{"uid":"cap__OXte9VfBnsA8rOKzNDwP","slug":"api-strale-io-a24ab401","name":"Strale Marketplace Fee Calculator","description":"Calculate seller fees for Amazon, eBay, Etsy, Shopify. Returns total fees, net revenue, fee breakdown.","url":"https://api.strale.io/x402/marketplace-fee-calculate","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":["marketplace","sale_price"],"properties":{"category":{"type":"string"},"sale_price":{"type":"number"},"marketplace":{"type":"string","description":"amazon/ebay/etsy/shopify"}}}},"additionalProperties":false}}},"responseSchema":null,"example":{"request":{"category":"electronics","sale_price":79.99,"marketplace":"amazon"},"response":{"fees":{"other_fees":null,"closing_fee":null,"listing_fee":null,"referral_fee":6.4,"transaction_fee":null,"payment_processing_fee":null},"_meta":{"payment":{"method":"x402","price_usd":0.054000000000000006,"settlement_id":"0x408384694fc44601a2eed66b866e6632774ad0bf64afc271f54f9041ee33daac"},"capability":"marketplace-fee-calculate","latency_ms":1,"provenance":{"source":"algorithmic","fetched_at":"2026-06-16T01:24:40.816Z"}},"category":"electronics","currency":"USD","sale_price":79.99,"total_fees":6.4,"fee_percent":8,"marketplace":"amazon","net_revenue":73.59,"breakdown_notes":["Referral fee: 8.0% of sale price","Professional seller plan ($39.99/month not included in per-item calculation)","FBA fulfillment fees not included (varies by size/weight)"]}},"exampleRequest":{"category":"electronics","sale_price":79.99,"marketplace":"amazon"},"tags":["x402"],"displayCostAmount":"0.054001","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":"$0.054001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.054","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.054","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_yQAXykTakJqeSH2GOHQvV","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.054","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calculates seller fees and net revenue breakdown for Amazon, eBay, Etsy, and Shopify given a sale price and optional product category.","exampleAgentPrompt":"What are the Amazon seller fees on a $79.99 electronics item — break down the total fees and what I'd actually net?","exampleUseCases":null,"resultDescription":"Returns total marketplace fees charged, net revenue the seller receives, and a detailed fee breakdown for the specified marketplace and sale price combination.","failureModes":["Missing required 'marketplace' or 'sale_price' query parameters returns 400 error","Invalid marketplace value (not amazon/ebay/etsy/shopify) returns error or unexpected result","Negative or zero sale_price may return error","Payment not included results in 402 Payment Required"],"whenToPreferThis":"Use this endpoint when you need fast, structured fee calculations for one of the four supported marketplaces (Amazon, eBay, Etsy, Shopify) and want a breakdown of net revenue vs fees. Prefer this over manual calculation or scraping marketplace help pages for consistent, programmatic results.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:57:14.667Z","isFirstParty":false}