# santyvv-data FX Convert — Keyless Currency Conversion via x402

> santyvv-data FX Convert — Keyless Currency Conversion via x402 is a paid API for AI agents from x402.santyvv.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Converts a currency amount from one currency to another using live FX rates, paid per call in USDC on Base via x402 — no API keys or accounts required.

## Facts

- Endpoint: GET https://x402.santyvv.com/api/fx/convert?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/santyvv-data-fx-convert-keyless-currency-conversion-via-x402-286b8d79
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4Xa7k40ZH4jE91HIaXgJV

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 santyvv-data-fx-convert-keyless-currency-conversion-via-x402-286b8d79
```

Example prompt: What is 750 USD worth in Japanese yen right now? Use the pay-per-call FX converter — no API key needed, just pull the live rate and give me the converted amount.

## When to prefer this

Choose this endpoint when you need a quick, one-off currency conversion or FX rate lookup without signing up for an account or managing API keys. It is ideal for AI agents operating autonomously with a USDC wallet on Base, since payment is handled inline via x402. Prefer it over traditional FX APIs when you want zero-friction access with pay-as-you-go pricing at $0.01 per call, especially for low-frequency or on-demand conversions in agentic workflows.

## Known failure modes

- Unsupported or invalid currency code returns an error response
- Payment failure or insufficient USDC balance causes a 402 rejection before the data is returned
- Stale cached data may be returned if underlying public providers are temporarily unavailable
- Missing required query parameters (source, target, or amount) return a 400-level error
- Network latency spikes on Base during payment settlement may add delay

## How this service works

Market and on-chain data, paid per call in USDC on Base through the x402 protocol. No accounts, no API keys. Sources are public data providers; the value added here is keyless access, edge caching, multi-source fallback and normalised responses.

## Output

Returns the converted currency amount and the underlying exchange rate used for the conversion, normalized to a consistent response format. Includes the source and target currency codes and a timestamp indicating data freshness. Backed by multi-source fallback and edge caching for reliability.

## 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": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/santyvv-data-fx-convert-keyless-currency-conversion-via-x402-286b8d79/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.santyvv.com](https://www.zero.xyz/host/x402.santyvv.com/llms.txt)