# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from defi-yield.agentdiet.dev, paid per call via MPP, $0.01/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://defi-yield.agentdiet.dev/v1/prediction-oracle?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: defi-yield.agentdiet.dev
- Website: https://defi-yield.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/defi-yield-agentdiet-dev-polymarket-live-prediction-market-odds-2f163851
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zCeLtIY6mfxdBy5S8hEZu

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 defi-yield-agentdiet-dev-polymarket-live-prediction-market-odds-2f163851
```

Example prompt: What are the live Polymarket odds and implied probabilities right now for a US recession happening this year — including volume and whale sentiment?

## When to prefer this

Choose this endpoint when you need real-time crowd-sourced probability estimates for macro, crypto, political, or AI events directly from Polymarket's decentralized prediction market. It is ideal when you want market-implied odds rather than model-generated forecasts, and especially useful when whale sentiment and orderbook depth are relevant signals. Prefer this over generic news or sentiment APIs when you need quantified probability rather than qualitative opinion.

## Known failure modes

- No matching Polymarket market found for the given topic keyword
- Polymarket API or data feed temporarily unavailable, returning stale or empty data
- Payment required (HTTP 402) if x402 micropayment header is missing or insufficient
- Topic string too vague to resolve to a specific market, returning multiple ambiguous results
- Rate limiting or quota exhaustion on the upstream Polymarket data feed

## 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://defi-yield.agentdiet.dev/v1/prediction-oracle)

## Output

Returns a structured response with live Polymarket orderbook data including implied Yes and No probabilities, 24h trading volume, and whale sentiment signals for the queried prediction market 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/defi-yield-agentdiet-dev-polymarket-live-prediction-market-odds-2f163851/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from defi-yield.agentdiet.dev](https://www.zero.xyz/host/defi-yield.agentdiet.dev/llms.txt)