# Polymarket Live Prediction Market Odds & Implied Probability Feed

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

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

## Facts

- Endpoint: GET https://mcp-security.agentdiet.dev/v1/macro-odds?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: mcp-security.agentdiet.dev
- Website: https://mcp-security.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/mcp-security-agentdiet-dev-polymarket-live-prediction-market-odds-7b8020e3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pwONIj6dj_muYnWlOakUa

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 mcp-security-agentdiet-dev-polymarket-live-prediction-market-odds-7b8020e3
```

Example prompt: What are the live Polymarket odds and implied Yes/No probabilities for a US recession in 2025 — including volume and whale sentiment?

## When to prefer this

Use this endpoint when you need real-time crowd-sourced probability estimates from Polymarket's prediction markets, particularly for macro economic events, crypto price milestones, political outcomes, or AI-related events. Prefer this over general news search when you want quantified implied probabilities and market-driven sentiment rather than narrative coverage.

## Known failure modes

- Topic keyword too vague or ambiguous returns no matching market
- Polymarket API upstream outage results in stale or empty response
- Payment failure (HTTP 402) if x402 USDC micropayment not fulfilled
- No active market exists for the queried topic
- Rate limiting if called too frequently without valid payment

## 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://mcp-security.agentdiet.dev/v1/macro-odds)

## Output

Returns live Polymarket orderbook data for the queried topic, including implied Yes probability, implied No probability, 24h trading volume, and whale sentiment signals for macro, crypto, political, or AI prediction market 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/mcp-security-agentdiet-dev-polymarket-live-prediction-market-odds-7b8020e3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcp-security.agentdiet.dev](https://www.zero.xyz/host/mcp-security.agentdiet.dev/llms.txt)