# 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-compiler.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-21).

Fetches live Polymarket orderbook data, implied Yes/No probabilities, volume, and whale sentiment for a given prediction market topic or event keyword.

## Facts

- Endpoint: GET https://mcp-compiler.agentdiet.dev/v1/polymarket-prediction-stream?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: mcp-compiler.agentdiet.dev
- Website: https://mcp-compiler.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/mcp-compiler-agentdiet-dev-polymarket-live-prediction-market-odds-bb4aa4f6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HurRoRuSlrecav-hq62mi

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-compiler-agentdiet-dev-polymarket-live-prediction-market-odds-bb4aa4f6
```

Example prompt: What are the current Polymarket odds and implied Yes/No probabilities for 'Federal Reserve rate cut in 2025' — including volume and whale sentiment?

## When to prefer this

Choose this endpoint when you need real-time prediction market crowd wisdom — implied probabilities, volume depth, and whale sentiment — specifically from Polymarket's orderbook. Prefer this over general news search when you want probabilistic forecasts rather than narrative coverage, and over static datasets when live, current odds are required for trading signals, macro positioning, or event-driven decision-making.

## Known failure modes

- No matching Polymarket market found for the given topic keyword — returns empty or null market data
- Polymarket API rate limit or upstream outage causes stale or missing orderbook data
- Ambiguous topic string matches multiple markets — may return top result or require more specific query
- Payment failure (x402) if agent wallet lacks sufficient USDC balance
- Malformed or missing 'topic' parameter returns a 400 validation 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://mcp-compiler.agentdiet.dev/v1/polymarket-prediction-stream)

## Output

Returns a structured object containing live Polymarket orderbook data for the queried topic, including implied Yes and No probabilities, total market volume, and whale sentiment indicators derived from large-order activity.

## 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-compiler-agentdiet-dev-polymarket-live-prediction-market-odds-bb4aa4f6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcp-compiler.agentdiet.dev](https://www.zero.xyz/host/mcp-compiler.agentdiet.dev/llms.txt)