# Vextorium Perpetual Funding Rates

> Vextorium Perpetual Funding Rates is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-19).

Returns perpetual futures funding rates, open interest, mark/oracle prices, and volume for crypto assets, or a ranked list of markets by funding rate or open interest

## Facts

- Endpoint: POST https://api.vextorium.com/v1/perp-funding?utm_source=zero.xyz
- Price: $0.009/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-perpetual-funding-rates-a4df880d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tcEHOJtztEx-ZXHGy0_3a

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 vextorium-perpetual-funding-rates-a4df880d -d '<json body>'
```

Example prompt: What's the current funding rate for BTC on Hyperliquid perps — is it annualized positive or negative, who's paying, and what's the 7-day average annual rate?

## When to prefer this

Choose this endpoint when you need live perpetual futures funding rates, open interest, or market rankings from Hyperliquid. Prefer this over generic DeFi APIs when you specifically need Hyperliquid data, funding direction (who pays), multi-timeframe averages (hourly, 24h, 7d), and the ability to screen and rank markets by funding extremity or open interest.

## Known failure modes

- Invalid or unsupported coin symbol returns error or empty result
- Limit out of range (must be 1-100) returns validation error
- Missing required body fields returns 400 bad request
- min_interest_usd set too high may return empty ranking
- Payment not settled via x402 returns 402 Payment Required

## How this service works

558 pay-per-call data APIs for AI agents: Solana and EVM on-chain data, tokenized stocks, DeFi, Hyperliquid, economy and official statistics, FX, validation, web and developer tools. Pay in USDC via x402.

## Output

A JSON object (single coin) or array (ranking) containing: source exchange, currency, who pays direction, mark price, oracle price, premium percentage, max leverage, open interest (coins and USD), 24h volume USD, 24h price change percentage, funding interval, current hourly funding percentage, annual funding percentage, 7-day average annual funding, and 24h average annual funding.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer",
   "maximum": 100,
   "minimum": 1,
   "description": "Markets in the ranking (1-100, default 20)"
  },
  "order": {
   "enum": [
    "high_funding",
    "low_funding",
    "extreme_funding",
    "volume",
    "open_interest"
   ],
   "type": "string",
   "description": "Ranking order when no coin is given"
  },
  "currency": {
   "type": "string",
   "description": "Coin, e.g. BTC, ETH, SOL, HYPE. Omit for a ranking of markets"
  },
  "min_interest_usd": {
   "type": "number",
   "description": "Minimum open interest in USD for the ranking (default 1000000)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "source": "Hyperliquid (public L1 data, api.hyperliquid.xyz)",
  "currency": "BTC",
  "who_pays": "longs pay shorts",
  "mark_price": 84028,
  "premium_pct": -0.0467,
  "max_leverage": 40,
  "oracle_price": 84068.3,
  "open_interest": 33164.47324,
  "change_24h_pct": 1.26,
  "volume_24h_usd": 2276212187,
  "funding_interval": "hourly",
  "open_interest_usd": 2786744357,
  "annual_funding_pct": 5.7,
  "hourly_funding_pct": 0.00065,
  "avg_annual_funding_7d_pct": 8.8,
  "avg_annual_funding_24h_pct": 6.4
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-perpetual-funding-rates-a4df880d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)