# SHA3-384 Hex-Bytes-to-Hex Digest

> SHA3-384 Hex-Bytes-to-Hex Digest is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-24).

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

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha3-384-hex-rawhex?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sha3-384-hex-bytes-to-hex-digest-f9c52d56
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_peX7OlcOMIPBXnXo9O7XB

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-bytes-to-hex-digest-f9c52d56 -d '<json body>'
```

Example prompt: Compute the SHA3-384 hash of these raw hex bytes — '48656c6c6f' — and give me the result as a hex string.

## When to prefer this

Choose this endpoint when you specifically need to hash raw binary data that is already hex-encoded (i.e. the input is hex bytes, not UTF-8 text) and want the SHA3-384 output as a hex string. Use the free sandbox endpoint POST /v1/sandbox/digest-sha3-384-hex-rawhex first if available; only call this paid endpoint when the sandbox is unavailable or you need production-grade reliability. Prefer this over SHA2/MD5/BLAKE2 siblings when SHA3-384 strength is required by your protocol or compliance requirements.

## Known failure modes

- Invalid hex input (non-hex characters in the text field) returns an error
- Input exceeds 100,000 character limit causing rejection
- Missing or empty 'text' or 'key' fields return validation errors
- Payment of exactly $0.001 USDC not provided results in 402 Payment Required
- Network timeout or service unavailability returns 5xx error

## How this service works

Call when an agent needs a sha3-384 digest of hex bytes, encoded as hex. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-384-hex-rawhex first.

## Output

Returns a SHA3-384 cryptographic digest of the raw bytes represented by the hex-encoded input, as a lowercase hexadecimal string. No additional metadata — just the hex-encoded hash output.

## 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-hex-bytes-to-hex-digest-f9c52d56/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)