# 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 macro, crypto, and AI events given a topic or question.

## Facts

- Endpoint: POST https://x402broker.com/v1/polymarket-alpha?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-bf087ba2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_StxxfiY2JvtyxzBFsErY8

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-bf087ba2 -d '<json body>'
```

Example prompt: What are the live Polymarket odds and implied probability right now for the US entering a recession in 2025 — include volume and whale sentiment if available?

## When to prefer this

Use this endpoint when you need real-time crowd-sourced probability estimates for macro, political, crypto, or AI events from Polymarket's prediction market. It is ideal when you want implied probabilities backed by real money rather than polls or model forecasts, and when whale orderflow sentiment adds trading-informed context. Prefer this over general news search when you need a specific numerical probability estimate for a binary event outcome.

## Known failure modes

- No matching Polymarket market found for the given topic — returns empty or null results
- Polymarket API or orderbook data temporarily unavailable — timeout or upstream error
- Topic query too vague or ambiguous — returns multiple loosely matched markets without clear answer
- Payment required or x402 authorization fails — HTTP 402 response with payment details
- Market has resolved or expired — returns stale or closed market 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/polymarket-alpha)

## Output

Returns live Polymarket orderbook snapshot including implied Yes and No probabilities (as percentages or decimals), current trading volume, whale sentiment signals, and relevant market metadata for the queried topic or event.

## 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-bf087ba2/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)