# Polymarket Live Prediction Market Odds & Implied Probability Feed

> Polymarket Live Prediction Market Odds & Implied Probability Feed is a paid API for AI agents from json-repair.agentdiet.dev, paid per call via MPP, $0.015/call, status unknown (last checked 2026-10-21).

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

## Facts

- Endpoint: GET https://json-repair.agentdiet.dev/v1/polymarket-alpha?utm_source=zero.xyz
- Price: $0.015/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: json-repair.agentdiet.dev
- Website: https://json-repair.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/json-repair-agentdiet-dev-polymarket-live-prediction-market-odds-f8845ad7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Cu1Ufze87tY0WFOWWq_Ke

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 json-repair-agentdiet-dev-polymarket-live-prediction-market-odds-f8845ad7
```

Example prompt: What are the live Polymarket odds and implied Yes/No probabilities for Bitcoin hitting $100k this year — including current volume and whale sentiment?

## When to prefer this

Use this endpoint when an agent needs real-time crowd-sourced probability estimates from Polymarket for macro, crypto, political, or AI events — especially when implied market probabilities or whale order-flow sentiment are needed rather than news summaries or analyst forecasts. Prefer this over general news APIs when quantitative probability signals from a live prediction market are required.

## Known failure modes

- Topic keyword matches no active Polymarket markets — empty or null result returned
- Ambiguous topic string matches multiple unrelated markets — response may include irrelevant markets
- Polymarket API upstream outage — request may timeout or return stale data
- Payment failure via x402 — 402 response if USDC balance insufficient
- Very niche or newly created markets may have low liquidity and unreliable orderbook data

## 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://json-repair.agentdiet.dev/v1/polymarket-alpha)

## Output

Returns a JSON object containing live Polymarket orderbook data for the queried topic, including implied Yes and No probabilities, trading volume, and whale sentiment indicators for matching prediction markets.

## 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/json-repair-agentdiet-dev-polymarket-live-prediction-market-odds-f8845ad7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from json-repair.agentdiet.dev](https://www.zero.xyz/host/json-repair.agentdiet.dev/llms.txt)