# Polymarket Real-Time Trade Stream with Market Summaries

> Polymarket Real-Time Trade Stream with Market Summaries is a paid API for AI agents from polynews.news, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Returns a rolling 2-hour real-time stream of Polymarket trades ($500+ in value) with market-level summaries and price/volume data

## Facts

- Endpoint: GET https://polynews.news/api/v1/feed
- 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/polynews-news-3751e518
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ai1Mj-p1rGmyaLfoOhqJz

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 polynews-news-3751e518
```

Example prompt: Pull the latest Polymarket trade stream — show me the 50 most recent trades above $500 from the last 2 hours along with the market summaries.

## When to prefer this

Use this endpoint when you need raw, real-time trade-level data from Polymarket with a 2-hour rolling window focused on significant trades ($500+). Prefer this over market context or news endpoints when you want pure trade flow and volume data rather than AI-generated analysis or news correlation.

## Known failure modes

- No trades available if market activity is low in the rolling window
- Invalid limit or minValue query parameter types return schema validation errors
- Payment failure (402) if USDC micropayment is not completed via x402 protocol
- Empty trades array if no trades exceed the specified minValue threshold
- Timeout or stale data if upstream Polymarket data source is unavailable

## How this service works

Real-time trade stream with market summaries (2hr rolling window, $500+ trades)

## Output

A JSON object containing an array of recent trades (each with side, price, amount, market ID, and timestamp) and an array of market summaries, covering trades above $500 in a 2-hour rolling window.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "limit": "10",
   "minValue": "500"
  }
 }
}
```

## 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": {
      "limit": {
       "type": "string"
      },
      "minValue": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "data": {
       "type": "object",
       "properties": {
        "trades": {
         "type": "array",
         "items": {
          "type": "object",
          "properties": {
           "side": {
            "type": "string"
           },
           "price": {
            "type": "number"
           },
           "amount": {
            "type": "number"
           },
           "market": {
            "type": "string"
           },
           "timestamp": {
            "type": "number"
           }
          }
         }
        },
        "summary": {
         "type": "object",
         "properties": {
          "pollCount": {
           "type": "number"
          },
          "newestTimestamp": {
           "type": "number"
          },
          "oldestTimestamp": {
           "type": "number"
          },
          "totalAccumulated": {
           "type": "number"
          },
          "accumulatorUptime": {
           "type": "number",
           "description": "Seconds"
          }
         },
         "description": "Accumulator stats"
        },
        "marketSummaries": {
         "type": "array"
        }
       }
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "trades": [
    {
     "side": "BUY",
     "price": 0.32,
     "amount": 2400,
     "market": "Democratic Presidential Nominee 2028",
     "wallet": "0xa1b2...c3d4",
     "outcome": "Gavin Newsom",
     "valueUsd": 768,
     "timestamp": 1747019400
    }
   ],
   "marketSummaries": [
    {
     "netFlow": 7100,
     "marketId": "69317",
     "buyVolume": 45200,
     "sellVolume": 38100,
     "tradeCount": 42
    }
   ]
  },
  "meta": {
   "tier": "standard",
   "version": "v1",
   "endpoint": "/api/v1/feed",
   "latencyMs": 180,
   "timestamp": "2026-05-12T04:30:00.000Z"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polynews-news-3751e518/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from polynews.news](https://www.zero.xyz/host/polynews.news/llms.txt)