# LavaRnd SHA256 - Lava Lamp Entropy-Based SHA256 Hash

> LavaRnd SHA256 - Lava Lamp Entropy-Based SHA256 Hash is a paid API for AI agents from lavarnd.up.railway.app, paid per call via x402, $0.001/call, status down (last checked 2026-09-15).

Generates a SHA256 hash string derived from 512 random pixels sampled from live lava lamp camera feeds, producing true hardware entropy.

## Facts

- Endpoint: POST https://lavarnd.up.railway.app/lava-sha256
- Price: $0.001/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lavarnd-up-railway-app-9725e220
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_o88_cpKEcCTASNuA5QpHS

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-9725e220 -d '<json body>'
```

Example prompt: Generate me a truly random SHA256 hash using lava lamp entropy — I need one right now for a nonce.

## When to prefer this

Prefer this endpoint when you need a SHA256 hash grounded in true physical hardware entropy (lava lamp pixel randomness) rather than pseudo-random number generation. Ideal for cryptographic nonces, one-time tokens, seeds, or any context where predictability is a security concern and you want a physically-derived, unpredictable hash.

## Known failure modes

- Camera feed unavailable — live lava lamp stream offline
- Insufficient pixel samples from live feed
- Payment not processed or x402 auth failure
- Service temporarily unavailable on Railway deployment
- Timeout if lava lamp image capture is delayed

## How this service works

Lava SHA256 - A SHA256 string using 512 random pixels of live images of our lava lamps.

## Output

Returns a SHA256 hash string computed from 512 randomly sampled pixels of live lava lamp camera footage, providing a physically-sourced unpredictable 64-character hexadecimal hash.

## 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-9725e220/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)