# 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 orderbooks, implied Yes/No probabilities, volume, and whale sentiment for macro, crypto, and AI events by topic keyword.

## Facts

- Endpoint: POST https://serp-extract.agentdiet.dev/v1/event-probabilities?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-be97f9dd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XpL7chUaQZAG9ADLY6A_x

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-be97f9dd -d '<json body>'
```

Example prompt: What are the current live Polymarket odds and implied Yes/No probabilities for 'Bitcoin ETF approval' — I also want to see whale sentiment and recent volume?

## When to prefer this

Choose this endpoint when you need real-time crowd-sourced probability estimates for macro, crypto, or AI events sourced directly from Polymarket's live orderbooks, especially when whale sentiment and volume data are needed alongside raw odds. Prefer this over news APIs when you want market-implied probability rather than editorial opinion, and over generic search when you need structured Yes/No probability figures.

## Known failure modes

- Topic keyword returns no matching Polymarket market — endpoint may return empty or null results
- Polymarket API unavailable or rate-limited — may return upstream error
- Ambiguous topic keyword matches multiple markets — response may include multiple or unexpected results
- Payment failure via x402 — call not executed if USDC payment is rejected

## 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/event-probabilities)

## Output

Returns a structured object containing live Polymarket orderbook data for the queried topic, including implied Yes and No probabilities, trading volume, and whale sentiment signals for macro, crypto, or AI-related 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/serp-extract-agentdiet-dev-polymarket-live-prediction-market-odds-be97f9dd/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)