# Polymarket Top Movers by Price Delta

> Polymarket Top Movers by Price Delta 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 2026-09-13).

Returns the top-20 Polymarket markets with the largest YES-price movements over a 1h, 6h, or 24h window, ranked by absolute price delta, derived from trade prints with whale volume breakdowns.

## Facts

- Endpoint: GET https://x402-api-production-266e.up.railway.app/v1/markets/movers
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polymarket-top-movers-by-price-delta-52a17aea
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GlKuw2SW7l-ER31iMF74j

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-top-movers-by-price-delta-52a17aea
```

Example prompt: What are the top Polymarket markets moving the most in the last hour — show me the biggest YES-price swings with any whale volume over $10k included?

## When to prefer this

Use this endpoint when you need a ranked view of which Polymarket markets are experiencing the most significant repricing activity over a specific time horizon. Ideal for identifying breaking-news driven markets, momentum plays, or unusual activity. Prefer this over the whale digest endpoint when you want price-movement ranking rather than volume ranking, and over the raw whale trades endpoint when you need a market-level aggregation rather than individual trade records.

## Known failure modes

- Invalid window param (not 1h/6h/24h) returns error
- No markets with >= 2 prints in window returns empty list
- Payment not attached or insufficient USDC returns 402
- Data delay up to 15 minutes means very recent prints may be missing
- Markets with low liquidity may be absent due to print threshold requirement

## How this service works

Returns the biggest market movers for tracked assets.

## Output

A ranked list of up to 20 Polymarket markets ordered by absolute YES-price delta within the requested window. Each entry includes condition_id, market title, price_before, price_now, delta, number of trade prints in window, total volume in USD, and whale volume (trades >= $10,000) in USD. Data has a 15-minute delay and only includes markets with at least 2 trade prints in the window.

## 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": [
        "1h",
        "6h",
        "24h"
       ],
       "type": "string",
       "description": "Move window (default 6h)"
      }
     }
    }
   },
   "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/polymarket-top-movers-by-price-delta-52a17aea/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)