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GraphAdvocate Uniswap/Hyperliquid Cross-Venue Basis Calculator
x402
GraphAdvocate Uniswap/Hyperliquid Cross-Venue Basis Calculator is a paid API for AI agents from graphadvocate.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Computes the spot vs perpetual basis percentage by joining Uniswap on-chain spot price (via subgraph) against Hyperliquid perp last-fill price, returning basis_pct and a directional signal.
Price / call$0.05
Success—
StatusUnknown
How this service works
Cross-venue SPOT vs PERP basis. POST {coin, chain?}. Joins Uniswap spot (on-chain, from the subgraph) against the Hyperliquid perp last-fill price and returns basis_pct + a signal (perp_premium / perp_discount / aligned). A JOIN a single-venue passthrough structurally cannot return. Positive basis means longs are crowded and typically paying funding.
Output
Returns basis_pct (a percentage showing how far the Hyperliquid perp price deviates from the Uniswap on-chain spot price) and a signal enum: 'perp_premium' (perp above spot, longs likely crowded and paying funding), 'perp_discount' (perp below spot), or 'aligned' (prices in sync). Also includes the raw spot and perp prices used in the calculation.
Example use cases
Funding pressure check before longing
“Before I open a long on BTC on Hyperliquid, can you check the cross-venue basis against Uniswap spot and tell me whether the perp is at a premium or if longs are already crowded?”
Basis arbitrage opportunity scan
“Check the Uniswap vs Hyperliquid basis for ARB on Arbitrum — I want to see the basis percentage and whether there's a perp premium I could fade.”
DeFi token perp crowding alert
“What's the basis signal for LINK right now between Uniswap spot and Hyperliquid perps? I want to know if the perp is aligned with spot or showing a premium or discount.”
Technical details
Endpoint
POSThttps://graphadvocate.com/uniswap/basisWhen to prefer
Choose this endpoint when you need a cross-venue basis signal that requires joining two structurally different data sources: Uniswap on-chain liquidity (via The Graph subgraph) and Hyperliquid perpetual last-fill prices. It is the only endpoint that returns a normalized basis_pct and a directional crowding signal (perp_premium / perp_discount / aligned) in a single call. Prefer this over single-venue endpoints when you need to detect funding pressure, perp crowding, or basis arbitrage opportunities between DeFi spot and centralized-style perp markets.
Side effects
- Coin not found on Uniswap subgraph — no liquidity pool or subgraph data unavailable
- Coin not listed on Hyperliquid perps — returns error or null perp price
- Chain parameter unsupported or subgraph endpoint unresponsive
- Stale last-fill price if Hyperliquid market is illiquid — basis_pct may be misleading
- Payment of $0.05 USDC not processed — request rejected with payment required error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| coin | string | |
| chain | string |
Output
Schema · Response
{
"type": "json",
"example": {
"coin": "BTC",
"perp": {
"venue": "hyperliquid",
"price_usd": 64826
},
"spot": {
"venue": "uniswap-v3",
"price_usd": 64588.86
},
"signal": "perp_premium",
"basis_pct": 0.3672
}
}Tags
x402
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