. When several products match, your store’s most purchased items are recommended first.
Your AI provider, your key. Connect OpenAI, Anthropic (Claude), Google Gemini, DeepSeek, xAI (Grok), Zhipu (GLM), Moonshot (Kimi), or any OpenAI-compatible endpoint. You pay your provider directly; API keys are stored encrypted in your database and are never routed through Carfitly’s servers.
Multilingual. Widget interface in English, Lithuanian, German, Polish, Russian and Latvian – and the assistant replies in whatever language the shopper writes.
Flexible placement. A floating assistant dock, a compact inline launcher via the [carfitly_chat] shortcode, or a fully embedded panel with [carfitly_chat mode="full"].
Add to cart from the chat. Shoppers add recommended products without leaving the conversation.
Widget customization. Assistant title, welcome message, input placeholder, dock position and full widget colors.

Conversation insight

Every conversation is stored locally in your own WordPress database – nothing is sent to Carfitly. The Conversations screen shows the full history and statistics, chat-assisted revenue (order value that followed a chat interaction in the last 30 days) and the lost-demand report – every question that found no matching product, grouped and counted, so you know what to stock next.

Free — everything in this plugin, no limits

Unlimited storefront conversations
Seven AI providers plus a custom endpoint — bring your own key
Natural-language product search and careful fitment guidance
Exact OE/OEM part-number matching
Add to cart directly from the chat
Chat-assisted revenue tracking and the lost-demand report
Complete conversation history and statistics
Full widget customization and six interface languages

Everything above is fully functional in this free plugin — no locked features, no usage caps, no time limits.

Carfitly Pro — a separate product from carfitly.com

Carfitly Pro is a separately distributed version for stores that want zero setup:

Managed Carfitly AI — the assistant runs on Carfitly’s own AI service: no API key, no provider account, nothing to configure (early access rolling out)
Fair-use conversations included — no separate AI provider bill
Priority email support with replies within six working hours
Seven-day free trial

Pro is sold and delivered from carfitly.com; it is not required for anything this plugin does.

External Services

Carfitly connects to a third-party AI service to generate assistant replies. No data is transmitted anywhere until a site administrator selects a provider and enters their own API key.

For each chat message, the following data is sent to the AI provider selected by the administrator: the shopper’s message, recent messages of the same conversation, the store name, and short summaries (title, SKU, short description, price, categories, attributes, units sold) of up to 12 matching in-stock products. No customer accounts, order data or other personal data is transmitted.

Depending on the administrator’s configuration, requests are sent to exactly one of the following services, under that service’s terms:

OpenAI – Terms of Use, Privacy Policy
Anthropic (Claude) – Commercial Terms, Privacy Policy
Google Gemini API – Terms of Service, Privacy Policy
DeepSeek – Open Platform Terms of Service, Privacy Policy
xAI (Grok) – Terms of Service, Privacy Policy
Zhipu AI / Z.ai (GLM) – Terms of Service, Privacy Policy
Moonshot AI (Kimi) – Open Platform Terms of Service, Privacy Policy
Or a custom OpenAI-compatible endpoint explicitly configured by the administrator (under the terms of whatever service the administrator points it at).

This plugin does not connect to carfitly.com, Freemius, or any Carfitly server. The only external requests it makes are the AI requests described above, to the single provider chosen by the administrator.

The plugin sets one first-party cookie, cfy_assist (7-day lifetime), in the shopper’s browser when they click a recommended product in the chat. It is used only to attribute later orders to the assistant in the store’s own dashboard. It contains no personal data and is never sent to any external service.

Screenshots

The assistant answering a vehicle fitment question with products from your catalog.

An OE part number answered with an exact, verified catalog match. — The assistant answering a vehicle fitment question with products from your catalog.

Installation

Install and activate the plugin (WooCommerce is required).
Open Carfitly in the admin menu.
Select your AI provider and paste your API key (stored encrypted).
Use the built-in Test AI connection to verify the setup.
Enable the floating assistant, or place [carfitly_chat] on any page.

FAQ

Which AI provider should I choose?: Any supported provider works. Fast, low-cost models (for example Gemini Flash-class or DeepSeek) are typically sufficient for product recommendations and respond in a few seconds.
Is customer data sent anywhere?: Conversations are stored only in your own WordPress database. Per request, only the shopper’s message and limited product data are sent to the AI provider you configured – see the External Services section for the full disclosure.
Does the assistant invent products?: No. It is restricted to products retrieved from your catalog for each question. If nothing matches, it says so. Part-number lookups are answered by exact matching, not by the AI.
Does it work in my language?: The widget ships in six languages (auto-detected from your site language or set manually), and the assistant replies in the language the shopper uses.

Reviews

There are no reviews for this plugin.

Contributors & Developers

“Carfitly – AI Auto Parts Fitment Assistant” is open source software. The following people have contributed to this plugin.

carfitly

Translate “Carfitly – AI Auto Parts Fitment Assistant” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.

Changelog

0.6.2

All SVG icon output in the admin screen now passes through wp_kses with a strict allowlist; transient keys use the full carfitly_ prefix; WooCommerce dependency declared via the Requires Plugins header.

0.6.1

Hardened output escaping in the admin screen; documented the first-party cfy_assist attribution cookie in the readme.

0.6.0

All functionality is now free and fully unlocked in the WordPress.org distribution: add to cart from the chat, full conversation history and statistics, chat-assisted revenue, lost-demand report, and complete widget customization. No feature limits, no upgrade prompts.
All licensing/SDK code removed from the WordPress.org build (it now lives only in the separate Pro distribution on carfitly.com).
External services disclosure expanded: named Terms of Service and Privacy Policy links for every supported AI provider.
Uninstall cleanup via uninstall.php (options + local conversation table).

0.5.3

Pro: widget customization – assistant title, welcome message, input placeholder, floating dock position (left/right), full widget colors (background, messages area, text, customer bubble).
Design: theme-isolation layer so the widget looks identical in any theme; compact add-to-cart pill; composer alignment fixes.

0.5.0

Pro: Add to cart directly from the chat (simple products, WooCommerce AJAX).
Pro: Chat-assisted revenue – orders placed after a chat interaction are attributed and summed on the Conversations screen.
Pro: Lost-demand report – questions that matched no product, grouped by frequency.
Free: lost-demand counter teaser on the Conversations screen.

0.4.11

WordPress.org build now ships without any bundled licensing SDK – the free plugin makes no calls to Carfitly or Freemius.
Coding-standards pass: prepared identifier placeholders, stricter input sanitization, no heredoc.
Requires WordPress 6.2 or newer.

0.4.6

Plugin renamed to “Carfitly”.
Attribution link in the widget is now opt-in and disabled by default.
Documentation: external services disclosure, expanded FAQ, professional description.
Compatibility: tested up to WordPress 7.0.

0.4.x

Introduced the separately distributed Pro build (sold and delivered from carfitly.com, outside WordPress.org).
Conversations screen: locally-stored chat log with statistics.
OE-number exact matching with normalization; verified-match badges.
Provider-level JSON output mode and robust reply parsing.
Compact launcher, single brand mark, tightened widget UX; official logo across widget and admin.

0.3.0

Rebuilt storefront UX: assistant dock, dropdown, mobile bottom sheet, redesigned admin.

0.1.0

First release: grounded chat endpoint, 8 AI providers + custom, floating and inline widgets, popularity-sorted product cards, per-IP rate limiting, encrypted key storage.