# StableJack Perpetual Market Context API

> StableJack Perpetual Market Context API 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).

Retrieves perpetual futures market context data including funding rates, positioning, and market conditions for crypto perpetual markets via StableJack's agent-ready research API.

## Facts

- Endpoint: POST https://ai.stable-jack.com/x402/tools/perpetual_market_context
- 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-market-context-api-fd29deac
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bbcVEjcmDJidox9ZdetK_

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-market-context-api-fd29deac -d '<json body>'
```

Example prompt: Pull the perpetual market context for BTC from StableJack — I need the current funding rate environment, open interest trends, and overall market conditions for perps.

## When to prefer this

Choose this endpoint when you need a comprehensive perpetual futures market context — including funding rates, open interest, and positioning data — for a specific crypto asset, especially when building AI-driven trading workflows, research reports, or automated monitoring agents that need structured, agent-ready data. Prefer this over generic market data APIs when you specifically need perpetuals context in a pre-structured format optimized for agent consumption.

## Known failure modes

- Invalid or unsupported market/asset symbol returns an error or empty result
- Payment failure via x402 protocol prevents API access
- Rate limiting if too many requests are made in quick succession
- Missing required input parameters (e.g. market identifier) causes a validation error
- Stale data if the underlying data source has not refreshed recently

## How this service works

Retrieve perpetual market context through StableJack's agent-ready research API.

## Output

Returns structured perpetual market context data including funding rate metrics, open interest levels, market sentiment signals, and other relevant perpetual futures conditions for the requested asset or market.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stablejack-perpetual-market-context-api-fd29deac/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)