Stop Overpaying.
Get the Real Deal.
Clavizio scans listings, analyzes photos and descriptions, detects hidden issues, and tells you the fair price, the max bid, and the exact arguments to negotiate down — so you save real money on every purchase.
Caution on Auction. Ongoing eBay auction for an iPhone 15 128GB that is network locked and has a cracked back glass. Walk-away limit around $220.
Max recommended bid
$220
Market value
$420
Works on marketplaces around the world
A must-have for every second-hand buyer
Clavizio turns marketplace guessing into data-backed decisions.
Save money on every deal
AI recommends the target price and max bid so you never overpay.
Know what you are really buying
Condition analysis and photo review uncover scratches, damage, missing parts and hidden defects.
Negotiate with confidence
Get ready-to-use arguments and a message to send to the seller.
Compare 2-3 listings instantly
Side-by-side AI analysis picks the best deal for you.
Shop across language barriers
Analyze foreign listings and get results in your language, with a local-language seller message.
Auctions made simple
Max recommended bid plus bidding strategy to avoid emotional bidding wars.
Uncover Hidden Risks & Real Costs
Clavizio reads every listing detail and image, then surfaces the red flags and real expenses you might otherwise miss.
- Pros & cons extracted automatically from the listing
- Seller risk assessment (new account, no returns, zero feedback)
- Hidden cost breakdown: shipping, repairs, unlock fees
- Clear condition and item-health verdicts
Auction Max Bid & Automated Negotiation
Never overpay in a bidding war. Clavizio recommends a smart max bid and a walk-away limit based on real repair and unlock costs.
- Max recommended bid calculated from hidden costs
- Walk-away limit so you know when to stop
- Auction bidding strategy with exact timing advice
- One-click negotiation leverage for the seller
Compare Listings & Pick the Best Deal
Analyze 2 or 3 similar listings side by side. Clavizio builds a comparison table and clearly tells you which item is the best value.
- Side-by-side price, condition and hidden cost comparison
- Best deal badge with a plain-language reason
- Pros and cons for every item at a glance
- PDF export for serious buying decisions
Works Globally & Translates Automatically
Shop on foreign marketplaces without speaking the language. Clavizio reads the original text and returns the full analysis in your chosen language.
- 20+ report languages to choose from
- Analyzes listings regardless of the original language
- Seller message generated in the seller’s local language
- Recommended offer and market value in your currency
Original German listing
Clavizio analysis in English
From listing to verdict in seconds
No copy-paste, no spreadsheets, no guesswork.
Open the listing
Go to any marketplace or auction page. Clavizio works on local and global sites.
Click the Clavizio icon
The side panel opens and extracts the title, price, description, and images.
Get the verdict
In seconds, receive the score, market value, hidden costs, and a negotiation message.
Negotiate or compare
Use the generated message, PDF report, or compare multiple listings to pick the winner.
Start free, pay only for what you need
Try Clavizio with 5 free credits. Upgrade when you are ready.
Free
Get started with 5 free credits on first install.
- 5 free analysis credits
- All features included
- No credit card required
Credits & Subscriptions
Coming soon. Buy credit packs or subscribe for power users.
- Affordable credit packs
- Monthly plans for heavy buyers
- Secure payments via Lemon Squeezy
Frequently asked questions
Everything you need to know before installing.
What does Clavizio do?
Clavizio is a Chrome extension that analyzes marketplace and auction listings with AI. It gives you a deal score, fair market value, hidden costs, seller risk, and a ready-to-send message to negotiate a better price.
Is my data safe?
We only process the page you actively choose to analyze. The data is sent securely to our server for the AI analysis and is not sold or shared with third parties. See our Privacy Policy for full details.
Which marketplaces are supported?
Clavizio works on any website because it reads the text and images of the page you are viewing. It is tested on eBay, Kleinanzeigen, KupujemProdajem, Limundo, OLX, Mobile.de, Willhaben and similar platforms.
Can I use it in my language?
Yes. Clavizio supports 20+ output languages and can generate seller messages in the seller's local language.
How do credits work?
Each listing analysis uses one credit. New users get 5 free credits. When those run out, you can buy more.
Stop guessing. Start saving.
Join thousands of smart buyers who use Clavizio to find hidden flaws, fair prices, and better deals.
Get it on Chrome Web Store