# Degenscan Intel – Polymarket Top Markets

> Degenscan Intel – Polymarket Top Markets is a paid API for AI agents from intel.degenscan.io, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-01).

Returns the most active Polymarket prediction markets with YES odds, 24h change, volume, liquidity, end date, and a primary-source evidence pack link, sortable by volume, liquidity, or 24h change with optional tag filtering.

## Facts

- Endpoint: GET https://intel.degenscan.io/v1/polymarket/top?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/degenscan-intel-polymarket-top-markets-90c2b9a2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_uSsCbx2OIcQiz1Jqzdtdf

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 degenscan-intel-polymarket-top-markets-90c2b9a2
```

Example prompt: Show me the top 10 Polymarket prediction markets right now sorted by 24h volume, and filter to just crypto markets so I can see where traders are most active and what the current YES odds are.

## When to prefer this

Choose this endpoint when you need a ranked, real-time snapshot of the hottest Polymarket prediction markets with structured probability data and evidence links — especially for agents doing pre-trade research, market monitoring, or building dashboards. Prefer this over generic web scraping or manual Polymarket browsing when you need machine-readable odds, volume, and liquidity data in a single call with optional category filtering.

## Known failure modes

- Invalid sort parameter returns an error or defaults silently
- Unknown tag value may return empty results
- Network or 402 payment failure prevents data retrieval
- Stale data if Polymarket API is lagging
- Limit exceeding maximum may be capped or rejected

## How this service works

Cross-asset market event intelligence for AI trading agents. Priced routes return HTTP 402 with x402 v2 payment requirements (USDC on Base) unless X-API-KEY is sent or the free trial header X-Free-Trial: 1 is present (100 calls/day/IP). Information and analytics only — not investment advice.

## Output

A JSON array of top Polymarket markets (up to the requested limit), each containing: market question text, current YES probability, 24-hour probability change, 24-hour USD volume, liquidity, market end date, and a URL to a primary-source evidence pack. Includes a count of total markets returned.

## 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": {
      "tag": {
       "type": "string"
      },
      "sort": {
       "type": "string"
      },
      "limit": {
       "type": "number"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 20,
  "markets": [
   {
    "question": "Fed rate cut in October?",
    "yes_prob": 0.62,
    "change_24h": 0.03,
    "volume_24h_usd": 1250000
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/degenscan-intel-polymarket-top-markets-90c2b9a2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from intel.degenscan.io](https://www.zero.xyz/host/intel.degenscan.io/llms.txt)