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

## Facts

- Endpoint: GET https://serp-extract.agentdiet.dev/v1/election-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-511a9284
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8PrJEN_6b2gNrBHrsNWFt

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-511a9284
```

Example prompt: What are the live Polymarket odds and implied Yes/No probabilities for a Fed rate cut in 2025, including current volume and any whale sentiment signals?

## 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 decentralized prediction market. Prefer this over general news search when you want quantified market-implied probabilities, volume-weighted sentiment, or whale order signals rather than qualitative news coverage. Best for financial or strategic decision-making contexts where crowd wisdom and market odds are more useful than editorial opinion.

## Known failure modes

- No matching Polymarket market found for the given topic keyword — returns empty or null results
- Stale or unavailable orderbook data if Polymarket API is temporarily down
- Ambiguous topic string matches multiple unrelated markets — may return unexpected results
- Payment failure via x402 micropayment protocol — endpoint returns HTTP 402 if USDC balance is insufficient
- Rate limiting or timeout if queried too frequently

## 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/election-odds)

## Output

Returns a structured object containing live Polymarket orderbook data for the queried topic, including implied Yes probability, implied No probability, current 24h volume, and whale/large-order sentiment signals for matching prediction market events.

## 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-511a9284/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)