{"uid":"cap_PkGXQJxDkjhnx1Rc92yu6","slug":"hermes-x402-nft-metadata-lookup-de722d6f","name":"Hermes x402 NFT Metadata Lookup","description":"Pay-per-call data API for AI agents. No API key, no account, no signup — pay USDC on Base (eip155:8453) per request; free /api/meta lists all 24 endpoints. One call each: web page to LLM-ready text and link previews; China A-share quotes and limit-up pool; Chinese text and pinyin; Base/Ethereum on-chain reads (address, token, ERC-20 balances, tx, blocks, transfer history, gas price in USD); NFT records (collection, owner, and ipfs:// tokenURI resolved through public gateways); full-page screenshots; email verification without sending mail; ENS forward/reverse resolution; smart-contract due diligence (ABI, verified source, proxy); token security facts (owner, renounced ownership, paused, bytecode capability selectors); domain dossier (RDAP, DNS, TLS certificate, HTTP facts, hosting network); a one-call rule-based contract verdict (published-weights exposure score, owner/pause/proxy/capability facts, every reason with evidence); and an ERC-20 allowance risk check that returns the live allowance matrix for one wallet across up to 10 spenders (unlimited flags, contract/EOA status, exact revoke calls) with a single verdict.","url":"https://api.zlovev.com/api/chain/nft/metadata?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":["contract","token_id"],"properties":{"chain":{"enum":["base","eth"],"type":"string","description":"base = Base mainnet (eip155:8453), eth = Ethereum mainnet (eip155:1). Default base"},"contract":{"type":"string","description":"NFT contract address (0x + 40 hex) on the chosen chain"},"token_id":{"type":"string","description":"Token ID as a decimal integer or 0x hex string"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"ok":true,"chain":"base","token":{"owner":"0x…","exists":true,"uri_kind":"ipfs","token_uri":"ipfs://bafybei…/1","owner_is_contract":false},"network":"eip155:8453","contract":"0x400b77f2ecb501fb00e7240e37f9f286cb13cabf","metadata":{"ok":true,"meta":{"name":"Sphinx #1","image":"ipfs://bafy…","image_http":"https://gateway.pinata.cloud/ipfs/bafy…","attributes_total":7},"sha256":"9f2c…","source_gateway":"gateway.pinata.cloud"},"token_id":"1","collection":{"name":"ReformistSphinx","symbol":"SPHINX","standard":"erc721","total_supply_raw":"564688"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_fGeRwfkEogCsJTEamMLRX","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches full NFT token metadata, owner, collection info, and resolves ipfs:// tokenURIs for a given contract+token on Base or Ethereum mainnet, paid per-call with USDC via x402.","exampleAgentPrompt":"Look up the full metadata for token ID 1 of the NFT contract 0x400b77f2ecb501fb00e7240e37f9f286cb13cabf on Base mainnet — I want the owner, the image URL, collection name, and any attributes.","exampleUseCases":[{"title":"NFT portfolio display enrichment","prompt":"I have a list of NFTs a wallet holds on Base — can you fetch the name, image, and collection info for token ID 42 of contract 0xabc123...def456 so I can display it nicely?"},{"title":"IPFS image resolution for NFT marketplace","prompt":"The NFT at contract 0x400b77f2ecb501fb00e7240e37f9f286cb13cabf token 7 on Base has an ipfs:// image URL — can you get me the public HTTP gateway URL for the image so I can embed it?"},{"title":"NFT ownership verification","prompt":"Can you check who currently owns token ID 99 of the ERC-721 contract 0xdeadbeef...1234 on Ethereum mainnet, and confirm whether that owner is a contract or a regular wallet?"}],"resultDescription":"Returns a JSON object with: token owner address, existence flag, URI kind (e.g. ipfs), raw token URI, whether owner is a contract; resolved metadata including NFT name, image (ipfs:// and HTTP gateway URL), total attribute count, metadata SHA-256 hash, and source IPFS gateway used; plus collection name, symbol, token standard (erc721/erc1155), and raw total supply.","failureModes":["Invalid contract address format returns error","Token ID does not exist on chain returns exists:false","IPFS gateway timeout causes metadata.ok:false","Unsupported chain value returns validation error","Payment not received causes 402 response before data is returned","Contract is not an NFT contract returns schema mismatch or empty collection fields"],"whenToPreferThis":"Use this endpoint when you need a single, unified response combining on-chain NFT token data (owner, URI) with off-chain IPFS metadata resolution (name, image, attributes) and collection-level facts, without setting up an API key or account — paying $0.02 USDC per call via x402 on Base. Prefer this over manual on-chain reads + separate IPFS fetches when you want one call that handles both layers and resolves ipfs:// URIs through public HTTP gateways automatically.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T03:23:25.839Z","isFirstParty":false,"canonicalSlug":"hermes-x402-nft-metadata-lookup-de722d6f"}