{"uid":"cap_P2dm584RFIJ_OgysXoTqv","slug":"signalharness-nft-royalty-calculator-15557907","name":"SignalHarness NFT Royalty Calculator","description":"Explore 330 pay-per-call x402 API services and 27 agent-native digital products, with Base USDC pricing, secure Polar checkout, and free discovery.","url":"https://signalharness.ai/api/agent/services/nft_royalty_calculate/invoke","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"nft_royalty_request":{"type":"string","maxLength":65536,"minLength":2}}},"responseSchema":{"type":"json","example":{"replay":false,"result":{"warnings":["Royalty configuration and enforceability are not independently verified."],"service_id":"nft_royalty_calculate","evidence_scope":"caller_supplied_data","nft_royalty_calculation":"{\"basis_points\":500,\"royalty_atomic\":\"500\",\"sale_atomic\":\"10000\",\"seller_proceeds_before_fees_atomic\":\"9500\"}"},"status":"succeeded","receipt":{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","usage":[],"status":"succeeded","network":"eip155:8453","artifacts":[],"endedAtMs":0,"latencyMs":0,"paymentId":"example-payment","receiptId":"example-receipt","requestId":"example-request","serviceId":"nft_royalty_calculate","executionId":"example-execution","startedAtMs":0,"amountAtomic":"5000","resultSha256":"dd59eb1aae7d7cf86a56c6302bf1876a304fe43ca30791e9be7203989721fb42","serviceVersion":"1.0.0","settlementReference":"0x0000000000000000000000000000000000000000000000000000000000000000"},"artifacts":[],"requestId":"example-request","executionId":"example-execution"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_7c9Pp4vkPmhYb70AibKBH","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calculates NFT royalty amounts based on caller-supplied NFT transaction or sale data","exampleAgentPrompt":"Calculate the NFT royalty for a secondary sale of 2.5 ETH with a 10% royalty rate on token #4821 from the CryptoPunks collection — I need to know exactly how much the creator should receive.","exampleUseCases":[{"title":"Secondary market royalty payout verification","prompt":"I just sold an NFT from the Azuki collection for 3.8 ETH on a secondary marketplace. The creator royalty is set at 7.5%. Can you calculate the exact royalty amount the original creator should receive from this transaction?"},{"title":"NFT marketplace royalty compliance check","prompt":"We're building an NFT marketplace and need to verify royalty calculations. For a sale of 500 USDC on token #1023 with a 5% royalty rate, what is the royalty amount owed to the creator?"},{"title":"Creator earnings estimation from NFT resale","prompt":"As an NFT creator I set a 10% royalty on my collection. Someone just resold one of my pieces for 1.2 ETH — use the royalty calculator to tell me exactly how much I should be receiving."}],"resultDescription":"Returns a JSON object containing the computed NFT royalty calculation result, any warnings about the input data, an evidence scope indicator (caller_supplied_data), the service ID, and a full receipt with payment details, execution metadata, and a SHA256 result hash for verification.","failureModes":["Invalid or malformed nft_royalty_request string returns an error","Request string below minimum length (2 chars) rejected with validation error","Missing required nft_royalty_request field returns 400-level error","Ambiguous or incomplete royalty data may return warnings in the result","Payment failure via x402 protocol results in 402 response before execution"],"whenToPreferThis":"Choose this endpoint when you need a fast, per-call computation of NFT royalty amounts based on caller-supplied transaction data without requiring on-chain lookups. Ideal for marketplace builders, NFT creators, or agents reconciling royalty payouts who already have the relevant sale and royalty parameters available. At $0.005 USDC per call via x402, it suits high-frequency per-transaction checks.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T13:07:22.749Z","isFirstParty":false}