# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from serp-extract.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://serp-extract.agentdiet.dev/v1/prediction-oracle?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: serp-extract.agentdiet.dev
- Website: https://serp-extract.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/serp-extract-agentdiet-dev-polymarket-live-prediction-market-odds-4ff073d9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RwVevdx6XeAN3-sLg5bxt

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 serp-extract-agentdiet-dev-polymarket-live-prediction-market-odds-4ff073d9
```

Example prompt: What are the live Polymarket odds and implied Yes/No probabilities for the US Federal Reserve cutting interest rates at the next FOMC meeting — including volume and whale sentiment?

## When to prefer this

Use this endpoint when you need real-time crowd-sourced probability estimates for macro, crypto, political, or AI events from Polymarket's live orderbooks. Prefer this over news or LLM-based estimates when you want market-implied probabilities backed by real money and whale activity. Ideal for agents doing event-driven trading research, geopolitical risk assessment, or probability-weighted decision making.

## Known failure modes

- No matching Polymarket market found for the given topic keyword — returns empty results or low-confidence match
- Polymarket API or data source temporarily unavailable — upstream timeout or 5xx error
- Ambiguous topic keyword matching multiple unrelated markets — results may include irrelevant markets
- Payment not processed (HTTP 402) — x402 micropayment required before data is returned
- Rate limiting if query volume exceeds thresholds

## 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://serp-extract.agentdiet.dev/v1/prediction-oracle)

## Output

Returns live Polymarket orderbook data including implied Yes/No probabilities as percentages, current trading volume, and whale sentiment indicators for the queried event or topic keyword. May include multiple matching markets ranked by relevance.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "topic"
 ],
 "properties": {
  "limit": {
   "type": "integer",
   "default": 20,
   "maximum": 100,
   "minimum": 1,
   "description": "Maximum number of items to return per page (1-100)"
  },
  "topic": {
   "type": "string",
   "minLength": 1,
   "description": "Prediction market topic, event keyword, or question to query live Polymarket odds"
  },
  "cursor": {
   "type": "string",
   "description": "Opaque pagination cursor for fetching the next page"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/serp-extract-agentdiet-dev-polymarket-live-prediction-market-odds-4ff073d9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from serp-extract.agentdiet.dev](https://www.zero.xyz/host/serp-extract.agentdiet.dev/llms.txt)