{"uid":"cap_o8v9WwTVAE_R1l4EtaOAM","slug":"synapse-api-nft-metadata-lookup-fdb825b4","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/bob/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_Cr1uwUkiMUuPATUf5-U9F","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":"Fetches on-chain NFT metadata for a given contract address and token ID across 57+ blockchain networks","exampleAgentPrompt":"Can you look up the metadata for NFT token ID 42 on contract address 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D — I want to see its name, image, and traits.","exampleUseCases":[{"title":"Verify NFT traits before purchase","prompt":"Before I buy this NFT, can you pull the metadata for token ID 7804 on contract 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D so I can check its traits and rarity attributes?"},{"title":"Display NFT details in a portfolio app","prompt":"Show me the full metadata for token ID 1001 at contract address 0x60E4d786628Fea6478F785A6d7e704777c86a7c6 — I need the name, image URL, and all attributes to display in my gallery."},{"title":"Audit NFT collection properties","prompt":"I'm building a report on this NFT project — can you fetch the metadata for token ID 500 from contract 0x8a90CAb2b38dba80c64b7734e58Ee1dB38B8992e so I can record its on-chain properties?"}],"resultDescription":"Returns structured NFT metadata including token name, description, image URL, external URL, animation URL, and an array of trait attributes (trait_type and value pairs) as stored on-chain or on the token's metadata URI for the specified contract and token ID.","failureModes":["Invalid or non-existent contract address returns an error or empty response","Token ID does not exist on the given contract — returns not found or null metadata","Contract address is not an NFT contract (e.g. ERC-20) — returns schema mismatch error","Network/chain not supported among the 57+ supported networks — returns unsupported chain error","Metadata URI is off-chain and unreachable (IPFS gateway timeout, dead URL) — returns fetch failure","Malformed input (missing contractAddress or tokenId) — returns validation error"],"whenToPreferThis":"Choose this endpoint when you need to programmatically retrieve NFT token metadata (name, image, attributes) given a specific contract address and token ID, especially across a broad range of EVM-compatible and non-EVM blockchains. Prefer it over general blockchain explorers when you want structured JSON metadata optimized for agent consumption, and when pay-per-call pricing ($0.01 USDC) via x402 is suitable for your use case.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T12:41:37.072Z","isFirstParty":false,"canonicalSlug":"synapse-api-nft-metadata-lookup-36026fd4"}