# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from preflight.agentdiet.dev, paid per call via MPP, $0.015/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://preflight.agentdiet.dev/v1/crypto-betting-odds?utm_source=zero.xyz
- Price: $0.015/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: preflight.agentdiet.dev
- Website: https://preflight.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/preflight-agentdiet-dev-polymarket-live-prediction-market-odds-16cba339
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SnP2T9GFz891g714JnGMU

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 preflight-agentdiet-dev-polymarket-live-prediction-market-odds-16cba339
```

Example prompt: What are the live Polymarket odds and implied probabilities right now for a US Bitcoin spot ETF approval — and what is the whale sentiment leaning toward?

## When to prefer this

Choose this endpoint when you need real-time crowd-sourced probability estimates from Polymarket for macro, crypto, geopolitical, or AI events — especially when you want both orderbook-level data and whale sentiment in a single call, rather than scraping Polymarket directly or using a generic search tool.

## Known failure modes

- No matching market found for the given topic keyword — returns empty or null result
- Topic query too vague — multiple unrelated markets may be returned with ambiguous probabilities
- Polymarket API or orderbook feed temporarily unavailable — upstream data outage
- Payment failure (HTTP 402) if x402 micropayment is not correctly processed
- Rate limiting or quota exhaustion resulting in request rejection

## 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://preflight.agentdiet.dev/v1/crypto-betting-odds)

## Output

Returns live Polymarket orderbook data for the queried topic, including implied Yes and No probabilities, current trading volume, and whale sentiment signals — all structured for direct agent consumption.

## 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/preflight-agentdiet-dev-polymarket-live-prediction-market-odds-16cba339/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from preflight.agentdiet.dev](https://www.zero.xyz/host/preflight.agentdiet.dev/llms.txt)