# 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 2026-10-23).

Fetches live Polymarket prediction market orderbook data, implied Yes/No probabilities, trading volume, and whale sentiment for macro, crypto, and AI-related events.

## Facts

- Endpoint: POST https://polymarket-odds.agentdiet.dev/v1/polymarket-prediction-stream?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- 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-1d517ace
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6XTeWGsG_V4rMCjnlSspS

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-1d517ace -d '<json body>'
```

Example prompt: What are the current live Polymarket odds and implied Yes/No probability for the Fed cutting rates at the next FOMC meeting — also show me any whale sentiment signals?

## When to prefer this

Use this endpoint when you need real-time crowd-sourced probability estimates for binary macro, crypto, geopolitical, or AI events — especially when you want market-implied odds rather than model-generated forecasts. Prefer this over news sentiment APIs when you want actual money-weighted conviction signals, and over static data sources when you need live orderbook depth and whale activity. Best suited for agents making decisions that benefit from knowing what sophisticated traders are collectively pricing in for near-term events.

## Known failure modes

- No matching Polymarket market found for the given topic keyword — returns empty or null results
- Polymarket API or orderbook data temporarily unavailable — upstream timeout or connection error
- Ambiguous topic keyword matching multiple markets — may return multiple results or best-guess match
- Payment failure via x402 protocol — call not executed if USDC micropayment rejected
- Stale or low-liquidity market data for niche topics — probabilities may not reflect active trading

## 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/polymarket-prediction-stream)

## Output

Returns live Polymarket prediction market data including implied Yes and No probabilities derived from the orderbook, current trading volume, whale sentiment or accumulation signals, and related market metadata for the queried topic or event keyword.

## 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-1d517ace/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)