# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from workflows.agentdiet.dev, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-28).

Fetches live Polymarket prediction market orderbooks, implied Yes/No probabilities, volume, and whale sentiment for macro, crypto, and AI events by topic keyword.

## Facts

- Endpoint: POST https://workflows.agentdiet.dev/v1/polymarket-alpha?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Provider: workflows.agentdiet.dev
- Website: https://workflows.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/workflows-agentdiet-dev-polymarket-live-prediction-market-odds-effa9388
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oi5eQ8nxToCGX6E2EVmgZ

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 workflows-agentdiet-dev-polymarket-live-prediction-market-odds-effa9388 -d '<json body>'
```

Example prompt: What are the live Polymarket odds and implied Yes/No probabilities for Bitcoin hitting $100k by end of year — including 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 sourced directly from Polymarket's live orderbooks. It is preferable over news sentiment APIs when you want monetarily-backed probability signals rather than editorial opinion, and over static data APIs when live odds and whale positioning matter. Best suited for agents doing event-driven trading research, market briefings, or probability-weighted decision making.

## Known failure modes

- Topic keyword does not match any active Polymarket market — returns empty or low-confidence results
- Polymarket API or data feed is temporarily unavailable — upstream fetch failure
- Ambiguous topic string matches multiple markets — results may include multiple event rows requiring disambiguation
- Payment via x402 fails or is insufficient — HTTP 402 returned before data is provided
- Rate limiting or quota exhaustion — request rejected with error 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://workflows.agentdiet.dev/v1/polymarket-alpha)

## Output

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

## 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/workflows-agentdiet-dev-polymarket-live-prediction-market-odds-effa9388/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from workflows.agentdiet.dev](https://www.zero.xyz/host/workflows.agentdiet.dev/llms.txt)