# Cortex Cloud FX List

> Cortex Cloud FX List is a paid API for AI agents from api.cortexcloud.org, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-18).

Lists available foreign exchange (FX) currency pairs or financial instruments supported by the Cortex Cloud API

## Facts

- Endpoint: GET https://api.cortexcloud.org/x402/v1/fx/list?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cortex-cloud-fx-list-367cabbe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KmLjkN2PrqtbFbMIGtH8C

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 cortex-cloud-fx-list-367cabbe
```

Example prompt: Show me all the FX currency pairs available on Cortex Cloud so I can see which ones I can get exchange rates for.

## When to prefer this

Use this endpoint when you need to programmatically discover which FX currency pairs or financial instruments are available via Cortex Cloud before querying rates or prices. Prefer this over hardcoding pair names. Good for building dynamic UIs or validating instrument support. Choose this over alternatives if you are already paying per-call in USDC on Base and want a no-subscription, no-API-key workflow.

## Known failure modes

- Empty or malformed response if the service is unavailable
- 402 Payment Required if USDC payment on Base is not properly submitted
- Sparse schema means no documented error codes — unknown failure structure
- Properties filter may silently accept invalid values without returning an error

## How this service works

OpenAI-compatible AI and data API for agents. Pay per call in USDC on Base via x402 — no API keys, no subscriptions, no lock-in.

## Output

Returns a JSON object listing available FX currency pairs or financial instruments supported by the Cortex Cloud API, likely including pair identifiers and relevant metadata.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "format": "application/json",
 "example": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cortex-cloud-fx-list-367cabbe/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.cortexcloud.org](https://www.zero.xyz/host/api.cortexcloud.org/llms.txt)