# LavaRNG SHA3-256 Hash Generator

> LavaRNG SHA3-256 Hash Generator 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 SHA3-256 hash derived from 512 random pixels sampled from live lava lamp images, providing hardware-based true random entropy.

## Facts

- Endpoint: POST https://lavarnd.up.railway.app/lava-sha3-256
- 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-9e5fb695
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4-S_ruvbZYUX5paAFWuGD

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-9e5fb695 -d '<json body>'
```

Example prompt: Give me a SHA3-256 hash seeded from live lava lamp pixel entropy — I need a truly random, physically-sourced hash value I can use as a nonce or unique token.

## When to prefer this

When you need a SHA3-256 hash backed by physical true randomness (not PRNG), especially for cryptographic nonces, unique tokens, or entropy seeding where algorithmic randomness is insufficient. Prefer this over SHA256 variant when SHA3 compliance is required.

## Known failure modes

- Camera feed unavailable — lava lamp image source offline, no pixels to sample
- Payment failure — x402 micropayment of $0.001 USDC not completed or rejected
- Service unavailable on Railway deployment — 503 or timeout
- Malformed request body causing 400 error

## How this service works

Lava SHA3-256 - A SHA3-256 string using 512 random pixels of live images of our lava lamps.

## Output

Returns a SHA3-256 hash string computed from 512 randomly sampled pixels taken from live lava lamp camera feeds, providing a true-random, hardware-entropy-backed cryptographic hash.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/lavarnd-up-railway-app-9e5fb695/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)