# SHA3-384 Hex Digest (UTF-16LE)

> SHA3-384 Hex Digest (UTF-16LE) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-02).

Computes a SHA3-384 hash of a text string encoded as UTF-16LE bytes and returns it as a lowercase hex string.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha3-384-hex-utf16?utm_source=zero.xyz
- Price: $0.009/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sha3-384-hex-digest-utf-16le-86f947b9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BoiZJYIeYs18MqlmpzImq

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 sha3-384-hex-digest-utf-16le-86f947b9 -d '<json body>'
```

Example prompt: Can you compute a SHA3-384 hex digest of the text 'Hello, World!' using UTF-16LE encoding? My key is 'myapikey123'.

## When to prefer this

Choose this endpoint when you specifically need a SHA3-384 digest computed over UTF-16LE byte representation of text and want the result as hex. This is distinct from SHA3-384 over UTF-8, SHA-256, or other hash algorithms. Prefer the sandbox unpaid endpoint (/v1/sandbox/digest-sha3-384-hex-utf16) for testing; use this paid endpoint for production workloads requiring SHA3-384 with UTF-16LE byte encoding.

## Known failure modes

- Text exceeds 100,000 character limit — returns validation error
- Missing or empty text or key fields — returns 400 bad request
- Invalid UTF-16LE encoding edge cases with certain Unicode characters may produce unexpected results
- Payment failure via x402 protocol — returns 402 Payment Required before processing

## How this service works

Call when an agent needs a sha3-384 digest of utf16le bytes, encoded as hex. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-384-hex-utf16 first.

## Output

A SHA3-384 cryptographic hash digest of the input text (encoded as UTF-16LE bytes), returned as a lowercase hexadecimal string. The digest is 96 hex characters long (384 bits).

## 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/sha3-384-hex-digest-utf-16le-86f947b9/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)