# 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, volume, and whale sentiment for macro, crypto, and AI events.

## Facts

- Endpoint: GET https://x402broker.com/v1/market-odds?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-42c8334c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PEG_zXCq4mOk8sLaF3tlj

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-42c8334c
```

Example prompt: What are the live Polymarket odds and implied Yes/No probabilities right now for a Fed rate cut happening this month, including whale sentiment and trading volume?

## 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 prediction market. Prefer this over traditional news or sentiment APIs when you want a financially-backed probability signal rather than narrative sentiment, and when you specifically need orderbook depth, implied Yes/No probabilities, or whale activity on a specific event.

## Known failure modes

- No active Polymarket market found for the given topic — returns empty or null result
- Topic query too vague to match a specific market
- Polymarket API upstream outage causing stale or unavailable data
- Rate limiting or payment failure at the x402 layer

## 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/market-odds)

## Output

Returns live Polymarket orderbook data including implied Yes probability, implied No probability, current bid/ask spread, total trading volume, and whale sentiment signals for the queried macro, crypto, or AI event 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/polymarket-live-prediction-market-odds-implied-probability-feed-42c8334c/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)