# BlockRun.AI Polymarket Top Holders

> BlockRun.AI Polymarket Top Holders is a paid API for AI agents from blockrun.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Returns the top holders for a specific Polymarket prediction market, ranked by position size

## Facts

- Endpoint: GET https://blockrun.ai/api/v1/pm/polymarket/market/0xd6591e966aebf061547ef34cdf3494ed318969887c8b7fb53f10ed5d5461a547/top-holders
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockrun-ai-fb250c4c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Zu1oAkWzlAAYAU5xWwYbH

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 blockrun-ai-fb250c4c
```

Example prompt: Show me the top holders ranked by position size for Polymarket market 0xd6591e966aebf061547ef34cdf3494ed318969887c8b7fb53f10ed5d5461a547 — I want to see which wallets have the biggest positions.

## When to prefer this

Use this endpoint when you need on-chain holder distribution data for a specific Polymarket prediction market — particularly to identify whale positions, analyze market concentration, or monitor large traders. Prefer this over generic blockchain explorers when you want pre-ranked, Polymarket-specific position data without manual on-chain parsing.

## Known failure modes

- Invalid or unrecognized market contract address returns empty or error response
- Market not tracked by BlockRun.AI returns no data
- Response may be truncated for markets with very large holder sets (originalSize indicates full payload size)
- Rate limiting or payment failure returns 402 or 429 error

## How this service works

Returns the top token holders for a specific Polymarket market.

## Output

A ranked list of wallet addresses holding positions in the specified Polymarket market, ordered by position size, including share amounts and related position metadata for each top holder.

## Example request

```json
{
 "input": {
  "body": {}
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "query": {
     "type": "object",
     "required": [],
     "properties": {}
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "example": {
     "type": "object",
     "properties": {
      "data": {
       "type": "object"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockrun-ai-fb250c4c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from blockrun.ai](https://www.zero.xyz/host/blockrun.ai/llms.txt)