# CryptoFeed402 ETH Perpetuals Snapshot

> CryptoFeed402 ETH Perpetuals Snapshot is a paid API for AI agents from cryptofeed402.site, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-21).

Returns a real-time Hyperliquid perpetuals market snapshot for ETH, including mark price, funding rate, open interest, 24h volume, and leverage info.

## Facts

- Endpoint: GET https://cryptofeed402.site/perps/ETH?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cryptofeed402-eth-perpetuals-snapshot-9d3032c2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JlH32gHyRqI50DTw6yORQ

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 cryptofeed402-eth-perpetuals-snapshot-9d3032c2
```

Example prompt: What's the current ETH perpetual mark price, funding rate, and open interest on Hyperliquid right now?

## When to prefer this

Choose this endpoint when you need a real-time, all-in-one ETH perpetuals data snapshot from Hyperliquid specifically, covering mark price, funding rate, open interest, volume, leverage, oracle price, and funding extremity ranking in a single call. It is optimized for AI-to-AI consumption via x402 micropayments and is ideal when you want structured, machine-readable perp data without scraping or managing a WebSocket connection. Prefer this over generic crypto price APIs when funding rate, open interest, and leverage metadata are required together.

## Known failure modes

- 402 Payment Required — no valid x402 USDC payment header on Base mainnet provided
- Invalid or unsupported symbol in path (only BTC, ETH, SOL, HYPE, NEAR, AAVE supported)
- Upstream Hyperliquid data unavailable — stale or missing snapshot
- Network timeout if Hyperliquid API is slow or down
- Malformed payment — wrong chain, wrong asset address, or insufficient amount

## How this service works

AI-to-AI crypto data. Paid routes use x402 (USDC on Base mainnet eip155:8453, asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913); unpaid calls return 402 with payment requirements. Not financial advice.

## Output

A JSON object containing: current timestamp and venue (Hyperliquid), ETH mark price, oracle price, premium and premium percentage, bid/ask impact prices, funding rate (hourly and 8h), annualized funding APR, which side is paying (longs or shorts), funding interval, open interest in USD and ETH coins, 24h volume in USD, 24h price change percentage, max leverage, and a funding extremity rank showing where ETH sits relative to other assets in the universe.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "as_of": "2026-10-19T20:57:31.782Z",
  "venue": "hyperliquid",
  "mid_px": 111655,
  "symbol": "BTC",
  "venues": [
   {
    "venue": "hyperliquid",
    "symbol": "BTC",
    "mark_px": 111650,
    "funding_rate": -0.0000052,
    "funding_apr_pct": -4.56,
    "open_interest_usd": 3461000000,
    "funding_interval_hours": 1
   }
  ],
  "funding": {
   "rate_8h": -0.0000416,
   "rate_hourly": -0.0000052,
   "side_paying": "shorts",
   "annualized_pct": -4.56,
   "interval_hours": 1
  },
  "mark_px": 111650,
  "premium": -0.00031,
  "impact_px": {
   "ask": 111660,
   "bid": 111640
  },
  "oracle_px": 111700,
  "disclaimer": "Automated data for AI agents. Not financial advice.",
  "premium_pct": -0.031,
  "generated_at": "2026-10-19T20:57:31.790Z",
  "max_leverage": 40,
  "open_interest": {
   "usd": 3461000000,
   "coins": 31000.5
  },
  "change_24h_pct": 1.2,
  "volume_24h_usd": 2100000000,
  "funding_extreme": {
   "rank": 8,
   "top10": [
    "SAND",
    "XMR"
   ],
   "in_top10": true,
   "ranked_universe": 67
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cryptofeed402-eth-perpetuals-snapshot-9d3032c2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from cryptofeed402.site](https://www.zero.xyz/host/cryptofeed402.site/llms.txt)