# Kronos Perpetual Futures Funding Rate & Market Data

> Kronos Perpetual Futures Funding Rate & Market Data is a paid API for AI agents from x402.coinopai.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-13).

Returns live perpetual-futures funding rates, mark/index prices, open interest, 24h volume, and crowding labels for BTC, ETH, SOL, XRP, and ADA across Kraken Futures and Hyperliquid, with per-symbol consensus metrics.

## Facts

- Endpoint: GET https://x402.coinopai.com/api/kronos/futures/funding?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kronos-perpetual-futures-funding-rate-market-data-8d206997
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Sp2ansNFi0tmHWd9w3SQy

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 kronos-perpetual-futures-funding-rate-market-data-8d206997
```

Example prompt: What are the current perpetual-futures funding rates for BTC and ETH — including who pays whom, whether either side looks crowded, and the annualized rate — pulled from Kraken Futures and Hyperliquid?

## When to prefer this

Choose this endpoint when you need a cross-venue consensus view of perpetual futures funding rates, crowding signals, and carry costs for the five major crypto assets (BTC, ETH, SOL, XRP, ADA) in a single call. It is especially valuable before entering or sizing a leveraged position, pricing a carry trade, or detecting one-sided crowding. Prefer it over raw exchange APIs when you want normalized, multi-venue aggregation with pre-computed annualized rates and crowding labels rather than raw tick data.

## Known failure modes

- Venue errors array populated if Kraken Futures or Hyperliquid is unreachable — partial data returned for available venues
- Stale data returned if cache refresh fails — fetched_at timestamp indicates data age
- Invalid symbol query param returns error or falls back to all symbols
- Payment failure (non-2xx from x402 layer) if USDC payment of $0.02 is not properly handled
- Rate limiting or timeouts from upstream venues may produce incomplete open interest or volume fields

## How this service works

Returns live perpetual-futures funding rates, mark and index price, open interest, and 24h volume for BTC, ETH, SOL, XRP, and ADA from Kraken Futures and Hyperliquid, plus a per-symbol consensus with 8h and annualized funding, who pays whom, and a LONG_CROWDED / SHORT_CROWDED / BALANCED crowding label — use it to price carry or spot a crowded side before taking a leveraged position. Cached 5 minutes.

## Output

A JSON object keyed by symbol (BTC, ETH, SOL, XRP, ADA), each containing mark price, index price, open interest, 24h volume, per-venue funding rates from Kraken Futures and Hyperliquid, a consensus funding rate with 8h and annualized values, a 'who pays whom' indicator, and a crowding label (LONG_CROWDED / SHORT_CROWDED / BALANCED). Also includes a fetched_at timestamp and any venue_errors. Data is cached for 5 minutes.

## 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": {
      "symbol": {
       "type": "string",
       "description": "Optional single symbol; omit for all five"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "symbols": {
       "type": "object"
      },
      "fetched_at": {
       "type": "string"
      },
      "venue_errors": {
       "type": "array"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/kronos-perpetual-futures-funding-rate-market-data-8d206997/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.coinopai.com](https://www.zero.xyz/host/x402.coinopai.com/llms.txt)