# 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 orderbook data, implied Yes/No probabilities, volume, and whale sentiment for a given macro, crypto, or AI event topic.

## Facts

- Endpoint: GET https://serp-extract.agentdiet.dev/v1/fomc-rate-odds?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-eeee68ad
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CXFVpXFe7DWYYd8M8yL-j

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-eeee68ad
```

Example prompt: What are the live Polymarket odds and implied Yes/No probabilities for a Fed rate cut happening at the next FOMC meeting?

## When to prefer this

Choose this endpoint when you need real-time crowd-sourced probability estimates from Polymarket's prediction market for macro, crypto, political, or AI events. It is especially useful when you want market-implied probabilities (rather than analyst forecasts or model outputs) and when whale/large-trader sentiment is relevant. Prefer this over general news or sentiment APIs when you want financially-incentivized crowd wisdom expressed as Yes/No odds.

## Known failure modes

- No matching Polymarket market found for the given topic keyword — returns empty or null results
- Topic string too vague or ambiguous, matching unintended markets
- Polymarket data temporarily unavailable due to upstream API issues — may return stale or error response
- Payment not processed (HTTP 402) if x402 USDC payment is not attached
- Rate limiting if called too frequently without valid payment

## 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/fomc-rate-odds)

## Output

Returns live Polymarket orderbook data for the queried topic, including implied Yes/No probability percentages, 24h trading volume, whale/large-trader sentiment signals, and other market metadata relevant to the specified event or question.

## 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-eeee68ad/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)