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FundingFeed — Cross-Exchange Perpetual Funding Rate & Open Interest Aggregator
x402
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 major crypto exchanges (OKX, Bybit, Gate.io, HTX, Hyperliquid, BingX, Bitget, Kraken, Coinbase, MEXC) for BTC, ETH, and SOL in a single call
Price / call$0.005
Success—
StatusUnknown
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 JSON object with: per-venue current funding rates, min/max/mean annualized funding, cross-venue funding arbitrage spread, next funding timestamp per venue, total open interest in USD with per-venue breakdown, real-time best bid/ask across venues, and (for the /tempo endpoint) Tempo chain wallet activity including 7-day transfer volume, inbound/outbound counts, distinct counterparties, balances, and an activity score heuristic.
Example use cases
Cash-and-carry strategy timing
“Show me the annualized funding rate spread for ETH across all venues right now — I want to identify the best long/short pair for a cash-and-carry and see when the next funding event hits on each exchange.”
Crowded positioning detection
“Check total open interest for BTC across OKX, Bybit, Hyperliquid, and the other major perp venues — I'm trying to figure out if longs are overcrowded before I put on a position.”
Best execution venue selection
“I'm about to trade SOL perpetuals — can you pull the top-of-book best bid and ask across all supported exchanges so I know which venue to route my order to for the tightest spread?”
Technical details
Endpoint
POSThttps://funding-feed.kaminariouji.workers.dev/tempo?utm_source=zero.xyzWhen to prefer
Choose FundingFeed when you need a single API call that aggregates perpetual funding rates across 10+ major exchanges simultaneously — avoiding the need to query each exchange individually. Ideal for funding arbitrage strategies, cash-and-carry sizing, crowded positioning detection, and best-execution routing. Prefer this over exchange-native APIs when cross-venue comparison is the goal. The /tempo endpoint additionally returns Tempo chain wallet activity, useful for verifying on-chain payment flow alongside funding data.
Side effects
- Upstream exchange API outage causes missing data for one or more venues
- Rate limit or payment failure returns 402 with x402 payment required
- Stale data if a venue's feed lags — check generatedAt timestamp
- Unsupported coin symbol returns empty or error response
- Network timeout from Cloudflare Worker if multiple upstream calls are slow
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"note": "Read live from Tempo's transfer index and balances API. Activity score is a transparent heuristic, not financial advice.",
"chain": "eip155:4217",
"address": "0xdb5aa553feeb2c3e3d03e8360b36fb0f7e480671",
"activity": {
"byToken": {
"USDC.e": 107
},
"inbound7d": 107,
"outbound7d": 0,
"transfers7d": 107,
"volumeUsd7d": {
"in": 1.992,
"out": 0,
"total": 1.992
},
"lastTransfer": "2026-09-23T15:39:07.000Z",
"transfers24h": 9,
"firstTransfer7d": "2026-09-16T21:06:30.000Z",
"distinctCounterparties7d": 43
},
"balances": [
{
"name": "Bridged USDC (Stargate)",
"amount": "153.575",
"symbol": "USDC.e",
"address": "0x20c000000000000000000000b9537d11c60e8b50",
"decimals": 6,
"verified": true
}
],
"chainName": "Tempo",
"generatedAt": "2026-09-23T00:00:00.000Z",
"activityScore": 84
}
}Tags
x402
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