Getting started
Once installed, Untangle sits quietly in the background on ebay.com and amazon.com — it doesn't run anywhere else, and it doesn't do anything until you ask it to. You'll see two ways it shows up:
- The Untangle badge (the "FAB") — a small coral pill labeled "Untangle" that appears next to a seller's name on eBay listing, store, and feedback pages, and next to the seller info on Amazon product pages. Click it to fan out the actions available on that page (Analyze seller, Analyze buyer, Save seller, and so on).
- The popup — click the Untangle icon in your browser toolbar for keyword lists, Buyer Lookup, Recent Lookups, Settings, and Help, all split into eBay and Amazon tabs depending on which site you're on.
Everything below is organized by where you'll actually run into it.
eBay features
Analyze seller
Click the Untangle badge on a listing (/itm/), a store page (/str/), or a feedback profile (/fdbk/) and choose "Analyze seller." It pulls that seller's feedback history and gives you a plain-language read: tenure, positive percentage, what any negatives are actually about, and a risk level (LOW/MEDIUM/HIGH) — never a flat "safe" or "avoid." A carrier delay or an isolated one-off complaint is called out as exactly that, not held against the seller the same way a real pattern of misrepresentation would be.
Analyze buyer
Same badge, "Analyze buyer" — useful when you're the one selling and want a read on who you're shipping to before you commit. It reads the account's own feedback and tenure the same way, scoped specifically to risk posed by that buyer, not anything about the other side of a past transaction.
On Free, this gives a lighter "quick read" teaser rather than the full analysis.
Save seller
Bookmarks a seller directly from the badge so you can find them again later without re-searching — no analysis required, just a saved list.
Full Buyer History Scan
A deeper version of Analyze Buyer that scans a buyer's full "left for others" feedback history over a range you choose (a recent window, or all time), rather than just the sample visible on the first page. Useful for spotting a recurring pattern that a one-page snapshot would miss. Reports honestly on how much of the history it actually covered and why it stopped (range fully scanned, hit a safety limit, or you stopped it manually) — it never implies more coverage than it actually got through.
Bid History Heuristic Flag
On an auction's bid list, each bidder gets a small pill summarizing their score, positive percentage, and any bid retractions — a quick, no-AI signal (pure threshold checks, not a Claude call) to help you vet bidders on your own listings.
Hide & keyword filters
Set keywords in the popup's Keywords tab to hide matching search results outright, or highlight them instead so they stand out without disappearing. eBay and Amazon keep separate lists, and you can copy words from one platform's list to the other from the same tab.
Buyer Lookup (popup tab)
Look up a buyer by username directly from the popup — paste a single name or a list, and it processes them in sequence, reusing cached results instantly for anyone you've already looked up. Recent Lookups keeps a running list so you don't have to re-type a name you checked earlier.
Hide Sponsored sections
Hides sponsored/promoted carousels on listing pages so you're looking at organic content only, where those sections can be reliably identified.
Amazon features
Analyze seller
Same badge pattern as eBay — click "Untangle" next to the seller info on a product page for a plain-language read on that third-party seller's feedback and ratings.
Hide seller / Save seller
Hide a seller's listings from your search results, or save one to a list for later — both from the same badge, no analysis required first.
Review analysis
Click "Analyze reviews" on a product page for a structural read on the review sample: star-distribution skew, verified-purchase ratio, unusual timing (a burst of reviews landing in a short window), and language patterns that can indicate review manipulation or authenticity concerns — always framed as "this suggests" or "this is consistent with," never asserted as fact, since public review data can't be independently verified.
Seller & Fulfillment Facts
Where visible on the page, shows who the item actually ships from, who it's sold by, and whether it's Fulfilled by Amazon — useful context, since Amazon's A-to-z Guarantee applies differently depending on who's actually handling shipping.
Subscribe & Save default-selection note
Optional Settings toggle that flags when a listing's Subscribe & Save option is pre-checked to a recurring order by default, so it's not something you miss and accidentally sign up for.
Best Sellers Rank
Surfaces the item's actual Best Sellers Rank and category, where Amazon publishes one, as plain reference data.
Keyword hide/highlight & Hide Sponsored
Same keyword filtering pattern as eBay (separate list, managed from the Keywords tab), plus sponsored-carousel hiding on product pages.
Settings & the popup
Bring your own API key (BYOK)
A free toggle in Settings, available on every tier. Turning it on routes your analysis calls through your own Anthropic API key instead of ours — the cost lands on your key, not ours, which raises how many lookups you can run without waiting on a rate limit. It only raises your usage ceiling; it does not unlock any paid-tier feature you don't already have.
License key
Where you enter your license after subscribing to Pro Buyer or Pro Seller, to unlock the paid feature set on this install.
Feedback form
A direct line to flag anything that looked wrong, confusing, or missing — reachable from Settings, and from a link inside most result popovers.
Plans, trial & billing
Full tier breakdown and the feature comparison table live on the pricing section of the main site. Briefly:
- Free — hide/filter listings plus a couple of capped lookups a day.
- 7-Day Trial — the full Pro Seller feature set, rate-limited instead of unlimited, no card required, one-time per install.
- Pro Buyer — unlimited seller research on both platforms.
- Pro Seller — everything in Pro Buyer, plus unlimited Buyer Analysis and the Full Buyer History Scan on eBay.
Billed annually or semi-annually. You can cancel anytime — access continues through whatever you've already paid for, no immediate cutoff — but refunds only apply within the first 14 days of a purchase or renewal.
Upgrading or downgrading mid-term
Upgrading (Pro Buyer → Pro Seller) takes effect right away — you're charged a prorated amount for the rest of your current term and get the higher tier's access immediately. Downgrading (Pro Seller → Pro Buyer, or down to Free) takes effect at your next renewal instead — your current tier stays active until the term you already paid for runs out, with no partial refund or credit for the unused time, in keeping with the refund policy above.
Privacy & support
What Untangle reads and what happens to it afterward is covered in full in the Privacy Policy — the short version is that analysis data isn't kept once your result comes back, and keyword filtering never leaves your device.
Something not covered here, or not behaving the way this guide describes? Submit a request from the main site — there's no phone tree, and replies come from whoever actually wrote the code.