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BYTE Library x402 Gateway – Perpetual Funding Rates Feed
x402
BYTE Library x402 Gateway – Perpetual Funding Rates Feed is a paid API for AI agents from x402.payperbyte.io, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Returns cryptographically signed, EIP-712 provenance-stamped perpetual futures funding rate data for crypto markets, paid per call in USDC via x402
Price / call$0.02
Success—
StatusUnknown
How this service works
Cross-venue perpetual-swap funding rates (Hyperliquid, dYdX, Aevo live; GMX + Vertex coming v1.1) + spread. Annualized.
Output
A JSON payload containing the 'perp-funding' feed data, cryptographically signed and stamped with an EIP-712 PayloadAttestation for provenance verification. The response includes current perpetual futures funding rate data for crypto markets. Each payload is verifiable on-chain and priced at $0.007325 USDC per call, settled on Base (eip155:8453).
Example use cases
Example prompt
“Fetch me the current perpetual futures funding rates from the BYTE Library provenance feed — I want the cryptographically signed, EIP-712 attested payload and I'll pay in USDC via x402 on Base.”
Technical details
Endpoint
GEThttps://x402.payperbyte.io/feeds/perp-fundingWhen to prefer
Choose this endpoint when you need cryptographically signed, provenance-verified perpetual futures funding rate data and can pay per call in USDC without managing API keys. Ideal for DeFi agents, on-chain trading bots, or risk systems that need attestable data provenance via EIP-712. Prefer this over traditional REST APIs when trustless data verification and wallet-based authentication matter.
Side effects
- Insufficient USDC payment or missing x402 payment header returns 402 Payment Required
- Invalid or expired payment token results in authentication failure
- Network congestion on Base chain may delay payment settlement
- Feed temporarily unavailable returns 503 or timeout
- Malformed request with invalid properties returns 400 Bad Request
Input
{
"properties": "funding_rates,mark_price,index_price"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"data": {
"v": 1,
"ts": "2026-06-12T04:48:41Z",
"feed": "perp-funding",
"assets": [
{
"asset": "BTC",
"spread": {
"max": 0.1095,
"min": 0.038097,
"spread": 0.071403
},
"rates_apr": {
"aevo": 0.0438,
"dydx": 0.038097,
"hyperliquid": 0.1095
},
"rate_basis": "annualized fraction (e.g. 0.0146 = 1.46% APR)"
},
{
"asset": "ETH",
"spread": {
"max": 0.109637,
"min": -0.05256,
"spread": 0.162197
},
"rates_apr": {
"aevo": -0.05256,
"dydx": 0.109637,
"hyperliquid": -0.030416
},
"rate_basis": "annualized fraction (e.g. 0.0146 = 1.46% APR)"
},
{
"asset": "SOL",
"spread": {
"max": 0,
"min": -0.11388,
"spread": 0.11388
},
"rates_apr": {
"aevo": -0.11388,
"dydx": 0,
"hyperliquid": -0.098411
},
"rate_basis": "annualized fraction (e.g. 0.0146 = 1.46% APR)"
},
{
"asset": "ARB",
"spread": {
"max": 0.0438,
"min": -0.126445,
"spread": 0.170245
},
"rates_apr": {
"aevo": 0.0438,
"dydx": 0,
"hyperliquid": -0.126445
},
"rate_basis": "annualized fraction (e.g. 0.0146 = 1.46% APR)"
},
{
"asset": "AVAX",
"spread": {
"max": 0.092127,
"min": 0,
"spread": 0.092127
},
"rates_apr": {
"aevo": 0.07884,
"dydx": 0,
"hyperliquid": 0.092127
},
"rate_basis": "annualized fraction (e.g. 0.0146 = 1.46% APR)"
}
],
"disclaimer": "Not financial advice. For informational and educational purposes only. Do not rely on this data for trading or investment decisions without independent verification.",
"venues_active": [
"aevo",
"dydx",
"hyperliquid"
],
"venues_configured": [
"hyperliquid",
"dydx",
"aevo",
"vertex",
"gmx"
],
"disclaimer_category": "financial"
},
"feed": "perp-funding",
"source": "byte-library-broadcast",
"txHash": "0x7addd10b59c911a973fb89a2fccf4f227a50c9f7c8b91f43b5d04a84cf07e319",
"publisher": "0x533f447c2b82cf903e8189778636ef96c652c892",
"timestamp": "2026-06-12T04:48:44Z",
"payloadHash": "0x301c31c4e304f96e919bbc30c2d792a4d1830ed70f3114a6f120dc32ac60dacd",
"payloadBytes": 1387
}Tags
x402
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