# Polymarket Smart Money Market Analysis

> Polymarket Smart Money Market Analysis is a paid API for AI agents from www.x402pulse.dev, paid per call via x402, $0.0875/call, status unknown (last checked 2026-10-12).

Returns the biggest holders on each side of a Polymarket market, each scored for skill (edge, win rate, ROI), plus which way skilled money leans and whether it agrees with the market's implied odds.

## Facts

- Endpoint: GET https://www.x402pulse.dev/v1/smart-money?utm_source=zero.xyz
- Price: $0.0875/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polymarket-smart-money-market-analysis-adb236f6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0IyOcj07iVWTZSimhhLd1

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-smart-money-market-analysis-adb236f6
```

Example prompt: Look up the smart money breakdown on this Polymarket market — https://polymarket.com/event/us-recession-2025 — and tell me who the biggest skilled traders are on each side, how their win rates compare, and whether the sharp money is aligned with the current odds.

## When to prefer this

Use this endpoint when you need a per-market deep-dive into which specific skilled traders are holding positions and how their credentials stack up, rather than a broad scan of disagreements across many markets or a feed of recent large trades. It is the right choice when a user has a specific market in mind and wants to understand the skill-weighted sentiment and alignment with current odds for that exact market.

## Known failure modes

- Invalid or unrecognized market URL/slug/condition ID returns an error
- Market with insufficient trading history may yield incomplete skill scores
- Very new or illiquid markets may have no scoreable traders
- Payment failure (insufficient USDC) results in 402 response
- Market may have closed or resolved, returning stale or empty data

## How this service works

Polymarket smart money for one market: the biggest holders on each side, each scored for skill (edge, win rate, ROI), plus which way skilled money leans and whether it agrees with the market's odds. Accepts a market link, slug or condition ID. Data, not investment advice.

## Output

Returns the largest position holders on both the YES and NO sides of the specified Polymarket market, each annotated with a skill score (0-100), edge over the odds paid, win rate, and ROI. Also includes a directional signal showing which way skilled money collectively leans and whether that direction agrees or disagrees with the market's implied probability.

## 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": [
      "market"
     ],
     "properties": {
      "market": {
       "type": "string",
       "description": "Polymarket market URL, slug or condition ID"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "lean": {
    "share": 0.72,
    "stance": "more confident than",
    "outcome": "Yes",
    "vsMarket": 0.31,
    "marketPrice": 0.41
   },
   "sides": [],
   "summary": "Skilled holders lean Yes (72% of skill-weighted money, from 4 skilled holders), more confident than the market's 41%.",
   "outcomes": [
    {
     "name": "Yes",
     "price": 0.41
    },
    {
     "name": "No",
     "price": 0.59
    }
   ],
   "question": "Example market?"
  },
  "cached": false
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polymarket-smart-money-market-analysis-adb236f6/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)