# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from polymarket-odds.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-23).

Fetches live implied Yes/No probabilities, orderbook data, volume, and whale sentiment from Polymarket for any macro, crypto, or AI event topic.

## Facts

- Endpoint: POST https://polymarket-odds.agentdiet.dev/v1/macro-odds?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: polymarket-odds.agentdiet.dev
- Website: https://polymarket-odds.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/polymarket-odds-agentdiet-dev-polymarket-live-prediction-market-odds-60c0baa6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tbSxAyg6jeWwF6eYG3dF9

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 polymarket-odds-agentdiet-dev-polymarket-live-prediction-market-odds-60c0baa6 -d '<json body>'
```

Example prompt: What are the live Polymarket odds right now on whether the Fed will cut interest rates before the end of 2025 — including the implied Yes/No probabilities and any whale sentiment signals?

## When to prefer this

Use this endpoint when you need real-time crowd-sourced probability estimates for macro, crypto, AI, or geopolitical events from Polymarket's live orderbooks — particularly when you want implied probabilities derived from actual financial stakes rather than polling or sentiment analysis. Prefer this over generic news or sentiment APIs when you need quantified market consensus (e.g. 73% Yes) with volume and whale activity context.

## Known failure modes

- Topic keyword too vague — no matching Polymarket market found, returns empty or low-confidence results
- Polymarket API unavailable or rate-limited — upstream timeout or partial data
- Misspelled or ambiguous topic returns wrong market odds
- Very niche or newly created markets may have low liquidity and unreliable implied probabilities
- Payment failure via x402 — call not executed if USDC balance insufficient

## 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://polymarket-odds.agentdiet.dev/v1/macro-odds)

## Output

Returns a structured object containing live Polymarket orderbook data for the queried topic, including implied Yes/No probabilities as percentages, 24h trading volume, whale buy/sell sentiment signals, and relevant market metadata for matching 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/polymarket-odds-agentdiet-dev-polymarket-live-prediction-market-odds-60c0baa6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from polymarket-odds.agentdiet.dev](https://www.zero.xyz/host/polymarket-odds.agentdiet.dev/llms.txt)