{"uid":"cap_xp2CRc_X0EV6BlbgyS7Y4","slug":"quantaflow-rapid-sales-tax-calculator-68d5a6fd","name":"QuantaFlow Rapid Sales Tax Calculator","description":"Every request, a quantum of value. x402 protocol-based payment endpoint for web3/DeFi tools.","url":"https://quanta-roan.vercel.app/api/service/rapid-sales-tax-calculator?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"body":{"type":"string","description":"Optional JSON body forwarded to POST requests."},"path":{"type":"string","description":"Path below the selected upstream origin."},"query":{"type":"object"},"method":{"enum":["GET","POST"],"type":"string"}}},"responseSchema":{"description":"The upstream response body and content type are passed through after successful payment."},"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_Zq1efB0zzpY6s3KHYK2Oz","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":"Calculates sales tax rates and amounts for given transactions via a pay-per-call x402 gateway, proxying requests to an upstream rapid sales tax API.","exampleAgentPrompt":"Can you calculate the sales tax on a $200 purchase being shipped to Austin, Texas? The item is a general merchandise product.","exampleUseCases":[{"title":"E-commerce checkout tax calculation","prompt":"I need to calculate the sales tax for a $349.99 electronics order being shipped to a customer at ZIP code 94105 in San Francisco, California — can you get me the exact tax amount and rate?"},{"title":"Small business invoice tax lookup","prompt":"I'm invoicing a client for $1,200 in consulting services delivered in New York state — what's the correct sales tax rate I should apply, if any?"},{"title":"Multi-state retail compliance check","prompt":"We're selling a $75 clothing item to a customer in Chicago, Illinois — what combined state and local sales tax rate applies so I can include the right amount at checkout?"}],"resultDescription":"Returns the upstream sales tax calculator's response, including the applicable tax rate, computed tax amount, and jurisdiction details for the queried transaction, passed through after a successful $0.01 USDC x402 micropayment.","failureModes":["Payment failure: insufficient USDC balance or invalid x402 payment header results in 402 Payment Required","Missing or malformed body/query parameters cause upstream validation errors","Unsupported location or ZIP code returns empty or error response from upstream","Network timeout proxying to upstream rapid sales tax API","Invalid JSON body format leads to parse errors","Upstream API outage results in gateway-level 502 or 503 response"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-call sales tax calculation without a subscription commitment, particularly in web3-native or agent-driven workflows that already support x402 micropayments. Ideal for low-volume or sporadic tax lookups where per-call $0.01 USDC pricing is more economical than a monthly SaaS plan.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T12:48:13.906Z","isFirstParty":false,"canonicalSlug":"quantaflow-rapid-sales-tax-calculator-68d5a6fd"}