# FundingFeed — Cross-Exchange Perpetual Funding Rate & Open Interest Aggregator

> FundingFeed — Cross-Exchange Perpetual Funding Rate & Open Interest Aggregator is a paid API for AI agents from funding-feed.kaminariouji.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-02).

Aggregates live perpetual funding rates, open interest, and best bid/ask across 10+ crypto exchanges (OKX, Bybit, Gate.io, HTX, Hyperliquid, BingX, Bitget, Kraken, Coinbase, MEXC) for BTC, ETH, and SOL in a single call

## Facts

- Endpoint: POST https://funding-feed.kaminariouji.workers.dev/ip?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fundingfeed-cross-exchange-perpetual-funding-rate-open-interest-e1b8cec9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QHxYWhjNyvexW51AViI0F

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 fundingfeed-cross-exchange-perpetual-funding-rate-open-interest-e1b8cec9 -d '<json body>'
```

Example prompt: Pull the live cross-exchange funding rates and open interest for BTC across OKX, Bybit, Hyperliquid, and the other major perp venues — I want to see the annualized funding spread and best bid/ask so I can evaluate a cash-and-carry arb right now.

## When to prefer this

Choose this endpoint when you need a single aggregated view of perpetual funding rates, open interest, and best execution across 10+ major crypto exchanges simultaneously — particularly for funding arbitrage analysis, cash-and-carry strategy evaluation, or best-venue routing for BTC, ETH, or SOL. Prefer this over querying individual exchange APIs when cross-venue comparison and spread analysis are the primary goal.

## Known failure modes

- Upstream exchange API downtime may cause missing per-venue data
- Rate limiting or payment failure returns 402 if USDC payment not processed
- Truncated or stale data if a venue's feed lags
- Response may omit certain venues if they are temporarily unavailable
- Invalid coin symbol returns error or empty result

## How this service works

Cross-exchange perpetual funding rate arbitrage, open interest, and best-execution for BTC/ETH/SOL. Aggregates live perpetual venues (OKX, Bybit, Gate.io, HTX, Hyperliquid, BingX, Bitget, Kraken, Coinbase, MEXC) into one call: current funding rate per venue, min/max/mean annualized funding, the cross-venue funding arbitrage spread, next funding time per venue, total open interest in USD with a per-venue breakdown, and real top-of-book best bid/ask. Use it to find the best funding rate arbitrage opportunity across exchanges, compare funding rates between Bybit and OKX for a specific coin, check annualized carry cost for a long/short funding arb, identify which exchange has the most negative funding rate right now, scan for cross-venue funding divergences in crypto perpetuals, monitor funding spreads to time a cash-and-carry strategy, detect crowded positioning from open interest, and route orders to the venue with the best price. Paid per call: 0.005 USDC on Base, Polygon, Solana or Tempo (MPP, no gas). FIRST CALL FREE per wallet — send header "X-WALLET: 0x<your Base address>" and get the full feed with no payment. Try it before you pay.

## Output

Returns a structured JSON object containing: current funding rate per venue, annualized funding rates (min, max, mean), the cross-venue funding arbitrage spread, next funding timestamp per venue, total open interest in USD with a per-venue breakdown, and real top-of-book best bid/ask prices across all aggregated perpetual exchanges for the requested coin.

## 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",
      "POST"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "additionalProperties": true
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ip": "8.8.8.8",
  "asn": 15169,
  "isp": "Google LLC",
  "city": "San Jose",
  "flag": "🇺🇸",
  "note": "Resolved live from a public IP registry. No API key required.",
  "type": "IPv4",
  "is_eu": false,
  "domain": "google.com",
  "postal": "95025",
  "region": "California",
  "country": "United States",
  "latitude": 37.3393939,
  "timezone": "America/Los_Angeles",
  "continent": "North America",
  "longitude": -121.8949553,
  "utc_offset": "-07:00",
  "calling_code": "1",
  "country_code": "US",
  "organization": "Google LLC"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fundingfeed-cross-exchange-perpetual-funding-rate-open-interest-e1b8cec9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from funding-feed.kaminariouji.workers.dev](https://www.zero.xyz/host/funding-feed.kaminariouji.workers.dev/llms.txt)