SiteCheck Polymarket Wallet Holdings

x402

SiteCheck Polymarket Wallet Holdings is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-16).

Returns Polymarket prediction-market wallet holdings, open positions, P&L, and portfolio value for a given EVM wallet address

Price / call$0.003

Seller volume →—

Success—

StatusUnknown

How this service works

Open positions of a Polymarket wallet (proxy wallet address): market, outcome, size, average entry price, current price, value in USDC, cash and percent PnL, plus totals of the listed positions and Polymarket's own portfolio value. The largest 500 positions are listed; truncated says when there are more. Information only, not financial advice.

Output

Returns a JSON object with the wallet address, timestamp, a list of up to 500 open positions (each with market title, slug, outcome, size, average price, current price, cash P&L, percent P&L, current value, condition ID, asset ID, and redeemable flag), aggregate totals (total value, total invested, total cash P&L, percent P&L), overall portfolio value, position count, and a truncation flag if more than 500 positions exist. Includes a data disclaimer.

Example use cases

Personal Polymarket P&L check

“What's the current P&L and total portfolio value on my Polymarket wallet 0xe9076a87c5ed90ef16e6fe6529c943baeca0cff6? Show me which markets I'm up or down on.”

Research a whale's prediction market bets

“Look up what markets wallet address 0xe9076a87c5ed90ef16e6fe6529c943baeca0cff6 is holding on Polymarket — I want to know their biggest positions and average entry prices.”

Track a specific trader's open positions

“Can you fetch all open Polymarket positions for address 0xe9076a87c5ed90ef16e6fe6529c943baeca0cff6 and tell me which ones are redeemable and how many total positions they have?”

Technical details

Endpoint

GEThttps://api.sitecheck-api.workers.dev/api/pm/wallet?utm_source=zero.xyz

When to prefer

Use this endpoint when you need detailed Polymarket prediction-market portfolio data for a specific EVM wallet — including per-market positions, P&L breakdowns, and portfolio totals. Prefer this over generic EVM balance endpoints when the user specifically asks about prediction market holdings or Polymarket activity, not general token or NFT balances.

Side effects

Missing or malformed wallet address (not 42-char 0x hex) returns a validation error
Wallet address with no Polymarket activity returns empty positions array
Upstream Polymarket Data API unavailability causes timeout or 502 error
Invalid address format (ENS names, non-EVM addresses) not supported — must be raw hex
Rate limiting or payment failure returns 402 or 429

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "source": "Polymarket Data API (data-api.polymarket.com/positions)",
    "totals": {
      "percentPnl": 13.52,
      "totalValue": 457529.18,
      "totalCashPnl": 54492.78,
      "totalInvested": 402953.08
    },
    "wallet": "0xe9076a87c5ed90ef16e6fe6529c943baeca0cff6",
    "checkedAt": "2026-10-15T18:21:05.284Z",
    "positions": [
      {
        "size": 426093.29,
        "slug": "will-there-be-no-change-in-fed-interest-rates-after-the-october-2026-meeting-20260617190324031",
        "asset": "111061902544814266207267295505639408607400625795891618462682726460921782993748",
        "title": "Will there be no change in Fed interest rates after the October 2026 meeting?",
        "cashPnl": 53267.78,
        "outcome": "Yes",
        "avgPrice": 0.6,
        "percentPnl": 20.84,
        "redeemable": false,
        "conditionId": "0xdf9bf27ee5757c55b44b8b9826ddc9ec3a8809aa3278634c45edbb7fc8f1a3e3",
        "currentPrice": 0.725,
        "currentValue": 308917.64
      },
      {
        "size": 11396.69,
        "slug": "col-haj-aja-2026-10-15-total-1pt5",
        "asset": "84757376927839303013190936432764250664947324098902262677040851915374893448849",
        "title": "HNK Hajduk Split vs. AFC Ajax: O/U 1.5",
        "cashPnl": 1856.73,
        "outcome": "Over",
        "avgPrice": 0.837,
        "percentPnl": 19.47,
        "redeemable": false,
        "conditionId": "0x74bd15fe8f1a5b161cc11fdc9dcac4fe226e6d06ed62389cba0603af7481dff7",
        "currentPrice": 1,
        "currentValue": 11390.99
      },
      {
        "size": 11701.27,
        "slug": "will-predictfun-launch-a-token-by-december-31-2026",
        "asset": "114601905620399478366872883723128209209706772729401525531940325145395181519141",
        "title": "Will Predict.fun launch a token by December 31, 2026?",
        "cashPnl": 2654.66,
        "outcome": "Yes",
        "avgPrice": 0.638,
        "percentPnl": 35.55,
        "redeemable": false,
        "conditionId": "0x95feddfb444684affe3347fbe3c5af37092a6315ba2b389dc187ad5661527d0a",
        "currentPrice": 0.865,
        "currentValue": 10121.6
      }
    ],
    "truncated": true,
    "disclaimer": "Information only, not financial advice.",
    "portfolioValue": 460688.16,
    "positionsCount": 500
  }
}

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