# 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 prediction market orderbooks, implied Yes/No probabilities, volume, and whale sentiment for a given macro, crypto, or AI event topic.

## Facts

- Endpoint: GET https://mcp-security.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: 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-f548e5b1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CmcuZbqNw_BTpca0SwH2b

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-f548e5b1
```

Example prompt: What are the live Polymarket odds and implied Yes/No probability for Bitcoin reaching $150k before the end of 2025, including current 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. Prefer it over news sentiment or LLM-based forecasting when you want market-implied odds backed by actual money. Ideal for agents doing event-driven trading research, scenario probability analysis, or live market monitoring.

## Known failure modes

- No matching Polymarket market found for the given topic keyword — returns empty or null results
- Ambiguous topic string matches multiple markets — agent may need to refine the query
- Polymarket API upstream downtime causes stale or failed data retrieval
- Payment required (HTTP 402) if x402 micropayment not fulfilled
- Rate limiting if called too frequently without valid payment headers

## 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/market-odds)

## Output

Returns live Polymarket orderbook data for the queried topic, including implied Yes and No probabilities, trading volume, and whale sentiment indicators 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/mcp-security-agentdiet-dev-polymarket-live-prediction-market-odds-f548e5b1/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)