{"uid":"cap_blDAeGrXgHOywwjK1vkkP","slug":"synapse-api-optimism-nft-metadata-lookup-207e3e43","name":"Synapse API — Optimism 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/optimism/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_75cL--wQnutY9ueYaKygR","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 on the Optimism blockchain network","exampleAgentPrompt":"Can you fetch the metadata for token ID 1234 from the NFT contract at 0xAbCd...1234 on the Optimism network — I want to see its name, image, and traits?","exampleUseCases":[{"title":"NFT portfolio trait inspection","prompt":"I own token #42 from the contract 0x1234abcd...5678 on Optimism — can you pull its metadata so I can see what traits and rarity attributes it has?"},{"title":"NFT marketplace listing enrichment","prompt":"I'm listing an NFT on a marketplace and need the full metadata for token ID 99 at contract address 0xdeadbeef...cafe on Optimism, including the image URL and description."},{"title":"NFT authenticity and details check","prompt":"Someone is trying to sell me token 7777 from contract 0xfeedface...0001 on Optimism — can you retrieve its on-chain metadata so I can verify what it actually is before I buy?"}],"resultDescription":"Returns the NFT token's on-chain metadata including name, description, image URL, animation URL, external URL, and attributes/traits array as stored or referenced by the Optimism smart contract.","failureModes":["Invalid or non-existent contract address returns an error or empty response","Token ID does not exist on the contract returns a not-found error","Contract is not an NFT contract (ERC-721/ERC-1155) may return malformed or no metadata","Metadata hosted off-chain (e.g. IPFS timeout) may cause slow or failed retrieval","Rate limit exceeded or payment failure returns a 402 or 429 error"],"whenToPreferThis":"Use this endpoint when you specifically need NFT metadata from the Optimism (OP Mainnet) Layer 2 blockchain. Prefer this over Ethereum mainnet NFT lookups when the NFT was minted on Optimism to avoid incorrect chain queries. Suitable for per-token lookups at $0.01 per call via x402 micropayment.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T00:56:38.082Z","isFirstParty":false,"canonicalSlug":"synapse-api-optimism-nft-metadata-lookup-207e3e43"}