# MoneyTools Currency Converter (FX)

> MoneyTools Currency Converter (FX) 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 fiat currency amounts using daily reference exchange rates from ECB (via Frankfurter) and ExchangeRate-API, returning non-tradable indicative rates

## Facts

- Endpoint: GET https://tools.moneytools.dev/v1/fx?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-currency-converter-fx-23e59656
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_o8H2Pz3c9yPjlakBEZm8C

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-currency-converter-fx-23e59656
```

Example prompt: What's 250 US dollars in Taiwanese dollars and euros right now, using daily reference rates?

## When to prefer this

Choose this endpoint when you need a quick, low-cost daily reference FX rate for fiat-to-fiat conversions, especially when you require broad currency coverage (including TWD and other non-ECB currencies) or need pay-per-call micropayment billing via USDC on Base. Prefer it over heavyweight FX APIs when you don't need live tradable or tick-level rates, and when free tier usage (10 calls/day) or sub-cent per-call pricing matters.

## Known failure modes

- Invalid or unsupported ISO 4217 currency code returns an error response
- Free tier exhausted (10 calls/day) with no payment method returns HTTP 402 with PAYMENT-REQUIRED header
- Network/provider outage from ECB Frankfurter or ExchangeRate-API may cause unavailability
- Malformed query parameters (missing 'from' or 'to') trigger a validation error
- Micropayment failure (bad x402 payment or insufficient USDC) results in HTTP 402, no charge on failure

## 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 currency amount(s) and the exchange rate(s) used, plus a payment block indicating whether the call was charged (boolean), network used, USD amount charged, and transaction hash (or null if free tier). Also includes a freeTier status object and optional MoneyTools plan/partner hints. Rates are daily reference rates, not live tradable quotes.

## 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": [
      "from",
      "to"
     ],
     "properties": {
      "to": {
       "type": "string",
       "examples": [
        "TWD,EUR"
       ],
       "description": "one or more codes, comma list"
      },
      "from": {
       "type": "string",
       "examples": [
        "USD"
       ],
       "description": "ISO 4217 code"
      },
      "amount": {
       "type": "number",
       "examples": [
        "10"
       ],
       "description": "default 1"
      }
     }
    }
   }
  },
  "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-currency-converter-fx-23e59656/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)