# Frankfurter Currency List via API Osk Gateway

> Frankfurter Currency List via API Osk Gateway is a paid API for AI agents from gateway.apiosk.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Returns a map of all supported ISO 4217 currency codes to their full currency names via the Frankfurter API

## Facts

- Endpoint: GET https://gateway.apiosk.com/frankfurter/currencies
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/frankfurter-currency-list-via-api-osk-gateway-6d879c40
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_s-h8sc2gwogWGl2SAlJOv

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 frankfurter-currency-list-via-api-osk-gateway-6d879c40
```

Example prompt: What currencies does the Frankfurter exchange rate service support? Give me the full list of currency codes and their names.

## When to prefer this

Use this endpoint when you need to enumerate all available currencies supported by the Frankfurter exchange rate API before performing currency conversion or rate lookups. Prefer this over hardcoding currency lists to ensure you always have the current supported set. Useful as a prerequisite step before calling a rates or conversion endpoint.

## Known failure modes

- HTTP 402 Payment Required if x402 payment header is missing or invalid
- HTTP 500 if the upstream Frankfurter API is unavailable
- Empty or partial response if Frankfurter returns incomplete data
- Network timeout if gateway.apiosk.com is unreachable

## How this service works

The list of supported currency codes and their full names.

## Output

A JSON object mapping ISO 4217 currency codes (e.g. 'USD', 'EUR', 'JPY') to their full currency names (e.g. 'US Dollar', 'Euro', 'Japanese Yen'). Returns all currencies supported by the Frankfurter API for exchange rate lookups.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/frankfurter-currency-list-via-api-osk-gateway-6d879c40/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gateway.apiosk.com](https://www.zero.xyz/host/gateway.apiosk.com/llms.txt)