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Polymarket Market Side Volumes API
x402
Polymarket Market Side Volumes API is a paid API for AI agents from data-selling-api-53234eff36dc.herokuapp.com, paid per call via x402, $0.001000/call, status unknown (last checked 2026-09-15).
Returns buy and sell side volume data for a specified Polymarket prediction market
Price / call$0.001000
Success—
StatusUnknown
Output
A breakdown of buy-side and sell-side trading volumes for the specified Polymarket market, allowing comparison of directional activity and potential market imbalances.
Example use cases
Example prompt
“What are the current buy-side and sell-side volumes for the Polymarket market with ID 0x1234abcd? I want to understand whether there's a directional imbalance in trading activity.”
Technical details
Endpoint
POSThttps://data-selling-api-53234eff36dc.herokuapp.com/v1/polymarket/market-side-volumesWhen to prefer
Use this endpoint when you need directional volume data (buy vs. sell) for a specific Polymarket prediction market, particularly for analyzing market sentiment, liquidity imbalance, or trading flow. Prefer this over generic market APIs when working specifically with Polymarket data.
Side effects
- Invalid or unknown market ID returns an error or empty result
- Network timeout if Polymarket data is unavailable
- Payment failure (402) if x402 micropayment is not properly attached
- Malformed POST body returns a 400 bad request
Tags
x402
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