# Predge Biggest Bets - Top Trades by Notional

> Predge Biggest Bets - Top Trades by Notional is a paid API for AI agents from x402-api-production-266e.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Returns the top 20 largest single trades by USD notional across all Polymarket markets within a 24h or 7d lookback window (15-minute delay), sorted by size descending.

## Facts

- Endpoint: GET https://x402-api-production-266e.up.railway.app/v1/bets/biggest
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/predge-biggest-bets-top-trades-by-notional-231d1477
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_60lc9e12g40NvrtTEte2a

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 predge-biggest-bets-top-trades-by-notional-231d1477
```

Example prompt: Show me the 20 biggest single trades by dollar amount across all Polymarket markets from the past 7 days — I want to see where the largest bets are going.

## When to prefer this

Use this endpoint when you need a cross-market view of the single largest trades by notional value on Polymarket, rather than per-market or per-wallet analysis. Prefer this over /whales/latest when you specifically want size-ranked ordering rather than recency, and over market-specific endpoints when you want to survey all markets at once.

## Known failure modes

- Invalid window parameter (not '24h' or '7d') returns a 400 or validation error
- Payment failure or insufficient USDC balance returns a 402 error
- Service unavailability or railway deployment downtime returns a 503
- Empty result set if no qualifying trades exist in the window (unlikely for 24h)
- Stale data if Polymarket data pipeline is delayed beyond the 15-minute window

## How this service works

Returns the biggest bets from the latest betting activity feed.

## Output

A list of up to 20 trade records sorted by size_usd descending, each including market info, trade side, notional size in USD, and outcome_verified: false (live/unresolved flow only). Data has a 15-minute delay.

## 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",
     "properties": {
      "window": {
       "enum": [
        "24h",
        "7d"
       ],
       "type": "string",
       "description": "Lookback window (default 24h)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/predge-biggest-bets-top-trades-by-notional-231d1477/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-api-production-266e.up.railway.app](https://www.zero.xyz/host/x402-api-production-266e.up.railway.app/llms.txt)