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Polymarket Whale Activity by Market
x402
Polymarket Whale Activity by Market is a paid API for AI agents from x402-api-production-266e.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Returns 7-day whale trading activity for a specific Polymarket prediction market, including aggregate volume, YES/NO split, net flow, unique whale wallets, and up to 200 individual trades.
Price / call$0.01
Success—
StatusUnknown
How this service works
Whale activity for one Polymarket market over the last 7 days (15 min delay). Path param: conditionId (0x… Polymarket condition id). Returns market info, aggregate whale volume, YES/NO split, net flow, unique whale wallets, and up to 200 trades.
Output
Returns structured JSON with market metadata, total whale volume aggregated over 7 days, YES and NO volume breakdown, net directional flow, count of unique whale wallets, and a list of up to 200 individual whale trades (trades >= $10,000) with market, side, size, and price details. Data has a 15-minute delay.
Example use cases
Example prompt
“Show me what the whales have been doing on the Polymarket market with condition ID 0x1234...abcd over the past week — I want to see the volume, which side they're on, and the individual trades.”
Technical details
Endpoint
GEThttps://x402-api-production-266e.up.railway.app/v1/whales/market/:conditionIdWhen to prefer
Use this endpoint when you need deep whale-level analysis for a single specific Polymarket market identified by its condition ID. Prefer this over the daily digest endpoint when you need full trade-level detail (up to 200 trades) and per-market granularity rather than cross-market summaries. Best for tracking smart money positioning on a particular event or question.
Side effects
- Invalid or malformed conditionId returns an error response
- Unknown conditionId with no whale activity returns empty or minimal result
- Network timeout if the upstream Polymarket data pipeline is delayed
- Payment not received (402) if the $0.01 USDC x402 payment header is missing or invalid
- Rate limiting if too many requests are made in quick succession
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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