# SHA-384 Digest of UTF-16LE Bytes, Base64URL-Encoded

> SHA-384 Digest of UTF-16LE Bytes, Base64URL-Encoded is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).

Computes a SHA-384 cryptographic hash of text encoded as UTF-16LE bytes and returns the digest encoded as base64url

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha384-base64url-utf16?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sha-384-digest-of-utf-16le-bytes-base64url-encoded-83ab24a2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XmepWnk3PPsg27ZPDM8kL

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 sha-384-digest-of-utf-16le-bytes-base64url-encoded-83ab24a2 -d '<json body>'
```

Example prompt: Can you compute the SHA-384 hash of the text 'Hello, World!' treating it as UTF-16LE bytes and give me the result as a base64url string?

## When to prefer this

Choose this endpoint when you specifically need a SHA-384 hash computed over UTF-16LE byte encoding (common in Windows and .NET environments) with a base64url-safe output format. Prefer the free sandbox variant (/v1/sandbox/digest-sha384-base64url-utf16) first. Use this paid endpoint when the sandbox is unavailable or when production reliability is required. If you need a different encoding (hex, base32, base64 non-URL-safe) or a different algorithm (SHA3-384, SHA3-512), use the corresponding sibling endpoint.

## Known failure modes

- Text exceeds 100,000 character limit — request rejected
- Key string missing or empty — validation error
- Text string missing or empty — validation error
- Key exceeds 512 character limit — validation error
- Payment of $0.003 USDC not provided or invalid — 402 Payment Required
- Malformed request body — 400 Bad Request

## How this service works

Call when an agent needs a sha384 digest of utf16le bytes, encoded as base64url. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-sha384-base64url-utf16 first.

## Output

Returns a base64url-encoded SHA-384 hash digest computed over the UTF-16LE byte representation of the input text. The output is a URL-safe, compact string suitable for use in headers, tokens, or integrity checks.

## 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/sha-384-digest-of-utf-16le-bytes-base64url-encoded-83ab24a2/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)