# Hyperliquid Perp Orderbook (x402 Pay-per-call)

> Hyperliquid Perp Orderbook (x402 Pay-per-call) is a paid API for AI agents from kr-x402-mvp.kgy5612.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-31).

Returns the live Hyperliquid perpetual L2 orderbook for BTC, ETH, or SOL — best bid/ask, mid price, spread in bps, and configurable depth — via pay-per-call x402 (USDC on Base).

## Facts

- Endpoint: GET https://kr-x402-mvp.kgy5612.workers.dev/v1/orderbook?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hyperliquid-perp-orderbook-x402-pay-per-call-1758d8da
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TgZl_7vPpGfmHCFG3dYVE

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 hyperliquid-perp-orderbook-x402-pay-per-call-1758d8da
```

Example prompt: Pull the live Hyperliquid BTC perp orderbook — give me the best bid, best ask, mid price, spread in bps, and the top 10 levels on each side.

## When to prefer this

Choose this endpoint when your agent needs real-time Hyperliquid perpetual orderbook data (not just a single mid price) and wants configurable depth — especially useful for pre-trade slippage estimation, market-making quote setting, or spread monitoring. It requires no API key setup, just x402 USDC micropayment on Base, making it ideal for autonomous agents that self-pay per call. Prefer this over generic price feeds when you need L2 book structure (multiple levels), not just a spot price.

## Known failure modes

- Payment not included or invalid x402 USDC payment → 402 Payment Required
- Unsupported coin symbol → validation error or default fallback to BTC
- Depth out of range (< 1 or > 20) → schema validation error
- Hyperliquid upstream API unavailable → 502/503 or stale data
- Network timeout from Cloudflare Worker → 524 timeout

## How this service works

Pay-per-call crypto microdata for trading/onchain AI agents via x402 (USDC on Base): Base gas, token risk, balances, multi-venue prices, Hyperliquid book/funding, kimchi premium. No API keys.

## Output

Returns a JSON object with: coin (BTC/ETH/SOL), venue ('hyperliquid'), best_bid, best_ask, mid price, spread_bps, arrays of bid and ask levels each with price (px), size (sz), and order count (n), data sources list, and updated_at ISO timestamp.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "coin": {
       "enum": [
        "BTC",
        "ETH",
        "SOL"
       ],
       "type": "string",
       "examples": [
        "BTC",
        "ETH",
        "SOL"
       ],
       "description": "Perp coin (default BTC)"
      },
      "depth": {
       "type": "integer",
       "maximum": 20,
       "minimum": 1,
       "description": "Levels per side (default 5)"
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "mid": 80860.5,
  "asks": [
   {
    "n": 3,
    "px": 80861,
    "sz": 0.8
   }
  ],
  "bids": [
   {
    "n": 4,
    "px": 80860,
    "sz": 1.2
   }
  ],
  "coin": "BTC",
  "venue": "hyperliquid",
  "sources": [
   "https://api.hyperliquid.xyz/info"
  ],
  "best_ask": 80861,
  "best_bid": 80860,
  "spread_bps": 0.124,
  "updated_at": "2026-10-28T11:00:00Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hyperliquid-perp-orderbook-x402-pay-per-call-1758d8da/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kr-x402-mvp.kgy5612.workers.dev](https://www.zero.xyz/host/kr-x402-mvp.kgy5612.workers.dev/llms.txt)