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Polymarket Spread
web-searchfinancial-dataprediction-marketsweathertraveldata
Polymarket Spread is a paid API for AI agents from AIsa MPP Data APIs at api.aisa.one, paid per call via MPP, $0.012/call, status unknown (last checked 2026-10-14).
Retrieves the bid-ask spread for a specific Polymarket prediction market token by token ID.
Price / call$0.012
Success—
StatusUnknown
How this service works
Retrieves the spread for a specific token ID. The spread is the difference between the best ask and best bid prices. <!-- aisa-pricing:start --> Published reference price: $0.012 USD per successful request. Account-specific pricing and final settlement may differ. <!-- aisa-pricing:end -->
Output
Returns a JSON object containing the spread as a string (e.g. '0.02'), representing the difference between the best ask and best bid prices for the specified Polymarket token.
Example use cases
Check liquidity before placing a bet
“Before I buy into this Polymarket prediction market, can you check the spread for token ID 71321050856746154452989188028916814621541765919547968739073706498304195102590 so I know how wide the bid-ask is?”
Monitor spread tightness for arbitrage
“Can you pull the current spread for Polymarket token 52114319501245915516055106046884209969926127482827954674443846427813813222426 — I want to see if it's tight enough to make an arbitrage trade worthwhile?”
Compare market efficiency across tokens
“Get me the bid-ask spread for Polymarket token ID 16678291189211314787145083999015737376658799626183230671758641503291735614088 — I'm trying to assess how efficiently this market is priced.”
Technical details
Endpoint
GEThttps://api.aisa.one/apis/v1/polymarket/spread?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need the current bid-ask spread for a specific Polymarket prediction market token and want a lightweight, single-field response. Prefer this over fetching full orderbook data when only the spread metric is needed for liquidity assessment, trading decisions, or market efficiency analysis.
Side effects
- Invalid or non-existent token_id returns an error response
- Missing required token_id parameter results in a 400 bad request
- Network timeout if Polymarket orderbook data is temporarily unavailable
- Token with no active orderbook may return a zero or null spread
- Rate limiting or payment failure may block the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| token_idrequired | string | Token ID (asset ID) |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| spreadrequired | string | Spread as a string |
Tags
web-searchfinancial-dataprediction-marketsweathertraveldatasearch
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