# Vextorium FX Rates

> Vextorium FX Rates is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-19).

Returns current foreign exchange rates (units per USD) with monthly change percentages for one or more currencies, sourced from the Bank for International Settlements.

## Facts

- Endpoint: POST https://api.vextorium.com/v1/fx-rates?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-fx-rates-675ae2b3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nsifkDfKHx8jELZOWerCf

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 vextorium-fx-rates-675ae2b3 -d '<json body>'
```

Example prompt: What are the current exchange rates for MXN, ARS, and EUR against the USD, including how much each has changed over the past month?

## When to prefer this

Choose this endpoint when you need official, authoritative FX rates sourced from the Bank for International Settlements rather than commercial data providers, especially for macroeconomic analysis, government statistics contexts, or when monthly change context is needed alongside the rate. Prefer this over real-time tick-level FX feeds when official monthly BIS data is acceptable.

## Known failure modes

- Invalid or unrecognized ISO currency codes return empty results or an error
- Network timeout if BIS upstream is slow
- If currencies parameter is malformed (not comma-separated), may return an error or default to all currencies
- Rate data may be as of last monthly BIS publication, not real-time intraday

## How this service works

232 pay-per-call data APIs for AI agents: official statistics and economy (ECB, Fed, Eurostat, World Bank, SEC, BOE, INE), crypto prices and sentiment, Spanish public data, compliance (sanctions, VAT, IBAN, LEI), science, weather, web and developer tools and local AI text tools. Pay in USDC via x402.

## Output

A JSON object containing an array of currency records, each with the country code, ISO currency code, date of the rate, units per USD, and monthly percentage change (positive = currency depreciated vs. dollar). Also includes the total count of currencies returned and the BIS data source identifier.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "currencies": {
   "type": "string",
   "description": "Comma-separated ISO codes (omit for all)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "note": "monthly_change_pct > 0 = the currency has depreciated against the dollar. Cross rates calculated by Vextorium from ECB reference rates.",
  "types": [
   {
    "date": "2026-10-16",
    "currency": "BRL",
    "units_per_usd": 5.08282,
    "monthly_change_pct": -1.23
   },
   {
    "date": "2026-10-16",
    "currency": "EUR",
    "units_per_usd": 0.888652,
    "monthly_change_pct": 2.52
   }
  ],
  "source": "Source: ECB statistics (euro foreign exchange reference rates)",
  "currencies": 3,
  "comparison_date": "2026-09-16"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-fx-rates-675ae2b3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)