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Uniswap Bid-Ask Spread Check
x402
Uniswap Bid-Ask Spread Check is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).
Calculates the latest absolute and percentage bid-ask spread for Uniswap (UNI-USD) or other Coinbase USD market pairs using Coinbase Exchange public market data.
Price / call$0.01
Success—
StatusUnknown
How this service works
Uniswap Bid-ask spread check: Calculate the latest absolute and percentage bid-ask spread. Coinbase Exchange public USD market data; not investment advice.
Output
Returns the latest absolute bid-ask spread (in USD) and the percentage bid-ask spread for the requested Coinbase USD trading pair, derived from Coinbase Exchange public market data. Intended for informational market research; not investment advice.
Example use cases
Pre-trade liquidity check for UNI
“Before I buy some UNI, can you check the current bid-ask spread on UNI-USD so I know how much slippage I might be dealing with?”
Comparing spread across crypto pairs
“Pull the bid-ask spread for ETH-USD on Coinbase so I can compare it against the UNI-USD spread and figure out which market is tighter right now.”
Monitoring spread for trade timing
“Check the UNI-USD bid-ask spread — I want to know if it's unusually wide right now before I decide whether to execute my trade.”
Technical details
Endpoint
POSThttps://market.datapackvibe.com/x402/demand-market-uniswap-spread-check?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need real-time bid-ask spread data specifically for Coinbase USD-denominated crypto pairs, particularly UNI-USD, and want both absolute and percentage spread metrics in a single call. Prefer this over raw order-book endpoints when you need a quick, pre-computed spread figure for liquidity assessment without having to parse full order book data yourself.
Side effects
- Invalid product ID returns an error or empty response
- Unsupported trading pair (non-USD or non-Coinbase pair) may fail or return unexpected results
- Payment failure ($0.01 USDC) results in a 402 response before data is returned
- Temporary Coinbase Exchange data unavailability may yield stale or missing spread values
- Malformed request body or missing required fields may cause a 400 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| product | string | Coinbase USD product ID; defaults to UNI-USD. |
Tags
x402
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