# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from x402broker.com, paid per call via x402 or MPP, $0.01/call, status unknown (last checked 2026-10-20).

Fetches live Polymarket prediction market orderbooks, implied Yes/No probabilities, trading volume, and whale sentiment for macro, crypto, and AI events.

## Facts

- Endpoint: GET https://x402broker.com/v1/polymarket-feed?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402, MPP
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polymarket-live-prediction-market-odds-implied-probability-feed-05236262
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bQHfppaLjdGLhsisrr1Rl

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-prediction-market-odds-implied-probability-feed-05236262
```

Example prompt: What are the current Polymarket odds and implied Yes/No probability for a Fed rate cut happening this quarter, including volume and any notable whale sentiment?

## When to prefer this

Choose this endpoint when you need real-time crowd-sourced probability estimates for macro, crypto, or AI events from Polymarket's liquid prediction markets, especially when you want orderbook-derived implied probabilities rather than news sentiment or analyst forecasts.

## Known failure modes

- No matching Polymarket market found for the given topic — returns empty results
- Polymarket API unavailable or rate-limited — returns 5xx or timeout
- Ambiguous topic query with multiple matching markets — may return unexpected market
- Payment not processed — returns 402 Payment Required

## 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://x402broker.com/v1/polymarket-feed)

## Output

Returns live Polymarket orderbook data including implied Yes/No probabilities (as percentages), current trading volume, and whale sentiment indicators for the queried macro, crypto, or AI event markets.

## 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/polymarket-live-prediction-market-odds-implied-probability-feed-05236262/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402broker.com](https://www.zero.xyz/host/x402broker.com/llms.txt)