# 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/fomc-rate-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-7ee85ea0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fG0UKIQL3mjL4Rge67HhT

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-7ee85ea0
```

Example prompt: What are the live Polymarket odds and implied Yes/No probability right now for the FOMC cutting interest rates at their next meeting, including volume and whale sentiment?

## When to prefer this

Use this endpoint when you need real-time crowd-sourced probability estimates for macro, crypto, or AI events from Polymarket's decentralized prediction markets, especially when you want orderbook depth and whale sentiment in addition to raw odds. Prefer this over news APIs or sentiment tools when you want market-implied probabilities rather than qualitative opinion.

## Known failure modes

- Topic keyword too vague — no matching Polymarket market found, returns empty or null result
- Polymarket API rate limit or outage causes upstream failure
- Payment not processed (HTTP 402) due to insufficient USDC balance or x402 misconfiguration
- Malformed or missing topic parameter returns validation error
- Market may be resolved or expired, returning stale or unavailable data

## 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/fomc-rate-odds)

## Output

Returns live Polymarket orderbook data for the queried topic, including implied Yes/No probabilities (as percentages or decimals), total market volume, and whale sentiment indicators reflecting large-position activity.

## 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-7ee85ea0/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)