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Polymarket Live Prediction Market Odds & Implied Probability Feed
Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from preflight.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-23).
Fetches live Polymarket prediction market orderbooks, implied Yes/No probabilities, volume, and whale sentiment for macro, crypto, and AI events by topic keyword.
Price / call$0.01
Success—
StatusUnknown
How this service works
Fetches live Polymarket prediction market orderbooks, implied Yes/No probabilities, volume, and whale sentiment for macro/crypto/AI events. (Live x402 v2, IETF MPP & MCP endpoint at https://preflight.agentdiet.dev/v1/polymarket-prediction-stream)
Output
Returns a structured object containing live Polymarket orderbook data for the queried topic, including implied Yes and No probabilities, total trading volume, and whale sentiment signals derived from large-order activity in the market.
Example use cases
Crypto event probability check
“What are the current Polymarket odds that the SEC approves a spot Ethereum ETF? Give me the implied Yes probability, trading volume, and what whale traders are signaling.”
Macro economic prediction lookup
“Check Polymarket for the live implied probability of a US Federal Reserve interest rate cut in September — I want to see Yes/No odds and recent volume.”
AI regulatory event sentiment
“What does Polymarket currently show for the chances of major US AI regulation passing this year? Pull the live orderbook odds and whale sentiment for that topic.”
Technical details
Endpoint
POSThttps://preflight.agentdiet.dev/v1/polymarket-prediction-stream?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need real-time, crowd-sourced probability estimates for macro, crypto, or AI events from Polymarket's decentralized prediction market. Prefer this over news APIs when you want market-implied probabilities and trader sentiment rather than editorial opinion. Best suited for agents that need quantitative Yes/No odds for event-driven decision-making or market research.
Side effects
- Topic keyword matches no active Polymarket market — returns empty or null result
- Polymarket API upstream unavailable — may return 502 or timeout
- Ambiguous topic string matches multiple markets — may return blended or unexpected results
- Payment failure (HTTP 402) if USDC balance is insufficient
- Rate limiting if the same topic is queried too rapidly without idempotency key
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| topicrequired | string | Prediction market topic, event keyword, or question to query live Polymarket odds |
Output
Schema · Response
{
"type": "object"
}Reviews
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