# Klymax402 Trending Prediction Markets API

> Klymax402 Trending Prediction Markets API is a paid API for AI agents from klymax402.com, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-14).

Fetches currently trending prediction markets from Polymarket and/or Kalshi, ranked by activity or volume.

## Facts

- Endpoint: GET https://klymax402.com/api/prediction-markets/api/trending
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/klymax402-trending-prediction-markets-api-4b437a81
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4ddYrtBoc7yhsVyqGiBOs

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 klymax402-trending-prediction-markets-api-4b437a81
```

Example prompt: Show me the top 15 trending prediction markets from both Polymarket and Kalshi right now.

## When to prefer this

Use this endpoint when you need a quick, ranked view of what's currently trending across Polymarket and/or Kalshi without needing to authenticate with those platforms directly. Prefer this over building direct integrations when you want combined cross-platform trending data in a single call, or when you need a no-API-key solution paid per-use via USDC.

## Known failure modes

- Invalid 'source' value returns an error (must be 'polymarket' or 'kalshi')
- Limit out of range (must be 1-30) may return an error or default behavior
- Upstream Polymarket or Kalshi API unavailability may result in empty or partial results
- Payment failure via x402 protocol blocks request entirely

## How this service works

One MCP endpoint gives your AI agent access to 100 APIs -- crypto, DeFi, web, AI, finance and utilities. No API keys, USDC on Base from $0.003/call.

## Output

Returns a JSON object containing a list of trending prediction markets (up to 30), the source platform(s) they come from, a result count, and a timestamp. Each market entry represents an active, high-engagement market from Polymarket, Kalshi, or both.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "number",
   "description": "Number of trending markets to return (1-30). Default: 10."
  },
  "source": {
   "enum": [
    "polymarket",
    "kalshi"
   ],
   "type": "string",
   "description": "Filter by platform. Omit to get trending markets from both Polymarket and Kalshi."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "source": "example",
  "markets": [],
  "results": 1,
  "timestamp": "example"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/klymax402-trending-prediction-markets-api-4b437a81/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from klymax402.com](https://www.zero.xyz/host/klymax402.com/llms.txt)