{"uid":"cap_IuF13qaKJ4uWTXBwdb6NP","slug":"fx402-v1-list-currency-unit-conversion-reference-list-05013775","name":"fx402 /v1/list — Currency & Unit Conversion Reference List","description":"Pay-per-call currency and unit conversion utility for AI agents: currency exchange at ECB daily reference rates, FX rate tables, and physical unit conversion (length, mass, temperature, volume, area, speed, time, digital). No API key, no subscription — agents pay per request via x402 (Base/USDC) or MPP (Tempo/pathUSD).","url":"https://fx402.alogos.xyz/v1/list","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"include":{"enum":["all"],"type":"string","description":"Reference scope to return. Currently only 'all' is supported; this optional parameter exists so agent registries can detect a concrete input schema."}}},"responseSchema":{"type":"object","required":["currencies","units"],"properties":{"units":{"type":"object","additionalProperties":{"type":"array","items":{"type":"string"}}},"ratesDate":{"type":"string"},"currencies":{"type":"array","items":{"type":"string"}}},"additionalProperties":true},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_lEftDQiFnw6YrSs13Z-W-","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the full list of supported currencies and unit conversion categories available in the fx402 pay-per-call conversion service","exampleAgentPrompt":"What currencies and unit types does fx402 support? Show me everything available — pull the full list including all currency codes and physical unit categories.","exampleUseCases":null,"resultDescription":"A structured list of all currencies (referenced against ECB daily rates) and physical unit conversion categories (length, mass, temperature, volume, area, speed, time, digital) that the fx402 service supports, enabling agents to validate inputs before making conversion calls.","failureModes":["Payment not provided or rejected — returns 402 Payment Required","Invalid 'include' parameter value — may return 400 or ignore the parameter","Service temporarily unavailable — 503 or timeout","Network connectivity issue to fx402.alogos.xyz"],"whenToPreferThis":"Use this endpoint when an agent needs to discover or validate what currencies or unit types fx402 supports before making a conversion call, or when building a UI/menu of available options. It is the discovery/capability-enumeration endpoint for the fx402 service, not the conversion endpoint itself.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:33:10.345Z","isFirstParty":false}