# MoneyTools Unit Converter

> MoneyTools Unit Converter is a paid API for AI agents from tools.moneytools.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-11-05).

Converts values between units of length, mass, volume, area, speed, time, data, energy, pressure, temperature, and cryptocurrency denominations (wei/gwei/ETH)

## Facts

- Endpoint: GET https://tools.moneytools.dev/v1/units?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-05
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/moneytools-unit-converter-835b5805
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1bZb_spIDRetgS8HHaYBo

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability moneytools-unit-converter-835b5805
```

Example prompt: Convert 1.5 ETH to gwei for me — I need the exact number.

## When to prefer this

Use this endpoint when you need precise, programmatic unit conversion — especially for cryptocurrency denominations (wei/gwei/ETH), data storage units distinguishing SI vs binary prefixes (KB vs KiB), or less common area units like 坪 (ping). Prefer this over general-purpose calculators when exact numeric output is needed in a structured JSON format for downstream computation.

## Known failure modes

- Unsupported or misspelled unit names return an error
- Missing required query parameters (value, from, to) return a 400-level error
- Incompatible unit types (e.g. converting length to mass) return a conversion error
- After 10 free calls per day per tool, an HTTP 402 is returned if no payment method is configured
- Invalid numeric value format (non-numeric string) returns an error

## How this service works

Catalog of MoneyTools: 115 cheap, read-only tools for AI agents. Free daily tier, then x402 USDC micropayments or prepaid credits. Token safety, approvals, tx decoding, EIP-712 risk, gas, ENS, x402 validation, DNS, RDAP, JSON Schema, time, FX.

## Output

A JSON object containing the converted numeric result for the specified value and unit pair, along with payment metadata (whether the call was charged, network, amount in USD, transaction hash if applicable) and free-tier usage status.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "const": "http"
    },
    "method": {
     "const": "GET"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "value",
      "from",
      "to"
     ],
     "properties": {
      "to": {
       "type": "string",
       "examples": [
        "gwei"
       ],
       "description": "unit"
      },
      "from": {
       "type": "string",
       "examples": [
        "eth"
       ],
       "description": "unit"
      },
      "value": {
       "type": "string",
       "examples": [
        "1.5"
       ],
       "description": "number"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "properties": {
      "payment": {
       "type": "object",
       "properties": {
        "charged": {
         "type": "boolean"
        },
        "network": {
         "type": "string"
        },
        "amountUsd": {
         "type": "string"
        },
        "transaction": {
         "type": [
          "string",
          "null"
         ]
        }
       }
      },
      "freeTier": {
       "type": "object"
      },
      "_moneytools": {
       "type": "object",
       "description": "optional plan / partner hints"
      }
     },
     "description": "Tool-specific JSON result (see llms.txt / openapi.json). Always includes payment info.",
     "additionalProperties": true
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/moneytools-unit-converter-835b5805/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tools.moneytools.dev](https://www.zero.xyz/host/tools.moneytools.dev/llms.txt)