{"uid":"cap_kEUO9NDIXW9wxC6qqLxHZ","slug":"apexapi-length-unit-converter-24a94f7a","name":"ApexAPI Length Unit Converter","description":"Crypto, AI, Social Media, Finance, Weather, Tools & more. Pay per call in USDC on Base. No API keys.","url":"https://apex-api-gamma.vercel.app/api/tools/convert/length?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"query":{"type":"string","description":"Search query or input parameter"}}},"responseSchema":{"type":"object","description":"API response data"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.147418","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":"$0.147418/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.147418","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.147418","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_lZPg4h9U8pPzCYo9mmOE9","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.147418","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts a length value from one unit of measurement to another (e.g. meters to feet, miles to kilometers)","exampleAgentPrompt":"Convert 26.2 miles to kilometers for me — I need the exact length in metric units.","exampleUseCases":null,"resultDescription":"Returns the converted length value in the requested target unit, along with the result of the unit conversion computation.","failureModes":["Invalid or unrecognized unit type returns an error","Missing or malformed query string returns 400 bad request","Unsupported unit combination returns no result","Payment failure (insufficient USDC) returns 402 error","Ambiguous query string with no parseable value or unit returns an error"],"whenToPreferThis":"Use this endpoint when an AI agent needs to perform on-demand length/distance unit conversions without maintaining its own conversion logic, especially in a pay-per-call workflow on Base using USDC and no API key management.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T18:38:14.150Z","isFirstParty":false,"canonicalSlug":"apexapi-length-unit-converter-24a94f7a"}