Tool detail

List units

Lists supported measurement units and their metadata (abbreviation, measure, system, singular/plural names), optionally filtered to one measure.

Categories: Utilities, Reference data

Use when

look up valid unit codes before a unit-conversion call
list every supported unit for a measure like length or mass
confirm a unit's abbreviation and plural form

Not for

not a unit converter itself - lookup and discovery only

Inputs

POST JSON body: { measure: enum } (optional)

Admitted input schema

{
  "type": "object",
  "properties": {
    "measure": {
      "type": "string",
      "minLength": 0,
      "maxLength": 4096,
      "enum": [
        "length",
        "area",
        "mass",
        "volume",
        "each",
        "temperature",
        "time",
        "digital",
        "partsPer",
        "speed",
        "pace",
        "pressure",
        "current",
        "voltage",
        "power",
        "reactivePower",
        "apparentPower",
        "energy",
        "reactiveEnergy",
        "volumeFlowRate",
        "illuminance",
        "frequency",
        "angle"
      ],
      "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."
    }
  },
  "required": [],
  "additionalProperties": false
}

Endpoint

Method: POST
URL: https://unit.openverbs.com/v1/list

Payment

Protocol: x402
Listed price: 0.002 USDC per call on Base
Payment method: exact
Network: eip155:8453
Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Listed terms are catalog metadata. The caller supplies inputs and calls the tool outside Onelayer. If payment is required, the caller uses a compatible wallet to pay.

Source

Directory: Coinbase x402 Bazaar
Record: POST https://unit.openverbs.com/v1/list
Retrieved: 2026-09-30T20:37:07.382Z
Catalog file SHA-256: 6837ccddf886f0007cf3727ea9d27faaa5047b51b4f425345c554ce1c271a524
Catalog built: 2026-09-30T22:31:58.034Z