{"uid":"cap_Oc49l64xSWl3_JOKlGZfo","slug":"synapse-api-nft-metadata-lookup-36026fd4","name":"Synapse API — NFT Metadata Lookup","description":"High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.","url":"https://synapse-api-brown.vercel.app/api/abstract/nft/metadata?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"tokenId":{"type":"string"},"contractAddress":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_buc6i5rmOjtGWufpHmcxw","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Retrieves metadata for a specific NFT given its contract address and token ID across blockchain networks","exampleAgentPrompt":"Can you pull the metadata for NFT token ID 1234 from contract address 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D — I want to see its traits and image.","exampleUseCases":[{"title":"NFT trait lookup for rarity analysis","prompt":"Fetch the metadata for token ID 8888 from the Azuki contract at 0xED5AF388653567Af2F388E6224dC7C4b3241C544 — I want to see all its attributes and rarity traits."},{"title":"NFT display info for marketplace listing","prompt":"I need the name, description, and image URL for token ID 42 from contract 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D so I can display it on our gallery page."},{"title":"Verify NFT authenticity and properties","prompt":"Can you look up the on-chain metadata for token ID 5001 at contract 0x49cF6f5d44E70224e2E23fDcdd2C053F30aDA28B to confirm what collection it belongs to and what its listed attributes are?"}],"resultDescription":"Returns structured NFT metadata including token name, description, image URI, external URL, and an array of trait attributes (trait_type, value pairs) as stored in or referenced by the smart contract.","failureModes":["Invalid or non-existent contract address returns an error or empty response","Token ID not found or not yet minted returns a 404 or null metadata","Metadata hosted on unreachable IPFS/arweave gateway causes timeout","Contract is not an ERC-721/ERC-1155 standard and lacks a tokenURI function","Network not supported among the 57+ chains returns an unsupported network error","Payment not included or insufficient USDC causes 402 payment required response"],"whenToPreferThis":"Choose this endpoint when you need rapid NFT metadata retrieval across a wide range of blockchains (57+) at a low per-call cost of $0.01 USDC via x402 micropayment. Ideal for agents that need on-demand NFT data without maintaining their own indexer or RPC infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-17T06:46:22.489Z","isFirstParty":false,"canonicalSlug":"synapse-api-nft-metadata-lookup-36026fd4"}