# 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 2026-10-21).

Fetches live Polymarket prediction market orderbook data including implied Yes/No probabilities, volume, and whale sentiment for a given macro, crypto, or AI event topic.

## Facts

- Endpoint: GET https://alpha-stream.agentdiet.dev/v1/market-odds?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- 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-af4896f8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Z7oUGGcjLepbfMu3MzDkp

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-af4896f8
```

Example prompt: What are the current Polymarket odds and implied Yes/No probability for the US entering a recession this year? Include volume and any whale sentiment signals.

## When to prefer this

Choose this endpoint when you need live, real-time crowd-sourced probability estimates for macro, crypto, or AI events sourced directly from Polymarket's orderbook — especially when you want not just price odds but also trading volume and whale sentiment signals. Prefer this over news or analyst sources when you want market-implied probabilities rather than editorial opinion.

## Known failure modes

- No matching market found for the given topic keyword — returns empty or null result
- Polymarket data feed latency or downtime causing stale or unavailable odds
- Ambiguous topic string matching multiple unrelated markets
- Payment failure via x402 protocol resulting in 402 response and no data
- Rate limiting or quota exhaustion returning an error response

## 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/market-odds)

## Output

Returns a structured object containing live Polymarket orderbook data for the queried topic, including implied Yes/No probabilities, current trading volume, and whale sentiment indicators for 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-af4896f8/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)