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x402pulse Polymarket Whale Trades
x402
x402pulse Polymarket Whale Trades is a paid API for AI agents from www.x402pulse.dev, paid per call via x402, $0.0175/call, status unknown (last checked 2026-10-12).
Returns the largest recent Polymarket trades above a user-specified USD size, with trader name, outcome, price, and trade size, excluding short-term crypto markets.
Price / call$0.0175
Success—
StatusUnknown
How this service works
Polymarket whale trades: the largest recent buys and sells across all markets above a size you choose, with trader name, outcome, price and USD size. 5- and 15-minute crypto markets filtered out. Pair with /v1/wallet to check whether a whale is any good.
Output
A list of up to 50 of the largest recent Polymarket trades, each including trader name, market, outcome, price, and USD trade size, excluding 5- and 15-minute crypto markets. Results are ordered by trade size descending.
Example use cases
Spotting whale conviction before an event
“Pull up the 25 largest Polymarket trades above $10,000 — I want to see if any whales are loading up on a specific outcome before tonight's announcement.”
Vetting a specific whale trader
“Get me the 10 biggest recent Polymarket trades over $2,000 and flag the trader names so I can check each one against their skill score to see if these are smart-money moves.”
Monitoring unusual market activity
“Every 10 minutes, show me the top 15 Polymarket trades above $15,000 so I can detect if any whale is suddenly moving big money on a single outcome.”
Technical details
Endpoint
GEThttps://www.x402pulse.dev/v1/whales?utm_source=zero.xyzWhen to prefer
Use this endpoint when you want to identify large, informed trades on Polymarket specifically — not aggregated prediction market data. It is ideal for surfacing smart-money signals, tracking whale sentiment, or pairing with the /v1/wallet endpoint to evaluate whether a whale trader has a strong track record. Prefer this over generic market-data APIs when you need trader-level attribution and USD-denominated trade sizes with outcome context.
Side effects
- No trades found above the specified minimum size — reduce the min parameter
- limit out of range (must be 1–50) — returns validation error
- Missing or malformed query parameters — returns 400 error
- Payment failure or insufficient USDC — returns 402 Payment Required
- Service temporarily unavailable — returns 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"minUsd": 1000,
"trades": [
{
"usd": 12400,
"name": "Theo4",
"side": "BUY",
"slug": "example-market",
"time": "2026-10-01T12:00:00.000Z",
"price": 0.62,
"market": "Example market?",
"wallet": "0x56687bf447db6ffa42ffe2204a05edaa20f55839",
"outcome": "Yes"
}
]
},
"cached": false
}
}Tags
x402
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