# PROWL Prediction Market Volume & Liquidity Rankings

> PROWL Prediction Market Volume & Liquidity Rankings is a paid API for AI agents from www.prowldata.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Returns trading volume and liquidity rankings across all prediction market platforms, highlighting the most actively traded markets, largest bets, and sudden volume spikes.

## Facts

- Endpoint: POST https://www.prowldata.dev/api/v1/markets/volume
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/www-prowldata-dev-aa82b7dc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KkIdiMm0sL1bPVPgug7MO

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 www-prowldata-dev-aa82b7dc -d '<json body>'
```

Example prompt: What are the most actively traded prediction markets right now across all platforms — especially any with sudden volume spikes that might signal breaking news or unusual activity?

## When to prefer this

Use this endpoint when you need to know where trading activity is concentrated across prediction markets, detect unusual volume surges that may indicate breaking news or coordinated betting, or compare liquidity across platforms. Prefer this over the live probabilities endpoint when the goal is market activity and money flow rather than current odds.

## Known failure modes

- No markets match the specified filters — returns empty result set
- Platform data temporarily unavailable — partial results with source gaps noted
- Invalid filter parameters — returns 400 error with parameter validation message
- Payment not processed — returns 402 requiring $0.001 USDC payment
- Rate limit exceeded — returns 429 with retry-after header

## How this service works

Trading volume and liquidity rankings across all prediction market platforms. Find the most actively traded markets, biggest bets, and where money is flowing. Spot sudden volume spikes that signal breaking news or insider activity. Powered by PROWL. Use this to answer 'what are people betting on right now?' or 'which prediction markets have the most money?'

## Output

A ranked list of prediction markets sorted by trading volume and liquidity, including market names, platforms, volume figures, liquidity depth, and flagged volume spikes that may indicate breaking news or unusual betting activity.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/www-prowldata-dev-aa82b7dc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.prowldata.dev](https://www.zero.xyz/host/www.prowldata.dev/llms.txt)