# 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 orderbooks, implied Yes/No probabilities, volume, and whale sentiment for a given macro, crypto, or AI event topic

## Facts

- Endpoint: POST https://x402broker.com/v1/polymarket-odds?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-2cba0350
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_njaIhdPX6UuvD0zEprsEl

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-2cba0350 -d '<json body>'
```

Example prompt: What are the live Polymarket odds and implied Yes/No probability for the US entering a recession in 2025 — and is there any notable whale activity on that market?

## When to prefer this

Choose this endpoint when an agent needs real-time crowd-sourced probability estimates for macro, crypto, political, or AI events sourced directly from Polymarket's live orderbook — particularly when whale sentiment and volume context are needed alongside raw odds. Prefer this over general web search when you want structured, numeric probability data rather than news articles or opinion pieces.

## Known failure modes

- Topic keyword matches no active Polymarket markets — returns empty or low-confidence result
- Ambiguous topic resolves to multiple markets — may return the wrong market or a list requiring disambiguation
- Polymarket API or data feed unavailability causes timeout or stale data
- Payment failure via x402 protocol blocks request before execution
- Very niche or newly created markets may have thin orderbooks and unreliable implied probabilities

## 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-odds)

## Output

Returns the live Polymarket orderbook snapshot for the queried topic including implied Yes probability, implied No probability, current trading volume, and whale sentiment indicators derived from large-order activity on the market.

## 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-2cba0350/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)