# 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 MPP, $0.01/call, status unknown (last checked 2026-10-23).

Fetches live Polymarket prediction market orderbook data, implied Yes/No probabilities, volume, and whale sentiment for any macro, crypto, or AI event topic.

## Facts

- Endpoint: POST https://x402broker.com/v1/event-probabilities?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: x402broker.com
- Website: https://x402broker.com
- Canonical page: https://www.zero.xyz/c/x402broker-com-polymarket-live-prediction-market-odds-implied-c17b3f5f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_25EXBJ0frkKS-pel_cblA

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 x402broker-com-polymarket-live-prediction-market-odds-implied-c17b3f5f -d '<json body>'
```

Example prompt: What are the live Polymarket odds and implied Yes/No probabilities right now for Bitcoin reaching $100k by end of year — including volume and whale sentiment?

## When to prefer this

Use this endpoint when you need live, crowdsourced market-implied probabilities for macro, crypto, or political events — especially when you want the wisdom-of-crowds signal from Polymarket rather than model-generated forecasts. Prefer this over general news search when you need a quantified probability with volume backing and whale sentiment context.

## Known failure modes

- Topic keyword does not match any active Polymarket market — returns empty or low-confidence results
- Polymarket API or orderbook data temporarily unavailable — upstream data lag or outage
- Ambiguous topic string matches multiple markets — response may include multiple or unintended markets
- Rate limiting or payment failure due to x402 protocol issues — request not processed
- Very niche or newly created markets may have low liquidity and unreliable probability data

## 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/event-probabilities)

## Output

Returns live Polymarket orderbook data including implied Yes/No probabilities (as percentages or decimals), trading volume, whale accumulation/sentiment signals, and relevant market metadata 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/x402broker-com-polymarket-live-prediction-market-odds-implied-c17b3f5f/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)