# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

Fetches live Polymarket orderbook data, implied Yes/No probabilities, trading volume, and whale sentiment for macro, crypto, and AI event prediction markets.

## Facts

- Endpoint: GET https://agentdiet.dev/v1/prediction-markets?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: agentdiet.dev
- Website: https://agentdiet.dev
- Canonical page: https://www.zero.xyz/c/agentdiet-dev-polymarket-live-prediction-market-odds-implied-8f79413d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_n6dKHSGAUOBupNZEb-P3c

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 agentdiet-dev-polymarket-live-prediction-market-odds-implied-8f79413d
```

Example prompt: What are the current Polymarket odds and implied Yes/No probabilities for 'Will the Fed cut rates in 2025?' — including volume and whale sentiment?

## When to prefer this

Use this endpoint when you need live crowd-sourced probability estimates for discrete future events — especially macro, crypto, or AI/political outcomes — rather than relying on analyst forecasts or news sentiment. Prefer it over general news APIs when you need quantified market-implied probabilities and volume-backed sentiment from active traders on Polymarket.

## Known failure modes

- Topic keyword too vague — no matching Polymarket market found, returns empty or null result
- Polymarket API upstream outage — endpoint returns error or stale data
- Payment failure (HTTP 402) if x402 USDC micropayment is not properly attached
- Rate limiting if too many calls are made in quick succession
- Topic returns multiple ambiguous markets with no clear best match

## 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://agentdiet.dev/v1/prediction-markets)

## Output

Returns live Polymarket orderbook data for the queried topic including implied Yes probability, implied No probability, total trading volume, and whale/large-trader 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/agentdiet-dev-polymarket-live-prediction-market-odds-implied-8f79413d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentdiet.dev](https://www.zero.xyz/host/agentdiet.dev/llms.txt)