# WickedAPI Polymarket Prediction Markets Data

> WickedAPI Polymarket Prediction Markets Data is a paid API for AI agents from api.wickedapi.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-28).

Retrieves live Polymarket prediction market data including per-outcome probabilities, volume, liquidity, bid/ask spreads, price changes, and end dates — with filtering by top volume, liquidity, soonest end, or free-text search.

## Facts

- Endpoint: GET https://api.wickedapi.com/v1/polymarket?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/wickedapi-polymarket-prediction-markets-data-46be857d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_A0tLUt7ohmXIyYeTKZHbH

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 wickedapi-polymarket-prediction-markets-data-46be857d
```

Example prompt: What are the top Polymarket prediction markets by volume right now — show me the question, current outcome probabilities, liquidity, and when each market ends?

## When to prefer this

Use this endpoint when you need live Polymarket-specific prediction market data with rich detail including bid/ask spreads, liquidity metrics, and volume breakdowns. Prefer it over generic news or sentiment APIs when you need quantified, crowd-sourced probability estimates on real-world events with actual financial stakes. Ideal for agents doing event probability research, trading signal generation, or market monitoring on Polymarket.

## Known failure modes

- No markets found matching the search query — returns empty result set
- Invalid sort parameter returns error or defaults to volume
- Service unavailable or upstream Polymarket data outage — returns 5xx error
- Rate limiting if called excessively — returns 429 error
- Payment not processed correctly via x402 — returns 402 Payment Required

## How this service works

Polymarket prediction markets with live probabilities: question, per-outcome probability, 24h and total volume, liquidity, best bid/ask, one-day price change and end date. Top markets by volume, liquidity or soonest end, or free-text search.

## Output

Returns a list of Polymarket prediction market records, each containing the market question, per-outcome probability percentages, 24-hour and total trading volume, liquidity depth, best bid and ask prices, one-day price change, and the market's end/resolution date.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/wickedapi-polymarket-prediction-markets-data-46be857d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.wickedapi.com](https://www.zero.xyz/host/api.wickedapi.com/llms.txt)