# 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, $0.015/call, status unknown (last checked 2026-10-21).

Fetches live Polymarket prediction market orderbooks, implied Yes/No probabilities, volume, and whale sentiment for a given macro, crypto, or AI event topic.

## Facts

- Endpoint: GET https://preflight.agentdiet.dev/v1/prediction-oracle?utm_source=zero.xyz
- Price: $0.015/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: preflight.agentdiet.dev
- Website: https://preflight.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/preflight-agentdiet-dev-polymarket-live-prediction-market-odds-3a798b73
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9wCUNLwYrMNFuMxzWLmza

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 preflight-agentdiet-dev-polymarket-live-prediction-market-odds-3a798b73
```

Example prompt: What are the current Polymarket odds and implied Yes/No probabilities for a Fed interest rate cut before the end of 2025, including volume and whale sentiment?

## When to prefer this

Use this endpoint when you need real-time crowd-sourced probability estimates for macro, crypto, political, or AI events as priced by Polymarket traders. Prefer it over traditional news or analyst forecasts when you want market-implied probabilities with volume and large-trader (whale) sentiment signals. Ideal for pre-trade risk checks, research on geopolitical or regulatory outcomes, or any workflow requiring quantified event probability from a decentralized prediction market.

## Known failure modes

- No matching Polymarket market found for the given topic — returns empty or no-result response
- Ambiguous topic keyword matching multiple markets — may return the most liquid match or require disambiguation
- Polymarket API or data feed temporarily unavailable — upstream outage causing delayed or failed response
- Payment not processed (HTTP 402) — x402 micropayment must succeed before data is returned
- Topic string too vague or too short — insufficient to resolve a specific market

## 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/prediction-oracle)

## Output

Returns structured prediction market data from Polymarket including implied Yes and No probabilities, live orderbook snapshot, cumulative trading volume, and whale sentiment indicators for the queried event or topic.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "topic"
 ],
 "properties": {
  "topic": {
   "type": "string",
   "minLength": 1,
   "description": "Prediction market topic, event keyword, or question to query live Polymarket odds"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/preflight-agentdiet-dev-polymarket-live-prediction-market-odds-3a798b73/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from preflight.agentdiet.dev](https://www.zero.xyz/host/preflight.agentdiet.dev/llms.txt)