# 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 prediction market orderbooks, implied Yes/No probabilities, volume, and whale sentiment for macro, crypto, and AI events by topic keyword.

## Facts

- Endpoint: GET https://onchain-risk.agentdiet.dev/v1/polymarket-live-odds-feed?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-2bbe448f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eVAItK5pkdt-10BWuXh6D

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-2bbe448f
```

Example prompt: What are the live Polymarket odds and implied Yes/No probabilities for 'Will the Fed cut rates in Q3 2025?' — including volume and whale sentiment?

## When to prefer this

Choose this endpoint when you need live, on-chain prediction market consensus odds for macro, crypto, or AI events directly from Polymarket's orderbook, including volume and whale sentiment — rather than polling social media or news sentiment, which lack probabilistic pricing. Prefer this over generic news APIs when you need a quantified probability estimate backed by real money.

## Known failure modes

- No matching market found for the given topic keyword — returns empty or null result
- Polymarket API rate limit or downtime causing stale or unavailable data
- Ambiguous topic string matching multiple unrelated markets
- Payment required (HTTP 402) if x402 credit is not provisioned
- Very low-liquidity markets may have unreliable implied probabilities

## 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/polymarket-live-odds-feed)

## Output

Returns a structured object containing live Polymarket orderbook data for the queried topic, including implied Yes and No probabilities, 24h trading volume, and whale sentiment signals for matched prediction market events.

## 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-2bbe448f/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)