{"uid":"cap_q3gulUILlNpbvMiDxxLMF","slug":"touchstone-unit-converter-bd927d2d","name":"Touchstone Unit Converter","description":"Deterministic unit conversion reproducing NIST SP 811 exact factors (length, mass, volume, energy, power, pressure, force, area, speed, data, angle, frequency + affine temperature). Every answer signed. Free sample, no payment required: GET /play/unit","url":"https://touchstone.locomot.io/unit","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":["value","from","to"],"properties":{"to":{"type":"string","description":"target unit (same dimension)"},"from":{"type":"string","description":"source unit (name or alias, e.g. mile, kg, °C)"},"value":{"type":"number","description":"quantity to convert"}}}},"additionalProperties":false},"output":{"type":"object","properties":{"op":{"type":"string"},"to":{"type":"string"},"from":{"type":"string"},"exact":{"type":"boolean"},"value":{"type":"number"},"result":{"type":"number"},"source":{"type":"string"},"dimension":{"type":"string"},"conversion_factor":{"type":"number"},"conversion_factor_ratio":{"type":"string"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_IiDGnb6TJhgnwluKajLG3","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts a numeric quantity from one unit of measurement to another within the same dimension (e.g. miles to kilometers, kg to pounds, °C to °F).","exampleAgentPrompt":"Convert 26.2 miles to kilometers for me — I need the exact result and want to know the conversion factor used.","exampleUseCases":null,"resultDescription":"Returns the converted numeric result, the conversion factor applied, the physical dimension (e.g. length, mass, temperature), whether the conversion is exact, the source and target unit names, the input value, and the operation description.","failureModes":["Incompatible units (different dimensions) — e.g. converting kg to meters returns an error","Unknown unit name or alias not recognized by the service","Missing required query parameters (value, from, or to) returns a 400-style error","Payment not attached or insufficient — returns HTTP 402 requiring x402 payment of $0.001 USDC"],"whenToPreferThis":"Choose this endpoint when you need a reliable, pay-per-call unit conversion with structured output including conversion factor and dimension metadata. Useful when you want machine-readable results (exact flag, dimension) rather than just a plain text answer, or when embedding unit conversion into an automated workflow.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:35:51.069Z","isFirstParty":false}