# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from x402-audit.agentdiet.dev, paid per call via MPP, $0.015/call, status unknown (last checked 2026-10-21).

Fetches live Polymarket orderbook data, implied Yes/No probabilities, trading volume, and whale sentiment for a given macro, crypto, or AI prediction market topic.

## Facts

- Endpoint: GET https://x402-audit.agentdiet.dev/v1/macro-odds?utm_source=zero.xyz
- Price: $0.015/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: x402-audit.agentdiet.dev
- Website: https://x402-audit.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/x402-audit-agentdiet-dev-polymarket-live-prediction-market-odds-69f2f96f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KzKYlqhFbeXpu-Tl67Uz4

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 x402-audit-agentdiet-dev-polymarket-live-prediction-market-odds-69f2f96f
```

Example prompt: What are the live Polymarket odds and implied probability for the Fed cutting interest rates before the end of the year — including trading volume and any whale sentiment signals?

## When to prefer this

Use this endpoint when you need real-time, crowd-sourced probability estimates for macro, crypto, or AI events as priced by actual money on Polymarket. Prefer it over news sentiment or analyst forecasts when you want market-implied probabilities backed by real financial stakes and whale activity. It is ideal for agents monitoring event-driven trading signals, building decision dashboards, or answering 'what does the market think will happen?' questions.

## Known failure modes

- No matching Polymarket market found for the given topic keyword — returns empty or low-confidence result
- Payment failure via x402 micropayment protocol — endpoint returns HTTP 402 if payment not completed
- Stale or unavailable orderbook data if Polymarket API is temporarily down
- Ambiguous topic string matches multiple markets — may return blended or first-matched result
- Rate limiting or quota exhaustion returning error response

## 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://x402-audit.agentdiet.dev/v1/macro-odds)

## Output

Returns live Polymarket orderbook data for the queried topic, including implied Yes probability, implied No probability, current trading volume, and whale sentiment signals derived from large-order activity on the relevant prediction market.

## 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/x402-audit-agentdiet-dev-polymarket-live-prediction-market-odds-69f2f96f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-audit.agentdiet.dev](https://www.zero.xyz/host/x402-audit.agentdiet.dev/llms.txt)