# Marketstack Currencies

> Marketstack Currencies is a paid API for AI agents from gateway.apiosk.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Retrieves a list of supported currency codes and metadata from the Marketstack financial data API

## Facts

- Endpoint: GET https://gateway.apiosk.com/marketstack/currencies
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/marketstack-currencies-5b0f5110
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zoUzE4se67pZdaq3xVE-v

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 marketstack-currencies-5b0f5110
```

Example prompt: Can you pull the list of currencies supported by Marketstack — show me up to 50 of them?

## When to prefer this

Use this endpoint when you need to enumerate or validate the set of currencies available within the Marketstack ecosystem before making downstream stock price or exchange rate queries. Prefer this over manual currency lists when you need a canonical, up-to-date set of Marketstack-supported currencies. It is a lightweight, read-only lookup with no side effects, making it safe to call frequently for reference data.

## Known failure modes

- Invalid limit parameter type returns a 400 validation error
- Payment not processed (402) if x402 USDC payment is not attached or insufficient
- Rate limiting or quota exceeded returns a 429 or 402 response
- Gateway timeout if upstream Marketstack API is unavailable
- Empty result set if no currencies are indexed

## How this service works

Supported currencies.

## Output

Returns a paginated list of currency objects supported by the Marketstack platform, each including currency code, name, and related metadata. The response is scoped by an optional limit parameter controlling how many records are returned.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/marketstack-currencies-5b0f5110/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)