# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from defi-yield.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-23).

Fetches live implied Yes/No probabilities, orderbook data, volume, and whale sentiment from Polymarket prediction markets for any macro, crypto, or AI event topic.

## Facts

- Endpoint: POST https://defi-yield.agentdiet.dev/v1/polymarket-feed?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: defi-yield.agentdiet.dev
- Website: https://defi-yield.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/defi-yield-agentdiet-dev-polymarket-live-prediction-market-odds-fa9a83fe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Q3Je91iTCB5VZEC1hvQ9D

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 defi-yield-agentdiet-dev-polymarket-live-prediction-market-odds-fa9a83fe -d '<json body>'
```

Example prompt: What are the current Polymarket live odds and implied Yes/No probabilities for a Federal Reserve interest rate cut happening this year — 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 market for macro events, crypto milestones, AI policy, or geopolitical outcomes — especially when you want orderbook depth and whale sentiment alongside raw odds. Prefer this over news sentiment or analyst forecasts when quantified market-implied probability is needed.

## Known failure modes

- Topic keyword too vague — no matching Polymarket market found
- Polymarket API unavailable or rate-limited — stale or empty response
- Market has resolved or expired — no live orderbook data returned
- Payment not processed correctly — HTTP 402 returned without data
- Ambiguous topic matches multiple markets — results may include unintended markets

## 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://defi-yield.agentdiet.dev/v1/polymarket-feed)

## Output

Returns live Polymarket orderbook data including implied Yes probability, implied No probability, total trading volume, and whale sentiment signals for the queried event topic or market question.

## 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/defi-yield-agentdiet-dev-polymarket-live-prediction-market-odds-fa9a83fe/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from defi-yield.agentdiet.dev](https://www.zero.xyz/host/defi-yield.agentdiet.dev/llms.txt)