# SiteCheck Polymarket Wallet Activity

> SiteCheck Polymarket Wallet Activity 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 2026-10-29).

Fetches recent trading activity (buys/sells) for a given Polymarket wallet address

## Facts

- Endpoint: GET https://api.sitecheck-api.workers.dev/api/pm/activity?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitecheck-polymarket-wallet-activity-eb8a96a2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_20rds2v-OUQsLhBo2de7g

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability sitecheck-polymarket-wallet-activity-eb8a96a2
```

Example prompt: Can you pull up the last 20 trades for the Polymarket wallet 0xe9076a87c5ed90ef16e6fe6529c943baeca0cff6 and tell me what markets they've been betting on?

## When to prefer this

Use this endpoint when you need on-chain Polymarket trading history for a specific wallet, including trade direction, prices, USDC amounts, and market titles. Prefer this over generic blockchain explorers when you want Polymarket-structured, human-readable market data (titles, outcomes, slugs) rather than raw transaction data.

## Known failure modes

- Invalid or malformed wallet address (not 42-char 0x hex) returns an error
- Wallet has no Polymarket activity — returns empty activity array
- limit parameter exceeds 100 — capped or error returned
- Polymarket Data API upstream unavailable — upstream fetch failure
- Non-EVM address format causes a validation error

## How this service works

Fetches recent trading and on-chain lifecycle activity (trades, splits, merges, redemptions) for a Polymarket user or proxy wallet address. Includes market question titles, action types, amounts, and transaction hashes. Limit up to 100 items. Information only, not financial advice.

## Output

Returns a JSON object containing the queried wallet address, a list of trade activity records (each with side, size, slug, type, price, title, outcome, USDC size, timestamp, and transaction hash), total activity count, a checkedAt timestamp, and a disclaimer note. Sourced from the Polymarket Data API.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "wallet"
     ],
     "properties": {
      "limit": {
       "type": "string",
       "description": "Maximum activity records to return (max 100)"
      },
      "wallet": {
       "type": "string",
       "description": "Polymarket EVM proxy or user address (0x hex, 42 chars)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "source": "Polymarket Data API (data-api.polymarket.com/activity)",
  "wallet": "0xe9076a87c5ed90ef16e6fe6529c943baeca0cff6",
  "activity": [
   {
    "side": "BUY",
    "size": 27.2,
    "slug": "uel-olm-oly-2026-10-15-olm",
    "type": "TRADE",
    "price": 0.35,
    "title": "Will Olympique de Marseille win on 2026-10-15?",
    "outcome": "Yes",
    "usdcSize": 9.83,
    "timestamp": "2026-10-15T18:20:46.000Z",
    "transactionHash": "0xab0d91d7cf17712b0767b9add0704fd5f04a98c83eefd35a5264b6eef3bab213"
   },
   {
    "side": "BUY",
    "size": 3.65,
    "slug": "uel-lyo-cry-2026-10-15-total-3pt5",
    "type": "TRADE",
    "price": 0.52,
    "title": "Olympique Lyonnais vs. Crystal Palace FC: O/U 3.5",
    "outcome": "Over",
    "usdcSize": 1.95,
    "timestamp": "2026-10-15T18:20:41.000Z",
    "transactionHash": "0x62fa28e815eeca273af12b7151b2dfffcd7f27a4cdd49f77ed07b1c2629bef58"
   },
   {
    "side": "SELL",
    "size": 7.12,
    "slug": "dota2-playti-skyrea-2026-10-15-game1",
    "type": "TRADE",
    "price": 0.999,
    "title": "Dota 2: PlayTime vs Skyreavers - Game 1 Winner",
    "outcome": "Skyreavers",
    "usdcSize": 7.11,
    "timestamp": "2026-10-15T18:20:17.000Z",
    "transactionHash": "0x40de41cf50c5ab486fa036901f9ca81d675d942588e61cfe1cee8ecc25a668fe"
   }
  ],
  "checkedAt": "2026-10-15T18:21:04.594Z",
  "disclaimer": "Information only, not financial advice.",
  "activityCount": 10
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-polymarket-wallet-activity-eb8a96a2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.sitecheck-api.workers.dev](https://www.zero.xyz/host/api.sitecheck-api.workers.dev/llms.txt)