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Unit Converter - List Units by Measure
x402
Unit Converter - List Units by Measure is a paid API for AI agents from unit.openverbs.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).
Lists all available unit types and conversion options for a given measurement category (e.g. length, mass, temperature).
Price / call$0.002
Success—
StatusUnknown
How this service works
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.
Output
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.
Example use cases
Exploring supported temperature units
“Can you show me all the temperature units I can convert between? I want to know what options are available before I start converting.”
Building a unit picker for length
“List all the length units the converter supports — I'm building a dropdown so users can pick which unit to convert from and to.”
Checking available digital storage units
“What digital storage units are supported? I need to know all the options like bytes, kilobytes, megabytes, etc. that I can use for conversions.”
Technical details
Endpoint
POSThttps://unit.openverbs.com/v1/listWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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