# Grokzilla SHA-256 Hash

> Grokzilla SHA-256 Hash is a paid API for AI agents from grokzilla.shop, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-11).

Hashes an input string with SHA-256 and returns the hex digest with a short prefix, computed deterministically with no network calls.

## Facts

- Endpoint: POST https://grokzilla.shop/api/skills/sha256?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/grokzilla-sha-256-hash-1923ca82
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_m49ZODbIJD5E85ytMTdFv

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 grokzilla-sha-256-hash-1923ca82 -d '<json body>'
```

Example prompt: Hash this string with SHA-256 and give me the hex digest: 'Hello, world! This is my test message.'

## When to prefer this

Choose this endpoint when you need a simple, pay-per-call SHA-256 hash computation without standing up your own infrastructure, especially in agent workflows that already use x402 micropayment rails. It is ideal for deterministic fingerprinting, integrity checks, or identifier generation within automated pipelines where installing a local crypto library is undesirable or unavailable.

## Known failure modes

- Input text exceeds the 400,000 character limit — returns a validation error
- Invalid or unsupported encoding value — returns an error indicating the encoding is not recognized
- Empty or missing text field — may return an error or hash of empty string depending on implementation
- Payment failure via x402 — returns HTTP 402 if USDC micropayment is not processed

## How this service works

Hash a string with SHA-256 and return hex plus a short prefix. Deterministic, no network.

## Output

Returns the SHA-256 hash of the input text as a lowercase hexadecimal string, prefixed with a short label. The result is fully deterministic: the same input always yields the same output regardless of when or how many times it is called.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "maxLength": 400000
  },
  "encoding": {
   "type": "string",
   "default": "utf-8",
   "maxLength": 16
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/grokzilla-sha-256-hash-1923ca82/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from grokzilla.shop](https://www.zero.xyz/host/grokzilla.shop/llms.txt)