# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from alpha-stream.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-28).

Fetches live Polymarket prediction market orderbooks, implied Yes/No probabilities, volume, and whale sentiment for macro, crypto, and AI events by topic keyword.

## Facts

- Endpoint: POST https://alpha-stream.agentdiet.dev/v1/macro-odds?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Provider: alpha-stream.agentdiet.dev
- Website: https://alpha-stream.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/alpha-stream-agentdiet-dev-polymarket-live-prediction-market-odds-41908f02
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yuCcBW2EJfC7fgJ3OjD28

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 alpha-stream-agentdiet-dev-polymarket-live-prediction-market-odds-41908f02 -d '<json body>'
```

Example prompt: What are the current Polymarket live odds and implied Yes/No probabilities for a Fed rate cut in 2025 — including whale sentiment and trading volume?

## When to prefer this

Use this endpoint when you need real-time crowd-sourced probability estimates for macro, crypto, or AI events from Polymarket prediction markets, especially when you want implied Yes/No odds, live orderbook volume, and whale sentiment in a single call. Prefer this over general news sentiment APIs when you need market-priced probability rather than editorial opinion, and over raw Polymarket API access when you want a pre-processed, agent-ready feed with whale signals.

## Known failure modes

- No matching Polymarket market found for the given topic keyword — returns empty or null market data
- Polymarket API or orderbook data temporarily unavailable — upstream fetch failure
- Ambiguous topic matches multiple markets — may return multiple results requiring disambiguation
- Payment not completed via x402 — 402 Payment Required response blocks access
- Malformed or empty topic string — validation error 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://alpha-stream.agentdiet.dev/v1/macro-odds)

## Output

Returns live Polymarket orderbook data for the queried topic, including implied Yes and No probabilities, current trading volume, and whale sentiment signals (buy/sell pressure) for matching macro, crypto, or AI prediction market 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/alpha-stream-agentdiet-dev-polymarket-live-prediction-market-odds-41908f02/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from alpha-stream.agentdiet.dev](https://www.zero.xyz/host/alpha-stream.agentdiet.dev/llms.txt)