# Cortex Cloud Crypto Price API

> Cortex Cloud Crypto Price API 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 the current market price for a specified cryptocurrency, paid per call in USDC via x402 with no API key required.

## Facts

- Endpoint: GET https://api.cortexcloud.org/x402/v1/crypto/price
- 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-price-api-0cdc50b9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lg9oghicLS_FzMyj40IEO

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-price-api-0cdc50b9
```

Example prompt: What's the current price of Bitcoin right now? Use the Cortex Cloud crypto price endpoint — pay per call, no API key needed.

## When to prefer this

Choose this endpoint when your agent needs real-time or near-real-time cryptocurrency prices without managing API keys or subscriptions — ideal for autonomous agents that pay per call in USDC on Base via x402. Best for lightweight, on-demand price lookups in agentic workflows where billing flexibility and no-lock-in matter.

## Known failure modes

- Unknown or unsupported cryptocurrency symbol returns an error or empty result
- Payment failure via x402 if USDC balance is insufficient or transaction is rejected
- Network timeout if the upstream price feed is temporarily unavailable
- Malformed request parameters result in a 400-level error
- Stale price data if the upstream market data provider is lagging

## 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 containing the current market price of the requested cryptocurrency, likely including the asset symbol and its price in USD or a specified quote currency.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "required": {
   "type": "string"
  },
  "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-price-api-0cdc50b9/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)