# infinitERB Poly Whales

> infinitERB Poly Whales is a paid API for AI agents from api.infiniterb.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-01).

Returns recent large trades (whale activity) for a given prediction market, filtered by minimum USD trade size.

## Facts

- Endpoint: GET https://api.infiniterb.com/api/poly/whales?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/infiniterb-poly-whales-2860b849
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_F5YnAHxyIX51p6v6EQiLe

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 infiniterb-poly-whales-2860b849
```

Example prompt: Show me the whale trades on Polymarket market ID 'will-btc-hit-100k' — I want to see any buys or sells above $2000.

## When to prefer this

Use this endpoint when you need on-chain large-trade (whale) activity data for a specific Polymarket prediction market, filtered by a minimum USD threshold. It is ideal for agents monitoring market sentiment, detecting institutional or high-conviction moves, or tracking wallet behavior in decentralized prediction markets.

## Known failure modes

- Missing required market_id parameter returns a 400 or validation error
- Invalid or non-existent market_id may return an empty trades array or 404
- Payment failure (x402) if USDC is not provided correctly results in 402 response
- min_usd set too high may return zero trades with an empty array
- Network or upstream data source unavailability may return 5xx error

## How this service works

infinitERB: poetry, philosophy, and objects from the middle — where knowing meets unknowing, and love brings the color.

## Output

A JSON object containing a count of qualifying trades and an array of trade records, each with the side (BUY or SELL), the wallet address that made the trade, and the trade size in USD.

## 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_id"
     ],
     "properties": {
      "min_usd": {
       "type": "number",
       "description": "min trade size USD (default 1000)"
      },
      "market_id": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 3,
  "trades": [
   {
    "side": "BUY",
    "wallet": "0x..",
    "size_usd": 5000
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/infiniterb-poly-whales-2860b849/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.infiniterb.com](https://www.zero.xyz/host/api.infiniterb.com/llms.txt)