{"uid":"cap_2euQ87VvAL3soew6WQdAC","slug":"shipping-logistics-calc-unit-price-comparator-a0c00c9b","name":"Shipping & Logistics Calc – Unit Price Comparator","description":"Compare package sizes by price per 100 g, 100 ml or per item across mixed units, ranked with savings.","url":"https://shipping-calc.x402tookit.com/unit-price?utm_source=zero.xyz","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"],"type":"string"},"queryParams":{"type":"object","required":["items"],"properties":{"items":{"type":"string","description":"JSON array of 2 to 20 objects like {\"name\":\"A\",\"price\":3.99,\"amount\":16,\"unit\":\"oz\"}; units g kg oz lb ml l floz pt qt gal ct m ft yd"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"asOf":{"type":["null","string"]},"ranked":{"type":["array","null"],"items":{"type":"object","properties":{"name":{"type":["null","string"]},"unit":{"type":["null","string"]},"price":{"type":["null","number"]},"amount":{"type":["null","number"]},"pricePerStandardUnit":{"type":["null","number"]}}}},"source":{"type":["null","string"]},"reasons":{"type":["array","null"],"items":{"type":"string"}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"bestName":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"worstName":{"type":["null","string"]},"disclaimer":{"type":["null","string"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}},"standardUnit":{"type":["null","string"]},"bestPricePerStandardUnit":{"type":["null","number"]},"savingsBestVsWorstPercent":{"type":["null","number"]}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_DkUUaIoDJuh1pbU0I-Fzj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Compares 2–20 products with mixed weight/volume/count units by normalizing to a common standard unit (per 100 g, 100 ml, or per item) and ranks them by price efficiency with savings percentages.","exampleAgentPrompt":"Compare these three peanut butter jars for me and tell me which is the best value: a 16 oz jar for $3.99, a 28 oz jar for $5.49, and a 40 oz jar for $7.19 — rank them by price per 100g and show me how much I save going with the cheapest option.","exampleUseCases":[{"title":"Grocery bulk-buy decision","prompt":"I'm buying olive oil and want to know which is best value: a 500 ml bottle for $6.99, a 1 liter bottle for $12.49, or a 3 liter tin for $31.99. Can you rank them by price per 100 ml and tell me the savings between the best and worst option?"},{"title":"Mixed-unit supplement comparison","prompt":"Help me figure out which protein powder is cheapest per 100g — I've got a 2 lb tub for $29.99, a 5 lb tub for $64.99, and a 1 kg bag for $27.50."},{"title":"Retail product pricing audit","prompt":"I'm stocking a store and need to compare five cleaning spray SKUs with different fill volumes and prices to figure out which gives customers the best value per 100 ml — here are the items: 250 ml at $2.49, 500 ml at $4.29, 750 ml at $5.99, 1 l at $7.49, and 2 l at $13.99."}],"resultDescription":"Returns a ranked array of all input items with their normalized price per standard unit, the best and worst value product names, the percentage savings between best and worst, a plain-language summary and verdict, optional reasons explaining the ranking, and a timestamp. May include a disclaimer and a list of items that could not be evaluated.","failureModes":["Fewer than 2 or more than 20 items provided — validation error","Unrecognized or unsupported unit string — item skipped or error returned","Missing required fields (name, price, amount, unit) in any item object — parsing failure","Malformed JSON in the items query parameter — 400 bad request","Incompatible unit types mixed without a bridging standard unit (e.g. weight vs volume) — items may be flagged as notChecked"],"whenToPreferThis":"Use this endpoint when you need to compare products that come in different package sizes or units and want a normalized, ranked view of cost efficiency. It is the right choice when quantities span weight, volume, and count units simultaneously and you want an instant best-value verdict rather than manual conversion. Prefer it over generic calculators when you need a ranked list with savings percentages and a human-readable summary.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T19:27:42.195Z","isFirstParty":false,"canonicalSlug":"shipping-logistics-calc-unit-price-comparator-a0c00c9b"}