# SHA3-224 Hex Digest of Raw Hex Bytes

> SHA3-224 Hex Digest of Raw Hex Bytes is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.007/call, status unknown (last checked 2026-10-24).

Computes a SHA3-224 cryptographic hash of raw bytes provided as hex-encoded input, returning the digest as a hex string.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha3-224-hex-rawhex?utm_source=zero.xyz
- Price: $0.007/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sha3-224-hex-digest-of-raw-hex-bytes-f5a7f9a7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ubWeo2Q_5r15KGxKNqZW-

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-hex-digest-of-raw-hex-bytes-f5a7f9a7 -d '<json body>'
```

Example prompt: Can you compute the SHA3-224 hash of these hex bytes: 'deadbeef0102030405060708' and give me the result as a hex string?

## When to prefer this

Use this endpoint when you specifically need a SHA3-224 (not SHA3-256, SHA-256, or MD5) digest of data already encoded as hexadecimal bytes, and you require the result as a hex string. Prefer the unpaid sandbox variant (POST /v1/sandbox/digest-sha3-224-hex-rawhex) when available to avoid the $0.007 USDC cost. Choose this paid endpoint when the sandbox is unavailable or rate-limited and you need a guaranteed response.

## Known failure modes

- Invalid hex string input (non-hex characters) causing a parse error
- Input exceeds 100,000 character limit returning a validation error
- Missing required text or key field resulting in a 400 Bad Request
- Payment failure or insufficient USDC balance returning a 402 Payment Required
- Malformed request body returning a schema validation error

## How this service works

Call when an agent needs a sha3-224 digest of hex bytes, encoded as hex. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-224-hex-rawhex first.

## Output

A SHA3-224 cryptographic digest of the input hex bytes, returned as a lowercase hex string. The output is a fixed-length 56-character hexadecimal representation of the 224-bit hash.

## 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-hex-digest-of-raw-hex-bytes-f5a7f9a7/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)