# OpenWebNinja Realtime Currency Exchange Rate

> OpenWebNinja Realtime Currency Exchange Rate is a paid API for AI agents from x402.openwebninja.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Returns the current exchange rate between two ISO 4217 currency symbols, including previous close and last update timestamp.

## Facts

- Endpoint: GET https://x402.openwebninja.com/realtime-finance-data/currency-exchange-rate
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/openwebninja-realtime-currency-exchange-rate-401f5a3c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ec3kdtKZV1qQ1s4MvHg_t

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 openwebninja-realtime-currency-exchange-rate-401f5a3c
```

Example prompt: What's the current exchange rate from USD to EUR, and what was the previous closing rate?

## When to prefer this

Use this endpoint when you need a real-time, point-in-time currency exchange rate between two specific ISO 4217 currencies, including the previous close for context. Ideal for fintech apps, travel cost calculators, or any workflow requiring live forex data without a full trading API integration.

## Known failure modes

- Invalid or unsupported ISO 4217 currency code returns an error response
- Missing required from_symbol or to_symbol parameters results in a 400-level error
- Payment not completed or insufficient USDC balance causes a 402 payment required response
- Rate data temporarily unavailable for an exotic currency pair may return stale or missing data

## How this service works

40+ public web-data, SERP, e-commerce, real-estate, finance and AI-search APIs, payable per call over x402 (USDC on Base, Polygon, Arbitrum). No account or API key required. Most endpoints $0.003; AI-model endpoints $0.005.

## Output

Returns a JSON object containing the real-time exchange rate between the two specified currencies, the previous closing rate, the last update timestamp in UTC, the currency symbols, and a status/request ID for traceability.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/openwebninja-realtime-currency-exchange-rate-401f5a3c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.openwebninja.com](https://www.zero.xyz/host/x402.openwebninja.com/llms.txt)