# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from defi-yield.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 any macro, crypto, or AI prediction market topic.

## Facts

- Endpoint: GET https://defi-yield.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: defi-yield.agentdiet.dev
- Website: https://defi-yield.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/defi-yield-agentdiet-dev-polymarket-live-prediction-market-odds-62e3c9d7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BhhN43Y3nBRNIKOgFRjXw

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 defi-yield-agentdiet-dev-polymarket-live-prediction-market-odds-62e3c9d7
```

Example prompt: What are the live Polymarket odds and implied probabilities right now for Bitcoin reaching $150k by the end of 2025 — including volume and whether whales are leaning yes or no?

## When to prefer this

Use this endpoint when you need real-time crowd-sourced probability estimates for macro, crypto, political, or AI events as reflected by actual money on Polymarket. Prefer this over news sentiment or analyst forecasts when you want market-implied probabilities backed by real capital and want whale positioning context. Best when the question can be framed as a binary Yes/No outcome.

## Known failure modes

- No matching Polymarket market found for the given topic keyword — returns empty or null results
- Polymarket API unavailable or rate-limited — upstream timeout or 5xx error
- Ambiguous topic keyword matching multiple markets — may return unintended market data
- Market has already resolved — data may reflect final outcome rather than live odds
- Payment not processed (x402) — endpoint returns 402 Payment Required before data is returned

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

## Output

Returns live Polymarket orderbook data for the queried topic, including implied Yes and No probabilities (as percentages or decimals), 24h trading volume, whale sentiment indicators, and relevant market metadata such as event name and resolution criteria.

## 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/defi-yield-agentdiet-dev-polymarket-live-prediction-market-odds-62e3c9d7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from defi-yield.agentdiet.dev](https://www.zero.xyz/host/defi-yield.agentdiet.dev/llms.txt)