# 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 2026-10-23).

Fetches live Polymarket prediction market orderbook data, implied Yes/No probabilities, trading volume, and whale sentiment for macro, crypto, and AI-related events.

## Facts

- Endpoint: POST https://serp-extract.agentdiet.dev/v1/polymarket-live-odds-feed?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- 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-202eea33
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_H62qOXzjsoxWExB9hcbe9

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-202eea33 -d '<json body>'
```

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

## When to prefer this

Choose this endpoint when you need real-time crowd-sourced probability estimates for macro, crypto, or AI events as priced by active prediction market traders on Polymarket, especially when you want orderbook depth, volume, and large-trader (whale) sentiment in addition to simple odds. Prefer this over news APIs or sentiment tools when you want market-implied probabilities rather than qualitative opinions.

## Known failure modes

- No matching Polymarket market found for the given topic keyword, returning empty or null results
- Stale or delayed data if Polymarket orderbook feed is temporarily unavailable
- Ambiguous topic matching multiple markets, returning multiple or incorrect market results
- Payment failure via x402 if USDC balance is insufficient, blocking the request
- Malformed or too-short topic input failing schema validation (minLength:1)

## 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/polymarket-live-odds-feed)

## Output

Returns live Polymarket orderbook data for the queried topic, including implied Yes and No probabilities as percentages, current trading volume, and whale (large trader) sentiment signals for the matched prediction market event.

## 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/serp-extract-agentdiet-dev-polymarket-live-prediction-market-odds-202eea33/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)