# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from polymarket-odds.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

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

## Facts

- Endpoint: GET https://polymarket-odds.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: polymarket-odds.agentdiet.dev
- Website: https://polymarket-odds.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/polymarket-odds-agentdiet-dev-polymarket-live-prediction-market-odds-3d114bb3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DQI86H7YNVIh8cYDQfTWU

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 polymarket-odds-agentdiet-dev-polymarket-live-prediction-market-odds-3d114bb3
```

Example prompt: What are the live Polymarket odds and implied Yes/No probabilities for Bitcoin ETF approval this year — including volume and whale sentiment?

## When to prefer this

Use this endpoint when you need real-time, crowd-sourced probability estimates for macro, crypto, political, or AI events and want Polymarket's live orderbook data rather than news sentiment or analyst forecasts. Prefer this over general news APIs when quantified market-implied probability and trading volume are needed.

## Known failure modes

- No matching Polymarket market found for the given topic — returns empty or null results
- Topic keyword too broad or ambiguous, returning unrelated markets
- Payment failure via x402 protocol blocking the request
- Polymarket API downtime or rate limiting causing stale or unavailable data
- Topic references a resolved/closed market with no live orderbook

## 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://polymarket-odds.agentdiet.dev/v1/market-odds)

## Output

Returns live Polymarket orderbook data for the queried topic, including implied Yes and No probabilities as percentages, total trading volume, and whale/large-trader sentiment signals, enabling agents to assess crowd-sourced probability estimates for future 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/polymarket-odds-agentdiet-dev-polymarket-live-prediction-market-odds-3d114bb3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from polymarket-odds.agentdiet.dev](https://www.zero.xyz/host/polymarket-odds.agentdiet.dev/llms.txt)