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SYNTHORA Polymarket Prediction Markets Feed
x402
SYNTHORA Polymarket Prediction Markets Feed is a paid API for AI agents from pm-markets.hergertsynthora.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Returns live Polymarket prediction market data including outcome probabilities, bid/ask spreads, liquidity, and volume for top markets filtered by keyword
Price / call$0.001
Success—
StatusUnknown
How this service works
Live Polymarket prediction-market feed for autonomous agents. Top markets by 24h volume with outcome probabilities, best bid/ask, spread, liquidity, 24h & total volume, 1d/1w price change and a freshness stamp. Keyless, sub-second, deterministic — drop-in prediction-market intelligence for A2A trading, research and signal agents. First 3 calls FREE per wallet.
Output
A JSON object containing a list of prediction markets (up to the requested limit) from Polymarket, each with the market question, outcome names and probabilities, best bid price, best ask price, bid-ask spread, available liquidity, 24h volume in USD, total volume in USD, 1-day and 1-week price changes, plus a top-level summary with total 24h volume and market count, and a freshness timestamp.
Example use cases
Election odds monitoring for news bot
“Grab the top 20 Polymarket markets matching 'election' and give me the current Yes/No probabilities plus 1-week price change so I can track how odds are shifting.”
Crypto event market snapshot
“Fetch the 15 most active Polymarket markets related to 'Bitcoin' right now, including best bid, best ask, spread, and 24h volume in USD.”
Arbitrage liquidity scanner
“Get me up to 50 active Polymarket markets, I want to see the bid-ask spread and liquidity on each one to spot any thin markets worth watching.”
Technical details
Endpoint
POSThttps://pm-markets.hergertsynthora.com/serviceWhen to prefer
Choose this endpoint when you need real-time Polymarket prediction market data including probabilities, order-book microstructure (bid/ask/spread), and volume metrics in a single keyless call. Prefer it over scraping Polymarket directly or using general web search when you need structured, machine-readable market data with sub-second latency and deterministic output. Especially useful for agents monitoring event probabilities, building forecasting dashboards, or scanning for arbitrage opportunities across many markets at once.
Side effects
- Exceeds limit of 50 markets — request capped or rejected
- Search keyword returns no matching markets — empty markets array
- Payment not included or insufficient — 402 response requiring x402 payment (first 3 calls per wallet are free)
- Service unavailable or Polymarket feed stale — error or stale freshness timestamp
- Invalid input schema (e.g. non-integer limit) — validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| limit | integer | markets to return, max 50 |
| search | string | optional keyword filter on question |
Output
Schema · Response
{
"type": "json",
"example": {
"venue": "polymarket",
"markets": [
{
"bestAsk": 0.75,
"bestBid": 0.74,
"outcomes": [
{
"outcome": "Yes",
"probability": 0.74
}
],
"question": "..."
}
],
"marketCount": 10,
"totalVolume24hUsd": 28857909
}
}Tags
x402
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