# 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 2026-10-21).

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

## Facts

- Endpoint: GET https://x402broker.com/v1/polymarket-alpha?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- 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-65f88f83
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mL3KQDfwkHVQ4HthXI1vd

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-65f88f83
```

Example prompt: What are the live Polymarket odds and implied yes/no probability right now for Bitcoin hitting $150k this year — including trading volume and any whale sentiment signals?

## When to prefer this

Choose this endpoint when you need real-time crowd-sourced probability estimates for macro, crypto, political, or AI events from Polymarket's prediction market. Prefer it over news or sentiment APIs when you want financially-weighted, market-implied probabilities rather than textual opinion. Ideal for trading bots, research agents, or decision-support tools that need quantified event odds with volume and whale flow context.

## Known failure modes

- No matching Polymarket market found for the given topic keyword — returns empty or null result
- Ambiguous topic matches multiple markets — may return the most liquid or first match
- Polymarket API downtime or rate limiting may cause delayed or failed responses
- Topic too broad may return aggregate or approximate market data
- Payment failure via x402 protocol prevents data retrieval

## 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-alpha)

## Output

Returns live Polymarket orderbook data for the queried topic, including implied Yes and No probabilities (as percentages or decimals), current trading volume, and whale sentiment signals derived from large-order activity — enabling agents to assess crowd-sourced event probability in real time.

## 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-65f88f83/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)