# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from onchain-risk.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

Fetches live Polymarket orderbook data, Yes/No implied probabilities, volume, and whale sentiment for a given macro, crypto, or AI prediction market topic

## Facts

- Endpoint: GET https://onchain-risk.agentdiet.dev/v1/fomc-rate-odds?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: onchain-risk.agentdiet.dev
- Website: https://onchain-risk.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/onchain-risk-agentdiet-dev-polymarket-live-prediction-market-odds-74e14106
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6yet0u5tQahblnNr24UbE

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 onchain-risk-agentdiet-dev-polymarket-live-prediction-market-odds-74e14106
```

Example prompt: What are the current live Polymarket odds on the FOMC cutting interest rates at their next meeting — give me the implied Yes/No probabilities and any whale sentiment you can see?

## When to prefer this

Use this endpoint when you need real-time crowd-sourced probability estimates for macro, crypto, or AI events as priced by Polymarket traders — especially when you want market-implied odds (not just news sentiment) and whale order flow signals. Prefer this over news sentiment APIs when you need a quantitative probability, and over general financial data APIs when the question is event-based rather than price-based.

## Known failure modes

- Topic keyword matches no active Polymarket market — empty or null result returned
- Polymarket API upstream outage causing stale or unavailable data
- Ambiguous topic string matching multiple markets with mixed results
- Rate limiting or payment failure resulting in 402 response
- Market has resolved and is no longer active, returning historical rather than live data

## 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://onchain-risk.agentdiet.dev/v1/fomc-rate-odds)

## Output

Returns live Polymarket orderbook snapshot including implied Yes and No probabilities (as percentages or decimals), 24h trading volume, whale/large-order sentiment signal, and relevant market metadata for the queried topic or event keyword

## 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/onchain-risk-agentdiet-dev-polymarket-live-prediction-market-odds-74e14106/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from onchain-risk.agentdiet.dev](https://www.zero.xyz/host/onchain-risk.agentdiet.dev/llms.txt)