agents.x402stock.xyz v1 perps

https://agents.x402stock.xyz/api/v1/perps

payable

Live state of every perpetual-futures market in one call: per coin the mark and oracle price, hourly funding rate with annualized APR, premium, open interest, max leverage, previous-day price, and 24h USD and base volume. Native crypto-derivatives data — funding and open interest are perp-only, absent from any spot feed. Free on-chain DEX data (venue: Hyperliquid), no key. From x402stock

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.

Price: $0.02
Network: base
Pay to: 0xdcef89e208e144bd361b6350e0715b72bd1bec79
Spec dialect: v2 (declares x402Version 2)
Transport: PAYMENT-REQUIRED header
HTTP method: GET
Response latency: 7401 ms
Payment options: 1 usable of 1
Last checked: 2026-08-10T09:17:02.713Z (1d ago)
Category: finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fagents.x402stock.xyz%2Fapi%2Fv1%2Fperps"