{"uid":"cap_omTwnksy83lDx22kgNt7l","slug":"friday-seller-tools-multi-channel-margin-parity-calculator-5ed12cf5","name":"Friday Seller Tools – Multi-Channel Margin Parity Calculator","description":"Instant, low-cost Amazon, Walmart, Shopify, and eBay listing, upload-preparation, advertising, and image-brief deliverables.","url":"https://friday-seller-tools-production.up.railway.app/v1/pricing/multi-channel-margin-parity","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"sku":{"type":"string","title":"Sku","maxLength":120,"minLength":1},"channels":{"type":"array","items":{"type":"object","title":"ChannelMarginInput","required":["channel","price","units_sold"],"properties":{"price":{"type":"number","title":"Price","maximum":1000000,"exclusiveMinimum":0},"channel":{"enum":["amazon_us","walmart_us","shopify","ebay_us"],"type":"string","title":"Marketplace"},"units_sold":{"type":"integer","title":"Units Sold","maximum":10000000,"minimum":1},"period_fixed_cost":{"type":"number","title":"Period Fixed Cost","default":0,"maximum":10000000,"minimum":0},"fixed_fee_per_unit":{"type":"number","title":"Fixed Fee Per Unit","default":0,"maximum":100000,"minimum":0},"percentage_fee_percent":{"type":"number","title":"Percentage Fee Percent","default":0,"maximum":60,"minimum":0},"shipping_cost_per_unit":{"type":"number","title":"Shipping Cost Per Unit","default":0,"maximum":100000,"minimum":0},"fulfillment_cost_per_unit":{"type":"number","title":"Fulfillment Cost Per Unit","default":0,"maximum":100000,"minimum":0},"other_variable_cost_per_unit":{"type":"number","title":"Other Variable Cost Per Unit","default":0,"maximum":100000,"minimum":0}},"description":"Seller-supplied observed price, volume, and cost stack for one channel.","additionalProperties":false},"title":"Channels","maxItems":4,"minItems":2},"product_name":{"type":"string","title":"Product Name","maxLength":200,"minLength":1},"baseline_channel":{"enum":["amazon_us","walmart_us","shopify","ebay_us"],"type":"string","title":"Marketplace"},"seller_price_floor":{"anyOf":[{"type":"number","maximum":1000000,"exclusiveMinimum":0},{"type":"null"}],"title":"Seller Price Floor","default":null},"product_cost_per_unit":{"type":"number","title":"Product Cost Per Unit","maximum":100000,"minimum":0},"minimum_advertised_price":{"anyOf":[{"type":"number","maximum":1000000,"exclusiveMinimum":0},{"type":"null"}],"title":"Minimum Advertised Price","default":null},"price_parity_tolerance_percent":{"type":"number","title":"Price Parity Tolerance Percent","default":1,"maximum":25,"minimum":0}}},"responseSchema":{"type":"json","example":{"job_id":"example","status":"queued"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.5","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":"$0.5/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Sh9sEl8Bl7auSluKtXRDm","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.5","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes and reconciles product pricing across Amazon, Walmart, Shopify, and eBay to ensure consistent profit margins and competitive parity.","exampleAgentPrompt":"Can you check the margin parity for my product that costs $12 to make — I'm selling it at $29.99 on Amazon, $28.50 on Walmart, $31 on Shopify, and $27.99 on eBay, and I want to know which channel is most profitable after fees?","exampleUseCases":[{"title":"Cross-marketplace margin audit for existing SKU","prompt":"I have a product I sell on Amazon, Walmart, and eBay — it costs me $8 to source and I price it at $24.99 everywhere. Can you run a margin parity check so I can see which platform actually puts more money in my pocket after their fees?"},{"title":"New product launch pricing strategy","prompt":"I'm about to launch a new item on Amazon and Shopify. My landed cost is $15 and I'm thinking $39.99 on Amazon and $42 on Shopify — can you calculate if my margins are balanced across both channels or if I need to adjust?"},{"title":"Repricing decision after fee change","prompt":"Walmart just changed their referral fee structure and I need to know if my current price of $34.99 still gives me a similar margin to what I'm making on eBay at $33.50 — my product cost is $11, can you run a multi-channel margin parity check?"}],"resultDescription":"Returns a job_id and queued status immediately, with the eventual result containing per-channel margin percentages, net profit figures after marketplace fees, and pricing recommendations to achieve parity across Amazon, Walmart, Shopify, and eBay.","failureModes":["Missing required pricing or cost inputs returns a validation error","Invalid or unsupported marketplace channel names may cause processing failures","Incomplete fee-structure data may result in inaccurate margin calculations","Async job may time out if the backend queue is overloaded — poll job_id for status","Network or payment failure at the x402 layer prevents job submission"],"whenToPreferThis":"Choose this endpoint when a seller needs to simultaneously compare net margins across multiple e-commerce marketplaces (Amazon, Walmart, Shopify, eBay) accounting for their distinct fee structures. It is especially valuable when repricing after a fee change, launching on a new channel, or auditing existing listings for profitability inconsistencies. Prefer it over manual spreadsheet approaches or single-platform margin tools when cross-channel parity is the primary concern.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:48:54.570Z","isFirstParty":false}