# Polymarket Wallet Trader Scorecard

> Polymarket Wallet Trader Scorecard is a paid API for AI agents from www.x402pulse.dev, paid per call via x402, $0.035/call, status unknown (last checked 2026-10-12).

Returns a comprehensive trading scorecard for a Polymarket wallet address, including skill score, edge over implied odds, win rate vs. implied win rate, ROI, realized PnL, specialties, and largest open positions based on the last 200 finished bets.

## Facts

- Endpoint: GET https://www.x402pulse.dev/v1/wallet?utm_source=zero.xyz
- Price: $0.035/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polymarket-wallet-trader-scorecard-b0946bfc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ijRLMmSrUbOA1j2bXZ7nk

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 polymarket-wallet-trader-scorecard-b0946bfc
```

Example prompt: Can you pull up the full trader scorecard for Polymarket wallet 0x1234...abcd — I want to see their skill score, edge over the odds, win rate vs implied win rate, ROI, and what markets they specialize in?

## When to prefer this

Use this endpoint when you need a holistic skill-based evaluation of a specific Polymarket trader's historical performance — especially when you want to distinguish lucky traders from genuinely skilled ones via edge-over-odds and implied win rate comparisons. Prefer this over raw on-chain data queries when you need pre-computed analytics like skill scores, ROI, and trading specialties without doing your own statistical analysis.

## Known failure modes

- Invalid or malformed wallet address (non-0x, wrong length) — returns validation error
- Wallet address has fewer than a meaningful number of completed bets — may return sparse or unavailable scorecard
- Non-Polymarket wallet address passed — no trading history found
- Payment of 0.001 USDC not completed — 402 Payment Required response
- Rate limiting or service unavailability — 429 or 5xx response

## How this service works

Polymarket trader scorecard for any wallet: skill score (0-100), edge over the odds paid, win rate vs. the win rate the odds implied, return (ROI), realized PnL, specialty and largest open positions. Scores the latest 200 finished bets, losses included.

## Output

A structured scorecard for the queried Polymarket wallet covering: skill score (0-100), edge over the odds paid (indicating whether the trader systematically picks underpriced outcomes), win rate versus the win rate implied by the odds, ROI percentage, realized PnL in USD, trading specialty (the market categories where the wallet outperforms), and a list of the wallet's largest current open positions. Based on the most recent 200 completed bets, losses included.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "pattern": "^0x[a-fA-F0-9]{40}$",
       "description": "Polymarket proxy wallet address"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "name": "Theo4",
   "score": {
    "roi": 0.31,
    "bets": 120,
    "edge": 0.11,
    "label": "Sharp",
    "skill": 78,
    "winRate": 0.63,
    "specialty": "politics",
    "realizedPnlUsd": 2205393,
    "expectedWinRate": 0.52
   },
   "address": "0x56687bf447db6ffa42ffe2204a05edaa20f55839",
   "openPositions": []
  },
  "cached": false
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polymarket-wallet-trader-scorecard-b0946bfc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.x402pulse.dev](https://www.zero.xyz/host/www.x402pulse.dev/llms.txt)