# Kronos Signals Funding Arbitrage Signal – BTC

> Kronos Signals Funding Arbitrage Signal – BTC is a paid API for AI agents from kronossignals.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Fetches real-time 8h-equivalent funding rates across 6 major venues for BTC and computes the gross and net-of-fees cross-venue funding arbitrage spread, with actionability label and per-venue breakdown.

## Facts

- Endpoint: GET https://kronossignals.com/api/v1/funding-arb/btc
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kronos-signals-funding-arbitrage-signal-btc-37f4a23c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ooiihPi8BY3cUsotwjLTc

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-signals-funding-arbitrage-signal-btc-37f4a23c
```

Example prompt: What's the current BTC funding rate arbitrage spread across Binance, OKX, Bybit, and Hyperliquid — is there a net-of-fees opportunity worth acting on right now, and which venues should I short and long?

## When to prefer this

Use this endpoint when you need a real-time, fee-adjusted, cross-venue funding rate arbitrage signal specifically for BTC perpetual futures. It aggregates 6 major venues in one call and provides a net-of-fees actionability verdict, saving you from querying each exchange individually and computing the spread yourself. Prefer this over building your own aggregator when speed and simplicity matter, or when you want a pre-computed annualized yield signal for automated strategy decisions.

## Known failure modes

- One or more venue APIs unavailable — partial data returned or endpoint errors
- Payment not processed via x402 — 402 Payment Required response
- Rate limit exceeded on upstream exchange APIs — stale or missing rates
- Asset not among the 16 supported — may return 404 or empty result
- Supabase write failure (fire-and-forget, does not affect response)

## How this service works

Cross-venue funding arbitrage signal from real-time 8h-equivalent funding rates on Binance, OKX, Bybit, KuCoin, Bitget and Hyperliquid. Returns the gross and net-of-fees spread between the best short venue and best long venue (gross_spread_bps, net_spread_bps after a 20 bps round-trip fee estimate), spread_8h_normalized, venues_count, per-venue rates with funding_interval_hours, annualized_pct, and an actionability label. All 17 assets. $0.02 USDC via x402.

## Output

Returns gross_spread_bps (raw spread between highest and lowest funding rate venues), net_spread_bps (after a 20 bps round-trip fee estimate), annualized_pct (the net spread expressed as annualized yield), an actionability label indicating whether the trade is worth executing, and a per-venue breakdown of 8h-equivalent funding rates for all 6 venues, identifying the best short and best long venue.

## 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"
    },
    "pathParams": {
     "type": "object"
    },
    "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/kronos-signals-funding-arbitrage-signal-btc-37f4a23c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kronossignals.com](https://www.zero.xyz/host/kronossignals.com/llms.txt)