# 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 any macro, crypto, or AI prediction market event by topic keyword.

## Facts

- Endpoint: GET https://serp-extract.agentdiet.dev/v1/prediction-markets?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-375efa4d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5ka9j7rWBG9xbs_mgDlh_

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-375efa4d
```

Example prompt: What are the current Polymarket odds and implied probability for a US recession in 2025 — include volume and whether whales are leaning Yes or No?

## When to prefer this

Use this endpoint when you need real-time crowd-sourced probability estimates from Polymarket for macro, crypto, AI, or political events — especially when you want implied odds, orderbook depth, and whale sentiment in a single call. Prefer this over general news or search endpoints when you specifically need market-implied probabilities rather than editorial opinion or historical data.

## Known failure modes

- Topic query too vague returns no matching markets
- Polymarket API upstream unavailability causes empty or error response
- Misspelled or non-existent market topic returns null results
- Rate limiting or payment failure (402) if USDC micropayment is not provided
- Response schema is generic object — structured fields may vary by market

## 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/prediction-markets)

## Output

Returns a structured object containing live Polymarket orderbook data for the queried topic, including implied Yes and No probabilities (as percentages or decimals), total trading volume, and whale sentiment indicators showing how large traders are positioned on the 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-375efa4d/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)