# Polymarket Live Markets Feed

> Polymarket Live Markets Feed is a paid API for AI agents from polymarket-markets.hergertsynthora.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Fetches live prediction-market listings from Polymarket including active markets, prices, volume, and liquidity via the Gamma API

## Facts

- Endpoint: POST https://polymarket-markets.hergertsynthora.com/service
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polymarket-live-markets-feed-5685c4d7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0ZdL4-g9ve6vAJrYphXlw

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-live-markets-feed-5685c4d7 -d '<json body>'
```

Example prompt: Can you pull the latest 20 active prediction markets from Polymarket, including their prices and volume, so I can see what's currently trading?

## When to prefer this

Use this endpoint when you need live, structured Polymarket prediction-market data without an API key, especially for querying active markets with volume and liquidity. Prefer this over directly calling Polymarket's Gamma API when you need a simple POST interface with per-call micropayment billing and no authentication setup.

## Known failure modes

- Upstream Polymarket Gamma API unavailable — no charge applied, empty or error response returned
- Invalid limit value (non-integer) — likely 400 bad request
- Missing or malformed X-WALLET header — may result in rejection or billing error after free-call quota exhausted
- Rate limiting or quota exceeded per wallet address
- Network timeout reaching the proxy service

## How this service works

Live prediction-market data from Polymarket: active markets, prices, volume and liquidity via the public Gamma API. Deterministic JSON, no key. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.

## Output

Returns a deterministic JSON array of Polymarket prediction markets with fields such as market title, active status, current prices, trading volume, and liquidity — sourced from the Polymarket Gamma public API in real time.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "string",
   "description": "Search prediction markets ACROSS PLATFORMS (Polymarket + Kalshi) in one call: live prices, implied probability, volume, liquidity, end date and market conviction. Server-side search that actually find"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "schema": {
  "type": "object",
  "required": [
   "ok",
   "niche"
  ],
  "properties": {
   "ok": {
    "type": "boolean"
   },
   "error": {
    "type": "string"
   },
   "niche": {
    "type": "string"
   },
   "result": {
    "type": "object",
    "properties": {
     "nota": {
      "type": "string"
     },
     "filtro": {
      "type": "string"
     },
     "fuente": {
      "type": "string"
     },
     "markets": {
      "type": "array"
     },
     "as_of_utc": {
      "type": "string"
     },
     "latencia_s": {
      "type": "number"
     },
     "n_mercados": {
      "type": "number"
     },
     "plataformas": {
      "type": "array"
     },
     "sin_coincidencias": {
      "type": "boolean"
     },
     "mercados_examinados": {
      "type": "number"
     }
    }
   },
   "receipt": {
    "type": "object"
   }
  }
 },
 "example": {
  "ok": true,
  "niche": "polymarket_markets",
  "result": {
   "nota": "ningun mercado activo coincide con ese filtro; no se devuelven otros para no dar por bueno lo que no se pidio",
   "filtro": "bitcoin",
   "fuente": "<omitido en el ejemplo publico>",
   "markets": [],
   "as_of_utc": "2026-08-05T16:31:36Z",
   "latencia_s": 0.19,
   "n_mercados": 0,
   "sin_coincidencias": true,
   "mercados_minados__observador_1": 0
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polymarket-live-markets-feed-5685c4d7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from polymarket-markets.hergertsynthora.com](https://www.zero.xyz/host/polymarket-markets.hergertsynthora.com/llms.txt)