# 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, including implied Yes/No probabilities, volume, and whale sentiment for a given topic or event keyword.

## Facts

- Endpoint: GET https://workflows.agentdiet.dev/v1/polymarket-odds?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-5e2146b1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wqAUWjvf0OKteZbISNaD0

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-5e2146b1
```

Example prompt: What are the live Polymarket odds and implied Yes/No probabilities right now for 'Bitcoin ETF approval by end of year' — including volume and whale sentiment?

## When to prefer this

Use 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 generic news or sentiment APIs when you want a quantified, market-implied probability (Yes/No odds) backed by actual capital at risk. Ideal for agents that need to gauge market consensus on binary outcomes or compare whale vs. retail positioning.

## Known failure modes

- No matching Polymarket market found for the given topic keyword — returns empty or null result
- Topic query is too vague and matches multiple markets — may return aggregated or ambiguous data
- Polymarket API upstream downtime causes stale or unavailable data
- Rate limiting or payment failure (HTTP 402) if x402 micropayment is not properly handled
- Very niche or recently created markets may have low liquidity or incomplete orderbook data

## 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-odds)

## Output

Returns live Polymarket prediction market data for the queried topic, including implied Yes and No probabilities derived from the orderbook, total trading volume, and whale sentiment signals for macro, crypto, or AI-related 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/workflows-agentdiet-dev-polymarket-live-prediction-market-odds-5e2146b1/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)