{"uid":"cap_fL6_niCcM2mnVP86CaSXM","slug":"basebuilder-ecommerce-sales-tax-calculator-139a2673","name":"BaseBuilder Ecommerce Sales Tax Calculator","description":"BaseBuilder Ecommerce API hub - 19 paid endpoints","url":"https://bb-ecommerce-three.vercel.app/api/sales-tax-calculator","method":"POST","headers":{},"bodySchema":null,"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.115412","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":"$0.115412/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.115412","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.115412","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_NOJh0xjsTHOljzdf28MmZ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.115412","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calculates sales tax for ecommerce transactions based on location and order details","exampleAgentPrompt":"What's the sales tax on a $149.99 order being shipped to Austin, Texas 78701 — it's a general merchandise product and I need the exact dollar amount and rate to display at checkout.","exampleUseCases":null,"resultDescription":"Returns the applicable sales tax rate and dollar amount for the given order, including jurisdiction-level breakdown and the final total with tax applied.","failureModes":["Invalid or unrecognized zip code returns an error","Missing required fields such as amount or location cause a 400 bad request","Unsupported jurisdiction or territory may return null tax data","Payment failure via x402 protocol results in 402 Payment Required","Malformed request body returns validation error"],"whenToPreferThis":"Use this endpoint when you need real-time sales tax calculation for US ecommerce transactions at checkout, especially when you need per-jurisdiction accuracy and are already operating within the BaseBuilder Ecommerce API ecosystem using x402 micropayments.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:46:56.432Z","isFirstParty":false}