# Polymarket Live Prediction Market Odds & Implied Probability Feed

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

## Facts

- Endpoint: GET https://polymarket-odds.agentdiet.dev/v1/polymarket-prediction-stream?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: polymarket-odds.agentdiet.dev
- Website: https://polymarket-odds.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/polymarket-odds-agentdiet-dev-polymarket-live-prediction-market-odds-f0255a0d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8ZZLIUJdHTi--mKfCEklG

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 polymarket-odds-agentdiet-dev-polymarket-live-prediction-market-odds-f0255a0d
```

Example prompt: What are the current Polymarket odds and implied probabilities for Bitcoin reaching $100k by end of year — include 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, political, or AI events as priced by Polymarket traders — especially when you want implied market odds rather than analyst forecasts, and when whale sentiment or trading volume context matters. Prefer this over general news or sentiment APIs when you want a financial-market-derived probability signal for a specific binary outcome.

## Known failure modes

- No matching Polymarket market found for the given topic keyword — returns empty or null market data
- Polymarket API upstream unavailability causing stale or missing data
- Ambiguous topic keyword matching multiple markets — may return aggregate or first-match results
- Payment required (HTTP 402) if x402 micropayment header is not included
- Rate limiting if too many requests are sent in quick succession

## 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://polymarket-odds.agentdiet.dev/v1/polymarket-prediction-stream)

## Output

Returns a structured object containing live Polymarket orderbook snapshots, implied Yes and No probabilities (as percentages or decimals), total trading volume, and whale/large-trader sentiment indicators for the queried topic or event keyword.

## 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/polymarket-odds-agentdiet-dev-polymarket-live-prediction-market-odds-f0255a0d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from polymarket-odds.agentdiet.dev](https://www.zero.xyz/host/polymarket-odds.agentdiet.dev/llms.txt)