# Vaunt BTC Trading Cost on Hyperliquid

> Vaunt BTC Trading Cost on Hyperliquid is a paid API for AI agents from vaunt-dispatch-production.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Returns real-fill execution quality metrics for BTC on Hyperliquid, including slippage (p50/p90 bps), taker fee, fill rate, time-to-fill, spread, round-trip cost, 1% depth, and funding APR, benchmarked against venue-class median.

## Facts

- Endpoint: GET https://vaunt-dispatch-production.up.railway.app/agent/x402/cost/BTC
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vaunt-btc-trading-cost-on-hyperliquid-9aa90694
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7ViiGtxUygmKkbhgUJWkX

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 vaunt-btc-trading-cost-on-hyperliquid-9aa90694
```

Example prompt: What's the true cost of trading BTC on Hyperliquid right now — I want to see real-fill slippage, taker fees, fill rate, spread, and how it compares to other venues?

## When to prefer this

Use this endpoint when you need empirical, real-fill execution quality data for BTC specifically on Hyperliquid — not model quotes or order book snapshots. It is ideal for pre-trade cost analysis, algo routing decisions, or benchmarking Hyperliquid's BTC market against other venues. Prefer this over generic order book APIs when you want slippage, fees, and fill rate from actual trades rather than theoretical estimates.

## Known failure modes

- Endpoint unavailable if Railway deployment is down (502/503)
- Stale data if Vaunt's own orders have not executed recently
- Payment failure if x402 micropayment of $0.001 USDC is not completed
- Rate limiting if too many requests are made in a short window
- Empty or null fields if BTC market is inactive or data feed is delayed

## How this service works

True cost of trading BTC on Hyperliquid, measured on Vaunt's own IOC taker orders: slippage vs mid (p50/p90 bps), taker fee paid, wall-clock to fill, fill rate, against the venue-class median, plus spread, round-trip cost, depth within 1% and funding APR. Real fills, not quotes.

## Output

A JSON object containing BTC execution quality metrics derived from Vaunt's own live IOC taker orders on Hyperliquid: slippage vs mid at p50 and p90 in basis points, taker fee paid, wall-clock time to fill, fill rate, spread, round-trip cost, order book depth within 1%, funding APR, and a comparison against the venue-class median.

## 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": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vaunt-btc-trading-cost-on-hyperliquid-9aa90694/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from vaunt-dispatch-production.up.railway.app](https://www.zero.xyz/host/vaunt-dispatch-production.up.railway.app/llms.txt)