# 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 orderbook data, 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/polymarket-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-b8864867
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8ssvXStFFzdwsfKEGlcV5

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-b8864867
```

Example prompt: What are the current Polymarket odds and implied Yes/No probabilities for Bitcoin ETF approval, including whale sentiment and recent volume?

## When to prefer this

Choose this endpoint when you need real-time crowd-sourced probability estimates for macro, crypto, or AI events from Polymarket's decentralized prediction market. It is ideal for agents performing risk assessment, event-driven trading signals, or sentiment analysis based on prediction market wisdom rather than traditional news or price feeds.

## Known failure modes

- No matching Polymarket market found for the given topic keyword — returns empty or null results
- Topic too vague to match specific markets — may return multiple unrelated markets
- Polymarket API unavailability causing upstream data fetch failure
- Payment failure via x402 protocol resulting in 402 error before data is returned
- Rate limiting or quota exceeded on the underlying 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://onchain-risk.agentdiet.dev/v1/polymarket-feed)

## Output

Returns a structured response containing live Polymarket orderbook data for the queried topic, including implied Yes and No probabilities, trading volume, and whale sentiment indicators for relevant prediction market events matching the query.

## 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-b8864867/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)