# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from serp-extract.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 macro, crypto, or AI event topic.

## Facts

- Endpoint: GET https://serp-extract.agentdiet.dev/v1/polymarket-alpha?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: serp-extract.agentdiet.dev
- Website: https://serp-extract.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/serp-extract-agentdiet-dev-polymarket-live-prediction-market-odds-28dc9be3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mUmEVQYTLmKPCTqCPZDDi

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 serp-extract-agentdiet-dev-polymarket-live-prediction-market-odds-28dc9be3
```

Example prompt: What are the live Polymarket odds and implied Yes/No probabilities for Bitcoin crossing $150k before the end of 2025, including current volume and whale sentiment?

## When to prefer this

Choose this endpoint when you need real-time crowd-sourced probability estimates for binary macro, crypto, political, or AI events, particularly when you want market-implied odds rather than model predictions. It is ideal for agents monitoring live event probabilities, performing sentiment analysis on prediction markets, or incorporating Polymarket whale activity into financial decision logic. Prefer this over news search endpoints when you want a quantified probability signal, not narrative coverage.

## Known failure modes

- No matching Polymarket market found for the given topic keyword — returns empty or null result
- Topic is too ambiguous and matches multiple unrelated markets — may return mixed or irrelevant data
- Polymarket API or data feed is temporarily unavailable — upstream timeout or error
- Payment failure via x402 protocol — call not executed if USDC payment is rejected
- Rate limiting or quota exceeded — HTTP 429 or 402 payment required response

## 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://serp-extract.agentdiet.dev/v1/polymarket-alpha)

## Output

Returns live Polymarket orderbook data for the queried topic, including implied Yes and No probabilities, total trading volume, whale/large-trader sentiment indicators, and metadata about the matching prediction market event.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "topic"
 ],
 "properties": {
  "limit": {
   "type": "integer",
   "default": 20,
   "maximum": 100,
   "minimum": 1,
   "description": "Maximum number of items to return per page (1-100)"
  },
  "topic": {
   "type": "string",
   "minLength": 1,
   "description": "Prediction market topic, event keyword, or question to query live Polymarket odds"
  },
  "cursor": {
   "type": "string",
   "description": "Opaque pagination cursor for fetching the next page"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/serp-extract-agentdiet-dev-polymarket-live-prediction-market-odds-28dc9be3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from serp-extract.agentdiet.dev](https://www.zero.xyz/host/serp-extract.agentdiet.dev/llms.txt)