# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from hn-pulse.agentdiet.dev, paid per call via MPP, $0.015/call, status unknown (last checked 2026-10-21).

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

## Facts

- Endpoint: GET https://hn-pulse.agentdiet.dev/v1/prediction-markets?utm_source=zero.xyz
- Price: $0.015/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: hn-pulse.agentdiet.dev
- Website: https://hn-pulse.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/hn-pulse-agentdiet-dev-polymarket-live-prediction-market-odds-implied-3dbe38ae
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5vdTd8bRv9jiKoxu7fY7C

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 hn-pulse-agentdiet-dev-polymarket-live-prediction-market-odds-implied-3dbe38ae
```

Example prompt: What are the live Polymarket odds and implied Yes/No probability for a US Federal Reserve rate cut happening this quarter — including volume and whale sentiment?

## When to prefer this

Choose this endpoint when you need real-time crowd-sourced probability estimates for binary macro, crypto, political, or AI events sourced directly from Polymarket's orderbooks. It is preferable over static news sources or sentiment APIs when you want market-implied probabilities backed by real money, volume data, and whale activity. Best suited for agents doing financial risk assessment, event-driven trading signals, or real-time briefing generation on uncertain future events.

## Known failure modes

- No matching Polymarket market found for the given topic keyword — returns empty or null result
- Topic string too vague to resolve to a specific market — may return multiple or unrelated markets
- Polymarket data feed unavailable or delayed — stale or error response
- Payment failure via x402 — 402 response requiring USDC payment before data is returned
- Rate limiting or quota exceeded — HTTP 429 or equivalent error

## 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://hn-pulse.agentdiet.dev/v1/prediction-markets)

## Output

Returns a structured object containing live Polymarket orderbook data for the queried topic, including implied Yes/No probabilities, current trading volume, and whale (large trader) sentiment signals for the matched 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/hn-pulse-agentdiet-dev-polymarket-live-prediction-market-odds-implied-3dbe38ae/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from hn-pulse.agentdiet.dev](https://www.zero.xyz/host/hn-pulse.agentdiet.dev/llms.txt)