# 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 orderbook data, implied Yes/No probabilities, trading volume, and whale sentiment for a given prediction market topic or event keyword

## Facts

- Endpoint: GET https://x402-audit.agentdiet.dev/v1/market-odds?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-b4022ccb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hxvUuNqmw49-MivLxo7Go

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-b4022ccb
```

Example prompt: What are the live Polymarket odds and implied Yes/No probabilities right now for 'Fed rate cut in 2025'? I want to see the orderbook volume and whale sentiment too.

## When to prefer this

Use this endpoint when you need real-time crowd-implied probabilities from Polymarket for macro, crypto, political, or AI events — especially when you want orderbook depth and whale sentiment alongside the probability, rather than just a news sentiment score or historical odds.

## Known failure modes

- Topic keyword returns no matching Polymarket market — empty or null result
- Polymarket API unavailable or rate-limited — upstream timeout or error response
- Ambiguous topic matches multiple markets — may return wrong or mixed results
- Payment failure via x402 protocol — 402 response if USDC payment not completed
- Stale data if Polymarket orderbook hasn't been updated recently

## 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/market-odds)

## Output

Returns a structured object containing the live Polymarket orderbook for the queried topic, including implied Yes/No probabilities (as percentages or decimals), trading volume, and whale 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-b4022ccb/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)