{"uid":"cap_Y_fd6yU8o3mM6MJyn09FN","slug":"collectablespulse-compare-endpoint-98b271f0","name":"CollectablesPulse Compare Endpoint","description":"Global collectibles market intelligence API. AI-synthesized valuations for sports cards, coins, comics, vinyl records, Pokémon/MTG/TCGs, sneakers, watches, signed memorabilia, and trading cards. Real-time sold comparables, PSA/CGC/PCGS grade premiums, population reports, storage and grading guidance. Amazon storage supplies, professional grading service links, and eBay/Goldin marketplace links included. All endpoints support any language via ?lang=. Pricing: $0.08–$0.20 USDC/call via x402 micropayment.","url":"https://collectablespulse.vercel.app/api/collect/compare","method":"GET","headers":{},"bodySchema":{"type":"object","required":["item1","item2"],"properties":{"lang":{"type":"string","description":"lang"},"item1":{"type":"string","description":"item1"},"item2":{"type":"string","description":"item2"}}},"responseSchema":{"type":"json","example":{}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.1","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.1/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.1","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_IjOhGryva5kvN340o7242","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.1","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Scores and compares two collectibles across 8 investment categories and declares a definitive winner for collector and investor decision-making.","exampleAgentPrompt":"Compare a 1952 Topps Mickey Mantle PSA 5 against a 1986 Fleer Michael Jordan PSA 8 across all 8 investment categories and tell me which one is the better buy right now.","exampleUseCases":null,"resultDescription":"Returns scores for both collectibles across 8 investment categories (e.g. liquidity, population scarcity, trend, condition premium, etc.) along with a definitive named winner and rationale for which collectible represents the stronger investment.","failureModes":["Unrecognizable or ambiguous collectible names may return an error or low-confidence scores","Missing required item parameters result in a 400-level error","Very obscure or niche items may produce incomplete category scores","Service unavailability returns 5xx with no comparison data"],"whenToPreferThis":"Use this endpoint when a user needs a decisive side-by-side investment comparison between exactly two collectibles across multiple scored dimensions — not just a single value lookup or trend signal. Ideal when the user is trying to decide which of two items to purchase or hold.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:41:22.147Z","isFirstParty":false}