# LavaRND Lava Entropy Score

> LavaRND Lava Entropy Score is a paid API for AI agents from lavarnd.up.railway.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Calculates the Shannon entropy of 1024 randomly sampled pixels from live lava lamp images to measure randomness quality.

## Facts

- Endpoint: POST https://lavarnd.up.railway.app/lava-entropy
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lavarnd-up-railway-app-b4f0d593
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_g7sTS7-QSrp-4g7cFMitL

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 lavarnd-up-railway-app-b4f0d593 -d '<json body>'
```

Example prompt: Calculate the Shannon entropy score of 1024 randomly sampled pixels from the live lava lamp feed so I can assess the quality of its randomness.

## When to prefer this

Use this endpoint when you need to verify or audit the randomness quality of lava lamp pixel data specifically using Shannon entropy as the metric, rather than just generating a random hash or password. Ideal for applications that require a measurable entropy score as evidence of randomness quality.

## Known failure modes

- Lava lamp camera feed unavailable or offline — service error
- Insufficient pixel data returned from live image — computation fails
- Network timeout reaching the Railway-hosted endpoint
- Payment of 0.001 USDC not processed — 402 Payment Required

## How this service works

Lava Entropy Score - Calculate Shannon entropy of 1024 randomly sampled pixels.

## Output

Returns a Shannon entropy value computed from 1024 randomly sampled pixels captured from live lava lamp images, indicating the degree of randomness in the physical source.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [],
 "properties": {}
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/lavarnd-up-railway-app-b4f0d593/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from lavarnd.up.railway.app](https://www.zero.xyz/host/lavarnd.up.railway.app/llms.txt)