# Cortex Cloud Crypto List

> Cortex Cloud Crypto List is a paid API for AI agents from api.cortexcloud.org, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Returns a list of available cryptocurrencies and their metadata from the Cortex Cloud data API

## Facts

- Endpoint: GET https://api.cortexcloud.org/x402/v1/crypto/list
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cortex-cloud-crypto-list-845c9855
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NMHgZwXt7rczi8U8QErYL

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-crypto-list-845c9855
```

Example prompt: Can you pull the full list of cryptocurrencies available through Cortex Cloud so I know which coins I can look up data on?

## When to prefer this

Use this endpoint when you need to discover which cryptocurrency assets are available in the Cortex Cloud ecosystem before making downstream data queries. It is especially useful as a pre-flight call to validate whether specific coins are supported, or to build dynamic UIs. Prefer this over hardcoding coin lists or querying a general crypto reference API when your workflow is already using Cortex Cloud's pay-per-call x402 model on Base.

## Known failure modes

- 402 Payment Required if USDC payment via x402 is not attached or insufficient
- Empty or minimal response if no crypto assets are currently indexed
- Malformed JSON if the service is degraded
- Timeout if the Cortex Cloud backend is unavailable
- Unexpected empty example object returned if the data layer has no entries

## 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

A JSON object containing an array or map of supported cryptocurrency assets, likely including identifiers such as ticker symbols, names, and potentially metadata like network or asset type. The exact schema is not fully documented but returns application/json.

## 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-crypto-list-845c9855/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)