# StableJack Perpetual Asset Screener

> StableJack Perpetual Asset Screener is a paid API for AI agents from ai.stable-jack.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Screens perpetual futures markets to surface top opportunities based on funding rates, positioning, and momentum signals.

## Facts

- Endpoint: POST https://ai.stable-jack.com/x402/tools/perpetual_asset_screener
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stablejack-perpetual-asset-screener-2dbf974f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ILaqoEcySmG3OKwRNW92t

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 stablejack-perpetual-asset-screener-2dbf974f -d '<json body>'
```

Example prompt: Screen perpetual futures markets right now and show me the top opportunities — I want to see which perps have the most notable funding rates, positioning skew, or momentum signals worth acting on.

## When to prefer this

Use this endpoint when you need a broad, ranked view across multiple perpetual futures markets simultaneously rather than a deep dive on a single asset. Prefer it for systematic opportunity scanning, funding rate arbitrage discovery, and pre-trade market context checks. Choose sibling endpoints (predicted funding rates, crowd positioning, market pair comparison) for more targeted single-asset or pair-level analysis.

## Known failure modes

- Missing or invalid screening parameters may return empty results or a 400 error
- Payment not included or insufficient USDC (requires $0.05 per call) results in 402 Payment Required
- Upstream data source unavailability may cause stale or incomplete screening results
- Rate limiting may occur under high-frequency polling

## How this service works

Retrieve perpetual asset screener through StableJack's agent-ready research API.

## Output

Returns a ranked list of perpetual futures contracts with associated screening signals including funding rates, crowd positioning metrics, momentum indicators, and opportunity scores that help identify the most notable trading setups across perpetual markets.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stablejack-perpetual-asset-screener-2dbf974f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ai.stable-jack.com](https://www.zero.xyz/host/ai.stable-jack.com/llms.txt)