# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from prompt-guard.agentdiet.dev, paid per call via MPP, $0.015/call, status unknown (last checked 2026-10-21).

Fetches live Polymarket orderbook data, implied Yes/No probabilities, trading volume, and whale sentiment for a given prediction market topic or event keyword.

## Facts

- Endpoint: GET https://prompt-guard.agentdiet.dev/v1/prediction-oracle?utm_source=zero.xyz
- Price: $0.015/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: prompt-guard.agentdiet.dev
- Website: https://prompt-guard.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/prompt-guard-agentdiet-dev-polymarket-live-prediction-market-odds-9fd7bb0a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LpO_LiDQwH1JyAXaH5z9C

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 prompt-guard-agentdiet-dev-polymarket-live-prediction-market-odds-9fd7bb0a
```

Example prompt: What are the live Polymarket odds and implied Yes/No probabilities right now for 'Will the Fed cut rates in 2025'? I want to see the whale sentiment and trading volume too.

## When to prefer this

Use this endpoint when you need real-time crowd-sourced probability estimates for macro, crypto, political, or AI events as reflected by actual money on Polymarket. Prefer this over general news or sentiment APIs when you want market-implied probabilities and whale activity signals rather than qualitative sentiment. Best suited for agents doing event-driven trading analysis, research, or forecasting dashboards.

## Known failure modes

- No matching Polymarket market found for the given topic keyword — returns empty or null result
- Stale or delayed data if Polymarket API is rate-limited or unavailable
- Ambiguous topic keyword matching multiple markets — may return unexpected or mixed results
- Payment failure via x402 protocol resulting in 402 response and no data returned
- Generic 500 error if the underlying aggregation service is down

## 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://prompt-guard.agentdiet.dev/v1/prediction-oracle)

## Output

Returns live Polymarket orderbook data for the queried topic, including implied Yes and No probabilities, current trading volume, and whale sentiment indicators for macro, crypto, or AI 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/prompt-guard-agentdiet-dev-polymarket-live-prediction-market-odds-9fd7bb0a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from prompt-guard.agentdiet.dev](https://www.zero.xyz/host/prompt-guard.agentdiet.dev/llms.txt)