{"id":"c1fe060b-bcb9-4fc7-a482-11f152a4c419","shortId":"YLxJds","kind":"x402","title":"Estimate NFT portfolio value for a wallet on Base via x402 micropayment.","tagline":"Estimate NFT portfolio value for a wallet on Base via x402 micropayment.","description":"This x402-enabled endpoint, hosted by Erudite Intelligence LLC at bridge.eruditepay.com, returns NFT valuation data for a given wallet address and NFT collection on the Base network. Callers POST a JSON body containing an `address` (wallet or contract address) and a `collection` (NFT collection address or slug), and receive a JSON response with valuation intelligence.\n\nPayment is required per-call via the x402 protocol (v2). The endpoint accepts 0.01 USDC on Base (eip155:8453) or 0.01 USDT on Tron (tron:728126428). Settlement is facilitated through the EruditePay Bridge, which supports 20 blockchains and uses Coinbase CDP as one of its facilitators. The provider is described as offering \"Crypto data intelligence.\"\n\nDocumentation is sparse — the crawled /docs path returns a 404, and the Bazaar schema embedded in the x402 challenge provides only a minimal example output (`{\"success\": true, \"data\": {}}`). The exact structure of the returned NFT valuation data is not documented beyond this stub. The endpoint is live and returns a well-formed 402 challenge on POST requests.","tags":[],"capabilities":["nft-valuation","wallet-portfolio","base-chain","x402-payment","crypto-data-intelligence","post-json-api"],"categories":["crypto","nft","data"],"synonyms":["NFT price estimate","NFT portfolio value","wallet NFT worth","NFT collection valuation","crypto wallet NFT data","Base NFT analytics"],"warnings":["No dedicated documentation available — /docs returns 404","Output schema is a stub; the actual shape of the 'data' field is undocumented","The example response from the Bazaar extension shows only {\"success\": true, \"data\": {}} with no real fields","It is unclear what valuation methodology or data sources are used"],"endpointUrl":"https://bridge.eruditepay.com/v1/base/wallet/nft-value","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x6961b88476a9b89C4ed97A4aF4D190754d5e70A1","amount":"5000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}]},"qualityScore":"0.450","qualityRationale":"The endpoint is live and returns a valid x402 challenge with a Bazaar schema, but documentation is effectively absent (all doc paths 404). The output example is a stub with an empty data object, so the actual response structure is unknown. Pricing is clear ($0.01 per 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'0.01':95,102 '20':117 '402':190 '404':146 '728126428':107 '8453':100 'Base NFT analytics' 'NFT collection valuation' 'NFT portfolio value' 'NFT price estimate' 'accept':94 'address':45,60,64,70 'base':9,21,51,98 'base-chain' 'bazaar':149 'beyond':177 'blockchain':118 'bodi':57 'bridg':114 'bridge.eruditepay.com':36 'call':86 'caller':53 'cdp':122 'challeng':155,191 'coinbas':121 'collect':48,67,69 'contain':58 'contract':63 'crawl':141 'crypto':134 'crypto wallet NFT data' 'crypto-data-intelligence' 'data':40,135,164,173 'describ':131 'document':137,176 'eip155':99 'embed':151 'enabl':28 'endpoint':29,93,181 'erudit':32 'eruditepay':113 'estim':1,13 'exact':166 'exampl':160 'facilit':110,127 'form':189 'given':43 'host':30 'intellig':33,80,136 'json':56,76 'live':183 'llc':34 'micropay':12,24 'minim':159 'network':52 'nft':2,14,38,47,68,171 'nft-valuation' 'offer':133 'one':124 'output':161 'path':143 'payment':81 'per':85 'per-cal':84 'portfolio':3,15 'post':54,193 'post-json-api' 'protocol':90 'provid':129,156 'receiv':74 'request':194 'requir':83 'respons':77 'return':37,144,170,185 'schema':150 'settlement':108 'slug':72 'spars':139 'structur':167 'stub':179 'success':162 'support':116 'tron':105,106 'true':163 'usdc':96 'usdt':103 'use':120 'v2':91 'valu':4,16 'valuat':39,79,172 'via':10,22,87 'wallet':7,19,44,61 'wallet NFT worth' 'wallet-portfolio' 'well':188 'well-form':187 'x402':11,23,27,89,154 'x402-enabled':26 'x402-payment'","prices":[{"id":"ac2580d1-a531-4d74-a292-6d8e5d968d39","listingId":"c1fe060b-bcb9-4fc7-a482-11f152a4c419","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":null,"chain":"base","payTo":"0x6961b88476a9b89C4ed97A4aF4D190754d5e70A1","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x6961b88476a9b89C4ed97A4aF4D190754d5e70A1","amount":"5000","scheme":"exact","network":"eip155:8453","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:37.151Z"}],"sources":[{"listingId":"c1fe060b-bcb9-4fc7-a482-11f152a4c419","source":"x402_bazaar","sourceId":"https://bridge.eruditepay.com/v1/base/wallet/nft-value","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:37.151Z","lastSeenAt":"2026-04-22T05:32:29.346Z"}],"details":{"listingId":"c1fe060b-bcb9-4fc7-a482-11f152a4c419","quickStartSnippet":"curl -X POST https://bridge.eruditepay.com/v1/base/wallet/nft-value \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_header>\" \\\n  -d '{\"address\": \"0xYourWalletAddress\", \"collection\": \"0xNFTCollectionAddress\"}'","exampleRequest":{"address":"0x0000000000000000000000000000000000000000","collection":"0x0000000000000000000000000000000000000000"},"exampleResponse":{"data":{},"success":true},"schema":null,"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint accepts 0.01 USDC on Base (amount 10000, 6 decimals) or 0.01 USDT on Tron","source_url":"https://bridge.eruditepay.com/v1/base/wallet/nft-value"},{"claim":"Provider is Erudite Intelligence LLC, described as 'Crypto data intelligence'","source_url":"https://bridge.eruditepay.com/v1/base/wallet/nft-value"},{"claim":"EruditePay Bridge supports 20 blockchains and is a FinCEN MSB registered entity","source_url":"https://bridge.eruditepay.com"},{"claim":"Settlement fee is 0.5% per successful settlement; verification is free","source_url":"https://bridge.eruditepay.com"}],"useCases":["Estimate the total value of NFTs held by a specific wallet in a given collection","Build portfolio dashboards that display NFT holdings value on Base","Automate NFT valuation checks before executing trades or offers","Agent-driven due diligence on wallet NFT exposure"],"bestFor":["Agents or apps needing on-demand NFT valuation for Base wallets","Crypto portfolio trackers that want per-collection value breakdowns","Automated trading bots that need NFT price intelligence"],"notFor":["Querying NFT data on chains other than Base (endpoint is Base-specific)","Free or high-volume bulk NFT data scraping (each call costs $0.01)","Detailed NFT metadata or image retrieval"],"kindDetails":{},"updatedAt":"2026-04-22T02:10:08.614Z"}}