# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from x402-audit.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-28).

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

## Facts

- Endpoint: POST https://x402-audit.agentdiet.dev/v1/polymarket-prediction-stream?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Provider: x402-audit.agentdiet.dev
- Website: https://x402-audit.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/x402-audit-agentdiet-dev-polymarket-live-prediction-market-odds-d3a08dd2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6aQqEgO_hTJE5JGoOEoJe

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 x402-audit-agentdiet-dev-polymarket-live-prediction-market-odds-d3a08dd2 -d '<json body>'
```

Example prompt: What are the current live Polymarket odds and implied Yes/No probabilities for a Federal Reserve rate cut in 2025, 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 as priced by Polymarket traders and whales. Prefer this over static news sentiment or analyst forecasts when you want market-implied probabilities with volume and whale activity context. Best for agents that need live event probability data for decision-making, trading signals, or forecasting workflows.

## Known failure modes

- Topic keyword matches no active Polymarket market — returns empty or null results
- Polymarket API upstream unavailability causes timeout or error response
- Ambiguous topic keyword matches multiple markets — returns multiple or unexpected results
- Payment not processed (402) — endpoint requires $0.01 USDC payment per call
- Rate limiting or overload returns 429 or 503 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://x402-audit.agentdiet.dev/v1/polymarket-prediction-stream)

## Output

Returns a structured object containing live Polymarket orderbook data, implied Yes and No probabilities (as percentages or decimals), total trading volume, and whale/large-trader sentiment signals for the queried prediction market 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/x402-audit-agentdiet-dev-polymarket-live-prediction-market-odds-d3a08dd2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-audit.agentdiet.dev](https://www.zero.xyz/host/x402-audit.agentdiet.dev/llms.txt)