# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from workflows.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 a given event topic or keyword.

## Facts

- Endpoint: GET https://workflows.agentdiet.dev/v1/polymarket-alpha?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: workflows.agentdiet.dev
- Website: https://workflows.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/workflows-agentdiet-dev-polymarket-live-prediction-market-odds-faf1b205
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1qJh7tY6Kbz63Ly1M2khY

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 workflows-agentdiet-dev-polymarket-live-prediction-market-odds-faf1b205
```

Example prompt: What are the live Polymarket odds and implied Yes/No probability for a US recession happening in 2025 — and are whales leaning Yes or No?

## 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 live orderbooks, especially when whale sentiment and volume context matter. Prefer this over static news or analyst forecasts when you want market-implied probabilities rather than opinion-based assessments.

## Known failure modes

- No matching market found for the given topic keyword — returns empty or null results
- Stale data if Polymarket API is experiencing downtime or rate limits
- Ambiguous topic keyword matching multiple markets — results may be for wrong market
- Payment failure (HTTP 402) if USDC balance is insufficient for the $0.01 per-call fee
- Generic 500 error if the upstream Polymarket orderbook API is unavailable

## 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://workflows.agentdiet.dev/v1/polymarket-alpha)

## Output

Returns live Polymarket orderbook data for the queried topic including implied Yes probability, implied No probability, total market volume, and whale sentiment indicators (large-position buy/sell pressure), enabling agents to assess crowd-sourced event probabilities in real time.

## 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/workflows-agentdiet-dev-polymarket-live-prediction-market-odds-faf1b205/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from workflows.agentdiet.dev](https://www.zero.xyz/host/workflows.agentdiet.dev/llms.txt)