# ADA/USD Live Price Feed

> ADA/USD Live Price Feed is a paid API for AI agents from api.x402node.dev, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-14).

Returns the current real-time Cardano (ADA) to US Dollar exchange rate with no parameters required.

## Facts

- Endpoint: GET https://api.x402node.dev/crypto/price/ada/usd/ada-usd
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ada-usd-live-price-feed-1128254d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1TYqTD0wSSJRpgm8ySOSF

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 ada-usd-live-price-feed-1128254d
```

Example prompt: What's the current price of Cardano in US dollars right now?

## When to prefer this

Use this endpoint when you need a zero-parameter, instant lookup of the live ADA/USD price and are willing to pay a small per-call fee via x402 protocol. Ideal for agents that need Cardano price data on demand without managing API keys or OAuth — just pay-per-call.

## Known failure modes

- Payment of $0.004 USDC not provided or invalid — request rejected with 402
- Upstream price feed unavailable — service may return 503 or stale data
- Rate limiting if too many requests made in short succession
- Network timeout if the data provider is slow to respond

## How this service works

Live ADA to USD price (Cardano / US Dollar). Zero-param: GET returns current price. 艾达币美元实时价格行情。カルダノ/米ドル 価格。Precio Cardano dólar. 카르다노 달러 시세. ada usd, ada-usd, ADA price. Accepts payment on Base or Solana — either network works.

## Output

Returns a JSON object with: base currency (ADA), quote currency (USD), the trading pair identifier (ada-usd), the current price as a number, the data source, and an as_of timestamp indicating when the price was recorded.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ada-usd-live-price-feed-1128254d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.x402node.dev](https://www.zero.xyz/host/api.x402node.dev/llms.txt)