# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from x402-audit.agentdiet.dev, paid per call via MPP, $0.015/call, status unknown (last checked 2026-10-21).

Fetches live Polymarket prediction market orderbooks, implied Yes/No probabilities, volume, and whale sentiment for a given topic or event keyword.

## Facts

- Endpoint: GET https://x402-audit.agentdiet.dev/v1/polymarket-prediction-stream?utm_source=zero.xyz
- Price: $0.015/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: x402-audit.agentdiet.dev
- Website: https://x402-audit.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/x402-audit-agentdiet-dev-polymarket-live-prediction-market-odds-1d055b41
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7ESKhTv1QGp54qAs20cZf

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 x402-audit-agentdiet-dev-polymarket-live-prediction-market-odds-1d055b41
```

Example prompt: What are the live Polymarket odds and implied Yes/No probabilities right now for Bitcoin reaching $100K by end of year — including orderbook volume and what the whales are betting?

## When to prefer this

Use 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 orderbooks. Prefer this over general news or sentiment APIs when you need quantified market-implied probabilities and large-trader (whale) positioning data rather than qualitative sentiment.

## Known failure modes

- Topic keyword matches no active Polymarket markets — returns empty or null results
- Polymarket API or upstream data unavailable — timeout or 5xx error
- Ambiguous topic string matches multiple markets — may return aggregated or first-match data
- Payment not processed (HTTP 402) — request blocked without valid x402 payment header

## 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://x402-audit.agentdiet.dev/v1/polymarket-prediction-stream)

## Output

Returns live Polymarket prediction market data including implied Yes/No probabilities derived from the orderbook, total market volume, and whale sentiment signals 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/x402-audit-agentdiet-dev-polymarket-live-prediction-market-odds-1d055b41/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-audit.agentdiet.dev](https://www.zero.xyz/host/x402-audit.agentdiet.dev/llms.txt)