# SHA3-256 / Base32 / UTF-16LE Digest

> SHA3-256 / Base32 / UTF-16LE Digest is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-02).

Computes a SHA3-256 hash of UTF-16LE encoded text and returns the result as a Base32 string

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha3-256-base32-utf16?utm_source=zero.xyz
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sha3-256-base32-utf-16le-digest-cc01b2fe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SAjMxzxWgZu6t4NOie6fT

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 sha3-256-base32-utf-16le-digest-cc01b2fe -d '<json body>'
```

Example prompt: Can you hash the text 'Hello, World!' using SHA3-256 over its UTF-16LE bytes and give me the result encoded as Base32?

## When to prefer this

Choose this endpoint when you specifically need the SHA3-256 algorithm (not SHA2/SHA512) applied to text encoded as UTF-16LE bytes (common in Windows and .NET ecosystems) with output in Base32 format (case-insensitive, alphanumeric, no padding ambiguity). Prefer the free sandbox endpoint (/v1/sandbox/digest-sha3-256-base32-utf16) first; use this paid endpoint when the sandbox is unavailable or rate-limited.

## Known failure modes

- Empty or missing text input returns a validation error
- Text exceeding 100,000 characters is rejected
- Missing or empty key field causes a request error
- Invalid USDC payment or insufficient funds results in a 402 Payment Required
- Network timeouts on large inputs near the character limit

## How this service works

Call when an agent needs a sha3-256 digest of utf16le bytes, encoded as base32. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-256-base32-utf16 first.

## Output

Returns a Base32-encoded string representing the SHA3-256 digest of the input text treated as UTF-16LE bytes. The output is a fixed-length uppercase Base32 string suitable for use as a checksum, fingerprint, or unique identifier.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "key": {
   "type": "string",
   "maxLength": 512,
   "minLength": 1,
   "description": "HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored."
  },
  "text": {
   "type": "string",
   "examples": [
    "hello"
   ],
   "maxLength": 100000,
   "minLength": 1,
   "description": "Message to digest. For raw-hex SKUs this is hex bytes; for utf16 or latin1 SKUs it is decoded with that encoding. Otherwise it is UTF-8 text."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sha3-256-base32-utf-16le-digest-cc01b2fe/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentshelf.syntexa.ch](https://www.zero.xyz/host/agentshelf.syntexa.ch/llms.txt)