{"uid":"cap_tH1TZxWyGQJbnJvZhzgh9","slug":"nft-collections-portfolio-lookup-d6c5ed2a","name":"NFT Collections Portfolio Lookup","description":"Pay-per-request access to CoinGecko, DefiLlama, Alchemy, and Etherscan APIs. No auth, no subscriptions.","url":"https://stablecrypto.dev/api/alchemy/portfolio/nft-collections","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"network":{"type":"string","description":"Alchemy network slug, e.g. eth-mainnet, base-mainnet"},"addresses":{"type":"array","items":{"type":"string"},"description":"Wallet addresses"},"withMetadata":{"type":"boolean"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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_ZFg9G5t7GGlpco8uE8EIl","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 the NFT collections held across one or more wallet addresses on a specified blockchain network","exampleAgentPrompt":"What NFT collections are held in the wallet 0xAbc123...def456 on eth-mainnet? Include metadata about each collection.","exampleUseCases":null,"resultDescription":"Returns an object keyed by wallet address or collection identifier, containing the NFT collections held in the specified wallets, with optional metadata such as collection names, images, and descriptions depending on the withMetadata flag.","failureModes":["Invalid or unsupported network slug returns an error","Malformed or non-existent wallet address returns empty or error response","Missing required fields (network or addresses) returns a validation error","Rate limiting or payment failure returns a 402 or 429 status","Network congestion may delay Alchemy response"],"whenToPreferThis":"Use this endpoint when you need to retrieve NFT holdings grouped by collection for one or more wallet addresses on a specific EVM-compatible network. Prefer this over the sibling NFT balances endpoint when you want collection-level aggregation rather than individual token-level detail. Best suited for portfolio dashboards, NFT analytics, or when you need to understand what collections a user participates in.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:35:14.417Z","isFirstParty":false}