# SHA3-224 Digest of Hex Bytes, Base64-Encoded

> SHA3-224 Digest of Hex Bytes, Base64-Encoded is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-29).

Computes the SHA3-224 hash of raw bytes supplied as hex, returning the digest encoded as base64

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha3-224-base64-rawhex?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sha3-224-digest-of-hex-bytes-base64-encoded-2c023600
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yNYhf2aZjUxJG6iD7lLj0

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 sha3-224-digest-of-hex-bytes-base64-encoded-2c023600 -d '<json body>'
```

Example prompt: Can you compute the SHA3-224 hash of the raw hex bytes '48656c6c6f' and give me the result as a base64-encoded digest?

## When to prefer this

Choose this endpoint when you specifically need a SHA3-224 digest (not SHA-256, SHA3-256, or other variants) of binary data supplied as raw hex bytes and want the output as base64 encoding. Prefer the unpaid sandbox variant at POST /v1/sandbox/digest-sha3-224-base64-rawhex when available. Use this paid endpoint when the sandbox is unavailable or rate-limited, and you need guaranteed production reliability for cryptographic hashing of hex-encoded binary payloads.

## Known failure modes

- Invalid or non-hex input string causing a parsing error
- Input hex string with odd length (malformed hex) returning a 400 error
- Exceeding the maxLength of 100000 characters resulting in rejection
- Missing required fields (key or text) returning a validation error
- Network or payment failure (x402 payment not processed) blocking the request

## How this service works

Call when an agent needs a sha3-224 digest of hex bytes, encoded as base64. Exact $0.01 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-224-base64-rawhex first.

## Output

Returns the SHA3-224 cryptographic hash of the raw bytes represented by the input hex string, encoded as a base64 string. The response includes the digest value ready for use in integrity checks, fingerprinting, or downstream verification workflows.

## 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/sha3-224-digest-of-hex-bytes-base64-encoded-2c023600/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)