# brack-hive Output Entropy

> brack-hive Output Entropy is a paid API for AI agents from brack-hive.tail4f568d.ts.net, paid per call via x402, $0.001000/call, status unknown (last checked 2026-10-22).

Generates or measures output entropy for a given input via a POST request on a Tailscale-hosted node

## Facts

- Endpoint: POST https://brack-hive.tail4f568d.ts.net/output-entropy?utm_source=zero.xyz
- Price: $0.001000/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/brack-hive-tail4f568d-ts-net-4e136000
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DJZqNWQpdCyC4R1x0nQzC

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 brack-hive-tail4f568d-ts-net-4e136000 -d '<json body>'
```

Example prompt: Can you compute the output entropy for this string: 'hello world test data 12345' and tell me how random or unpredictable it is?

## When to prefer this

Use this endpoint when you need a quick, pay-per-call entropy computation for small data inputs, especially in agentic pipelines that require on-demand randomness quantification without setting up a full cryptographic library. Suitable for one-off entropy checks.

## Known failure modes

- Empty or missing request body returns 400 Bad Request
- Payment not included or insufficient results in 402 Payment Required
- Server unavailable or Tailscale node offline returns 503
- Malformed input data may return 422 Unprocessable Entity

## Output

Returns a numerical entropy score or entropy-related metrics indicating the degree of randomness or unpredictability in the submitted input data.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/brack-hive-tail4f568d-ts-net-4e136000/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from brack-hive.tail4f568d.ts.net](https://www.zero.xyz/host/brack-hive.tail4f568d.ts.net/llms.txt)