# 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 orderbook data, implied Yes/No probabilities, trading volume, and whale sentiment from Polymarket for a given macro, crypto, or AI event topic.

## Facts

- Endpoint: GET https://x402-audit.agentdiet.dev/v1/polymarket-alpha?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-b1b52470
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hQKeEIFGWs5O2zLdnyhBx

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-b1b52470
```

Example prompt: What are the live Polymarket odds and implied Yes/No probabilities for Bitcoin reaching $150k by end of 2025 — including volume and whether whales are leaning yes or no?

## When to prefer this

Use this endpoint when an agent needs real-time crowd-sourced probability estimates on macro, crypto, political, or AI events from Polymarket's liquid prediction markets. Prefer this over news or sentiment APIs when you need quantified implied probabilities rather than qualitative sentiment, and over generic crypto price feeds when the question is event-driven rather than spot-price-driven.

## Known failure modes

- Topic keyword matches no active Polymarket market — returns empty or null results
- Ambiguous topic matches multiple markets — may return the wrong or most popular match
- Polymarket API or data feed unavailable — returns error or stale data
- Payment not processed (HTTP 402) — call fails before data is returned
- Rate limiting or quota exceeded at the upstream provider

## 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-alpha)

## Output

Returns live Polymarket orderbook data for the queried topic including implied Yes and No probabilities, current trading volume, and whale/large-player sentiment signals for the matched prediction market 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-b1b52470/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)