{"uid":"cap_JlsOLEu8N_fFHFuNKmUAf","slug":"unit-converter-list-units-by-measure-74658b34","name":"Unit Converter - List Units by Measure","description":"List the supported units and their metadata (abbreviation, measure, system, singular/plural names), optionally filtered to a single measure — a discovery endpoint for choosing valid `from`/`to` values.","url":"https://unit.openverbs.com/v1/list","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","required":[],"properties":{"measure":{"enum":["length","area","mass","volume","each","temperature","time","digital","partsPer","speed","pace","pressure","current","voltage","power","reactivePower","apparentPower","energy","reactiveEnergy","volumeFlowRate","illuminance","frequency","angle"],"type":"string","description":"Restrict to one measure, one of length, area, mass, volume, each, temperature, time, digital, partsPer, speed, pace, pressure, current, voltage, power, reactivePower, apparentPower, energy, reactiveEnergy, volumeFlowRate, illuminance, frequency, angle."}},"additionalProperties":false},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_k0uf6UM69KAB98rNE9jAm","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Lists all available unit types and conversion options for a given measurement category (e.g. length, mass, temperature).","exampleAgentPrompt":"What units are available for converting mass measurements? I want to see everything supported under the mass category.","exampleUseCases":[{"title":"Exploring supported temperature units","prompt":"Can you show me all the temperature units I can convert between? I want to know what options are available before I start converting."},{"title":"Building a unit picker for length","prompt":"List all the length units the converter supports — I'm building a dropdown so users can pick which unit to convert from and to."},{"title":"Checking available digital storage units","prompt":"What digital storage units are supported? I need to know all the options like bytes, kilobytes, megabytes, etc. that I can use for conversions."}],"resultDescription":"Returns a list of all supported units within the specified measurement category (e.g. all length units: meters, feet, inches, etc.), or all units across all categories if no measure filter is provided.","failureModes":["Invalid measure enum value returns an error — must be one of the 23 supported categories","Empty or malformed body may return a validation error","Network timeout for slow connections","Payment failure if USDC balance is insufficient for the $0.002 per-call fee"],"whenToPreferThis":"Use this endpoint when you need to discover what units are available before performing a conversion, or when building a UI that lets users select units dynamically. Ideal for populating dropdowns, validating user input unit names, or checking if a specific unit type is supported within a given measurement category.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:30:24.542Z","isFirstParty":false}