# StableJack Market Segment Bias History

> StableJack Market Segment Bias History is a paid API for AI agents from ai.stable-jack.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Retrieves historical positioning data for a named market cohort (e.g. whales, smart money) to reveal segment-level bias over time.

## Facts

- Endpoint: POST https://ai.stable-jack.com/x402/tools/market_segment_bias
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stablejack-market-segment-bias-history-7d63bba2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4WAcL1GXTi-LBe897VcMs

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-market-segment-bias-history-7d63bba2 -d '<json body>'
```

Example prompt: Pull the positioning history for the whales cohort from StableJack so I can see how they've been biased over the past week.

## When to prefer this

Use this endpoint when you need historical cohort-level positioning intelligence — specifically when you want to understand how named segments like whales or smart money have been biased over time. Prefer this over generic market data endpoints when your analysis centers on participant-type behavior rather than price or volume data.

## Known failure modes

- Unknown or unrecognized cohort segment name returns an error or empty result
- Missing required segment parameter causes a 400-level error
- Stale or limited data availability for niche segments
- Payment failure via x402 protocol blocks the call
- Rate limiting if called too frequently

## How this service works

Retrieve positioning history for a named cohort. Pass a known segment such as whales or smart money.

## Output

Returns a time-series of positioning data for the specified market segment cohort, including historical bias indicators showing whether the cohort has been net long, net short, or neutral over the queried period.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stablejack-market-segment-bias-history-7d63bba2/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)