# SHA3-384 Digest of UTF-16LE Bytes, Base64-Encoded

> SHA3-384 Digest of UTF-16LE Bytes, Base64-Encoded is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Computes a SHA3-384 cryptographic hash of a UTF-16LE encoded text string and returns it as a base64-encoded digest.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha3-384-base64-utf16?utm_source=zero.xyz
- Price: $0.002/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-digest-of-utf-16le-bytes-base64-encoded-2acacf3e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_T0iw2gWyMsqhqGzsX_cYR

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-digest-of-utf-16le-bytes-base64-encoded-2acacf3e -d '<json body>'
```

Example prompt: Can you compute the SHA3-384 hash of the text 'Hello, World!' using UTF-16LE encoding and give me the result as a base64 string?

## When to prefer this

Choose this endpoint when you specifically need a SHA3-384 hash computed over the UTF-16LE byte encoding of a string, with the result in base64 format — particularly when interoperating with Windows-native systems or other pipelines that use UTF-16LE encoding. Prefer the free sandbox endpoint (/v1/sandbox/digest-sha3-384-base64-utf16) for development and testing before using this paid version.

## Known failure modes

- Empty or missing 'text' field returns a validation error
- Text exceeding 100,000 characters is rejected
- Missing or empty 'key' field may result in authentication failure
- Network or payment failure (x402) if USDC balance is insufficient
- Malformed JSON body returns a 400 error

## How this service works

Call when an agent needs a sha3-384 digest of utf16le bytes, encoded as base64. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-384-base64-utf16 first.

## Output

Returns a base64-encoded SHA3-384 digest computed from the UTF-16LE byte representation of the input text. The response provides a fixed-length cryptographic hash suitable for integrity verification, deduplication, or fingerprinting.

## 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-digest-of-utf-16le-bytes-base64-encoded-2acacf3e/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)