# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from polymarket-odds.agentdiet.dev, paid per call via MPP, $0.01/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://polymarket-odds.agentdiet.dev/v1/prediction-markets?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: polymarket-odds.agentdiet.dev
- Website: https://polymarket-odds.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/polymarket-odds-agentdiet-dev-polymarket-live-prediction-market-odds-adef025d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2CrV5agjAzQOfqoN8ezJq

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 polymarket-odds-agentdiet-dev-polymarket-live-prediction-market-odds-adef025d
```

Example prompt: What are the current Polymarket odds and implied Yes/No probabilities for a Federal Reserve rate cut in 2025 — include trading volume and any whale sentiment signals?

## When to prefer this

Use this endpoint when you need real-time crowd-sourced probability estimates for macro, crypto, political, or AI events as reflected by actual money on Polymarket. Prefer this over news sentiment or analyst forecasts when you want market-implied probabilities backed by real capital, orderbook depth, and whale activity signals.

## Known failure modes

- No matching Polymarket market found for the given topic keyword — returns empty or null result
- Topic string too vague or ambiguous, returning unrelated markets
- Market may be resolved or expired, returning stale or terminal odds
- Payment required (HTTP 402) if x402 payment header is missing or insufficient
- Rate limiting or upstream Polymarket API unavailability causing timeout or error

## 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://polymarket-odds.agentdiet.dev/v1/prediction-markets)

## Output

Returns live Polymarket prediction market data for the queried topic, including implied Yes and No probabilities derived from the orderbook, current trading volume, and whale sentiment indicators — giving a real-time crowd-sourced probability estimate for the event in question.

## 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/polymarket-odds-agentdiet-dev-polymarket-live-prediction-market-odds-adef025d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from polymarket-odds.agentdiet.dev](https://www.zero.xyz/host/polymarket-odds.agentdiet.dev/llms.txt)