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Perpetual Futures Funding Rates API
x402
Perpetual Futures Funding Rates API is a paid API for AI agents from funding-rates.api.klymax402.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Retrieves current perpetual futures funding rates for a given token symbol across multiple cryptocurrency exchanges
Price / call$0.001
Success—
StatusUnknown
How this service works
Get perpetual futures funding rates across exchanges
Output
Returns funding rate data for the requested token symbol across multiple exchanges, including the funding rate values and associated exchange names for perpetual futures contracts.
Example use cases
Compare ETH funding rates across exchanges
“What are the current funding rates for ETH perpetual futures across all available exchanges? I want to see which one has the highest and lowest rate right now.”
Monitor SOL perp funding rate
“Can you check the current funding rate for SOL perpetual contracts across exchanges? I'm trying to decide whether it's worth holding a long position right now.”
Find best BTC arbitrage funding opportunity
“I'm looking to run a funding rate arbitrage on Bitcoin perps — can you pull the current BTC funding rates across all exchanges so I can spot the biggest spread?”
Technical details
Endpoint
GEThttps://funding-rates.api.klymax402.com/api/ratesWhen to prefer
Use this endpoint when you need real-time or near-real-time perpetual futures funding rates for a specific cryptocurrency token across multiple exchanges. Ideal for trading bots, arbitrage strategies, or dashboards that need to monitor funding rate conditions. Best suited for single-symbol lookups by ticker (e.g. BTC, ETH, SOL).
Side effects
- Missing required 'symbol' query parameter returns a 400 or error response
- Unknown or unsupported token symbol may return empty data or an error
- Payment not included or insufficient (x402 protocol) results in a 402 Payment Required response
- Exchange data unavailable or stale data if upstream providers are down
- Rate limiting if too many requests are made in a short window
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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