# SHA3-384 Digest → Base64 (from Hex Bytes)

> SHA3-384 Digest → Base64 (from Hex Bytes) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-02).

Computes a SHA3-384 cryptographic hash of raw hex-encoded bytes and returns the digest encoded as base64.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha3-384-base64-rawhex?utm_source=zero.xyz
- Price: $0.004/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-base64-from-hex-bytes-2ebe2f59
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hdaTLeP2LKSYwpz6mXlRn

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-base64-from-hex-bytes-2ebe2f59 -d '<json body>'
```

Example prompt: Hash these hex bytes using SHA3-384 and give me the result as base64: 'deadbeef0102030405060708090a0b0c'.

## When to prefer this

Choose this endpoint when you specifically need a SHA3-384 (not SHA-256, SHA-512, or MD5) digest of raw bytes supplied as hex and want the output in base64 encoding. It is a pure computation with no network calls and no LLM — ideal for deterministic, reproducible cryptographic fingerprinting of binary data. Use the free sandbox variant (/v1/sandbox/digest-sha3-384-base64-rawhex) first to avoid charges during development.

## Known failure modes

- Invalid hex string (odd-length or non-hex characters) returns an error
- Exceeds maxLength of 100000 characters for the text field
- Missing required input fields returns a validation error
- Payment failure or insufficient USDC balance returns 402

## How this service works

Call when an agent needs a sha3-384 digest of hex bytes, encoded as base64. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-384-base64-rawhex first.

## Output

Returns a base64-encoded SHA3-384 digest of the provided hex-byte input. The response is a compact, URL-safe base64 string representing the 48-byte (384-bit) hash of the raw bytes decoded from the input hex string.

## 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": [
    "68656c6c6f"
   ],
   "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-base64-from-hex-bytes-2ebe2f59/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)