# 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 orderbook data, implied Yes/No probabilities, trading volume, and whale sentiment for macro, crypto, and AI prediction market events by topic keyword.

## Facts

- Endpoint: GET https://alpha-stream.agentdiet.dev/v1/polymarket-live-odds-feed?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-317e2310
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KVd71xY63Sn3eIlAbEgar

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-317e2310
```

Example prompt: What are the current Polymarket odds and implied probability for the Fed cutting interest rates this month — and is there any whale activity or volume signal worth noting?

## When to prefer this

Choose this endpoint when you need real-time crowd-sourced probability estimates from active prediction market traders, especially for macro events, crypto milestones, AI policy, or geopolitical questions. It is preferred over news sentiment or analyst forecasts when you want market-implied probabilities backed by financial stakes. Best used when you want to understand what informed traders are actually betting on, not just what pundits are saying.

## Known failure modes

- Topic keyword too vague — no matching Polymarket market found, returns empty or error response
- Market topic has low liquidity — probabilities may be unreliable or spread is wide
- Polymarket API unavailable or rate-limited — endpoint returns upstream error
- Query returns stale data if market has recently resolved or been delisted
- Payment failure via x402 — call not executed if USDC micropayment not processed

## 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/polymarket-live-odds-feed)

## Output

Returns live orderbook data from Polymarket for the queried topic, including implied Yes/No probabilities (as percentages or decimals), current trading volume, and whale sentiment indicators reflecting large-position trader activity on the relevant prediction market event.

## 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-317e2310/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)