# SYNTHORA Prediction Market Odds

> SYNTHORA Prediction Market Odds is a paid API for AI agents from prediction-markets.hergertsynthora.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Fetches real-time prediction-market odds and liquidity data from Polymarket for any topic including elections, crypto, and macroeconomics

## Facts

- Endpoint: POST https://prediction-markets.hergertsynthora.com/service
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthora-prediction-market-odds-dd07d28c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_51dTxaf8HxS-CMzszrgQP

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 synthora-prediction-market-odds-dd07d28c -d '<json body>'
```

Example prompt: Pull the top 10 open Polymarket prediction markets right now — I want to see current odds and liquidity for anything related to crypto or macro.

## When to prefer this

Use this endpoint when you need real-time crowd-sourced probability estimates from Polymarket's prediction markets — especially for elections, crypto price targets, or macro events. Prefer this over news sentiment APIs when you want market-priced probabilities with liquidity signals rather than qualitative sentiment. Ideal for forecasting and hedging agents that need quantitative probability data.

## Known failure modes

- Empty result set if no markets match the closed/open filter
- Polymarket API unavailability causing stale or missing data
- Invalid 'closed' parameter value returning an error
- Exceeding rate limits resulting in payment or quota errors
- Network timeout if Polymarket upstream is slow

## How this service works

Real-time prediction-market odds and liquidity from Polymarket for any topic (elections, crypto, macro). For forecasting and hedging agents. Free source. $0.001 USDC via x402 on Base. SYNTHORA.

## Output

Returns a JSON object with an 'ok' status flag, a 'niche' identifier ('prediction-markets'), and a 'result' object containing real-time market odds, probabilities, and liquidity data from Polymarket for the queried topics, filtered and limited per the input parameters.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "integer",
   "description": "max markets to return (1-50, default 10)"
  },
  "source": {
   "enum": [
    "all",
    "polymarket",
    "kalshi"
   ],
   "type": "string",
   "description": "exchange filter"
  },
  "min_liquidity": {
   "type": "number",
   "description": "minimum liquidity in USD (default 1000)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "niche": "prediction_markets",
  "result": {
   "count": 1,
   "source": "all",
   "markets": [
    {
     "id": "559651",
     "spread": 0.01,
     "end_date": "2026-12-31T00:00:00Z",
     "exchange": "polymarket",
     "question": "Xi Jinping out before 2027?",
     "volume_usd": 1234567.89,
     "liquidity_usd": 278050.28,
     "probability_yes": 0.05
    }
   ],
   "freshness_utc": "2026-08-07T12:00:00Z",
   "total_liquidity_usd": 278050.28
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-prediction-market-odds-dd07d28c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from prediction-markets.hergertsynthora.com](https://www.zero.xyz/host/prediction-markets.hergertsynthora.com/llms.txt)