# 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 a given macro, crypto, or AI event topic.

## Facts

- Endpoint: GET https://onchain-risk.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: 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-f374aea4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_z7SSYrxPR1K_RJNbZjT-Q

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-f374aea4
```

Example prompt: What are the live Polymarket odds and implied Yes probability right now for Bitcoin ETF approval? Include volume and whether whales are leaning Yes or No.

## When to prefer this

Choose this endpoint when you need real-time crowd-sourced probability estimates for macro, crypto, or AI events sourced directly from Polymarket's live orderbooks, especially when you want implied probability percentages and whale sentiment rather than just news sentiment or analyst forecasts. Prefer this over general news or sentiment APIs when you need market-backed probability data.

## Known failure modes

- No matching prediction market found for the given topic keyword — returns empty or null results
- Ambiguous topic matches multiple markets — response may include multiple markets requiring disambiguation
- Stale or delayed orderbook data if Polymarket API is experiencing latency
- Payment failure via x402 protocol if USDC balance is insufficient
- Rate limiting if too many calls are made in rapid succession

## 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/prediction-markets)

## Output

Returns a structured response containing live Polymarket orderbook data for the queried topic, including implied Yes/No probabilities, total trading volume, and whale sentiment indicators for matching 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-f374aea4/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)