Is This Listing Legit?
Paste a link to a Facebook Marketplace, Craigslist, OfferUp, eBay or Mercari listing and get a written review of it: a 0–100 risk score and verdict, the red flags and green flags, the listed price next to an estimated market value, and the steps to take before you pay. You need to be signed in; a free account works.
Updated October 7, 2026
AI Marketplace Advisor
PremiumPaste any marketplace listing URL and our AI will analyze it for scam indicators, price manipulation, and fraud risk.
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What's in the review
| Part of the review | What it gives you |
|---|---|
| Risk score and verdict | A number from 0 to 100, a level from Low to Critical, and a verdict from "likely safe" to "definite scam", with a 2–3 sentence reason. |
| Price check | The listed price, an estimated market value and how far apart they are. The estimate comes from the AI, so confirm it against sold listings. |
| Red flags | Each problem it spotted, such as a deposit request or a vague history, with a severity and an explanation. |
| Green flags | Things that count in the listing's favor, like a detailed description or an included receipt. |
| Seller, description and photo notes | Short notes on each, based on the listing text. |
| Identifiers found | Any IMEI, VIN or serial number in the listing, ready to check for theft. |
| Recommended actions | What to ask the seller and do before you hand over money. |
When to use this page
- You want a second opinion in plain words, not just a score.
- You're not sure whether the price is a bargain or a warning sign.
- You want a list of questions to send the seller before you drive across town.
Getting the most from it
- It reads the listing's text, so look at the photos yourself too.
- Check the seller's profile age, ratings and past sales on the marketplace.
- Use the review to decide what to check next, and make the final call yourself.
- To search theft reports, check the serial number on the verify page.
Other ways to check a listing
- Facebook Marketplace scam checker: paste a link, no account needed. Gives a rule-based score and pulls out serial numbers with a Verify button.
- Scam checker: paste the listing text from any site. Runs in your browser.
- How to tell if a marketplace item is stolen: the checks to do yourself, step by step.
Questions people ask
How do I know if a marketplace listing is legit?
Check four things: the price against sold listings for the same model, how the seller wants to be paid, whether their story about the item holds together, and whether they'll give you the serial number before you meet. SafeOrStolen's listing review (safeorstolen.com/marketplace-advisor) reads the listing and writes up red flags, green flags and a price estimate, but the serial number check is what tells you if the item is reported stolen.
What does the AI listing review show?
A risk score from 0 to 100 with a level and a one-line verdict, a short summary, the listed price next to an estimated market value, a list of red flags with a severity for each, green flags, notes on the seller, the description and the photos as the listing describes them, recommended next steps, and any IMEI, VIN or serial number found in the listing.
Do I need an account to use it?
Yes. You need to be signed in to a SafeOrStolen account to paste a link here; a free account works. If you'd rather not sign in, the Facebook Marketplace scam checker at safeorstolen.com/marketplace-url-checker reads a listing link without an account, and the scam checker at safeorstolen.com/scam-checker works from pasted text.
How accurate is the price estimate?
Treat it as a rough guide. It's written by an AI model from the listing text, not pulled from a sales database, so it can be off for rare models, bundles or items in unusual condition. Before you decide a price is too good to be true, search sold listings for the same model and condition on eBay or the marketplace itself.
Can it tell me if the item is stolen?
It points out signs that often go with stolen goods, like a seller who won't share the serial number, and it lists any number it finds in the listing. To check that number against theft reports, enter it on SafeOrStolen's verify page, which searches its theft reports and public web results and lists every source.
Which listing links can I paste?
Links to single listings on Facebook Marketplace, Craigslist, OfferUp, eBay and Mercari work best. If a listing only shows its details to logged-in users, as some Facebook listings do, the review has much less to go on. In that case, copy the listing text into the scam checker instead.