Know what anything is worth new, used, or resale, and get links to the best place to buy or sell it. Just name it or snap a photo.
Scored across 3 tools
compare_prices and price_item both return new, used, and resale prices for a single named item, so an agent can easily pick the wrong one. The name 'compare_prices' falsely implies multi-item comparison, and its description's discussion of estimate_low/estimate_high as -1 sentinel values adds further confusion rather than clarifying the boundary.
All three tools use snake_case and read naturally as actions, but the conventions vary: verb_noun for two, a bare verb for price_item, and a full phrase for where_to_buy_or_sell. The style is still readable and predictable enough.
Three tools is on the thin side for a valuation service, and the smallness is made worse by two of them overlapping. Fewer than a handful of capabilities are covered.
The surface covers pricing, comparison, and marketplace links, but lacks bulk or multi-item valuation, price history or trends, and any way to refine or correct a price. An agent can work around these gaps by calling the tools repeatedly, but it will hit them.
New, used, and resale prices for one named item. estimate_low and estimate_high carry a range already priced, or -1 when the title still needs a price.
Inputs: title (required), grade, category, condition, +2 more. Returns: best, name, view, comps, +18 more
Prices one item from a photo or a name. Returns what it is worth as a range, the new and used asking prices, resale, and a confidence.
Inputs: notes, title, condition, image_url, +2 more. Returns: best, name, view, comps, +18 more
Marketplace links to buy one named item new, buy it used, or sell it. Returns marketplace links for the item; these are the only URLs this tool provides. Links are Worth tracking links and may carry affiliate tags.
Inputs: title (required), place, intent, category. Returns: best, name, view, comps, +18 more
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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Find what anything is worth: resale value, used and new prices, and where to buy or sell it.
Appraise resale items from photos and write listings for eBay, Mercari, OfferUp and more.
Ask what a thrift find sells for. Real eBay sold comps, price range and net after fees.
Live second-hand price estimates with confidence for AI agents. Cached lookups free.
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