# Polymarket Live Prediction Market Odds & Implied Probability Feed

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

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

## Facts

- Endpoint: GET https://shopify-spy.agentdiet.dev/v1/polymarket-live-odds-feed?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: shopify-spy.agentdiet.dev
- Website: https://shopify-spy.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/shopify-spy-agentdiet-dev-polymarket-live-prediction-market-odds-f49fb87c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AajDARHHNmexd1teX2MfO

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 shopify-spy-agentdiet-dev-polymarket-live-prediction-market-odds-f49fb87c
```

Example prompt: What are the live Polymarket odds and implied Yes/No probabilities for the Fed cutting interest rates in July 2025, including current volume and any whale sentiment signals?

## When to prefer this

Choose this endpoint when you need real-time crowd-sourced probability estimates for macro, crypto, political, or AI events from Polymarket's prediction market. Prefer this over traditional news sentiment analysis when you want market-implied probabilities backed by actual money at stake. Best suited for agents that need to gauge event likelihood, track whale positioning, or incorporate prediction market data into trading or research workflows.

## Known failure modes

- Topic keyword matches no active Polymarket market — returns empty or null results
- Ambiguous topic string matches multiple markets — may return unexpected or mixed results
- Polymarket API upstream downtime — returns error or stale data
- Rate limiting or payment failure via x402 — returns 402 Payment Required
- Very niche or newly created markets may have low liquidity and unreliable implied probabilities

## 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://shopify-spy.agentdiet.dev/v1/polymarket-live-odds-feed)

## Output

Returns live Polymarket orderbook data for the queried topic including implied Yes and No probabilities (as percentages), 24h trading volume, whale buy/sell sentiment signals, and relevant market metadata such as event name and current liquidity depth.

## 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/shopify-spy-agentdiet-dev-polymarket-live-prediction-market-odds-f49fb87c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from shopify-spy.agentdiet.dev](https://www.zero.xyz/host/shopify-spy.agentdiet.dev/llms.txt)