# SHA3-224 Digest of Latin1 Bytes, Base64url-Encoded

> SHA3-224 Digest of Latin1 Bytes, Base64url-Encoded is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-24).

Computes a SHA3-224 cryptographic hash of Latin1-encoded input text and returns the digest encoded as base64url.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha3-224-base64url-latin1?utm_source=zero.xyz
- Price: $0.002/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-digest-of-latin1-bytes-base64url-encoded-4e0ad835
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fPfBhuduUTOVT-EanpdNt

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-latin1-bytes-base64url-encoded-4e0ad835 -d '<json body>'
```

Example prompt: Can you hash the text 'Hello, world!' using SHA3-224, treating it as Latin1 bytes, and give me the result as a base64url-encoded digest?

## When to prefer this

Use this endpoint when you specifically need a SHA3-224 hash (not SHA2, MD5, or RIPEMD160), the input must be treated as Latin1 (ISO-8859-1) bytes rather than UTF-8 or UTF-16, and the output must be in base64url encoding (URL-safe, no padding). Prefer the free sandbox endpoint (/v1/sandbox/digest-sha3-224-base64url-latin1) for testing; use this paid endpoint in production workflows that require SHA3-224 specifically.

## Known failure modes

- Input text exceeds 100,000 character limit — request rejected
- Input text or key is empty (minLength:1 not satisfied) — validation error
- Text contains characters that cannot be meaningfully represented as Latin1 — encoding ambiguity
- Payment of $0.002 USDC not provided or rejected — 402 Payment Required
- Network timeout or service unavailability — 5xx error

## How this service works

Call when an agent needs a sha3-224 digest of latin1 bytes, encoded as base64url. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-224-base64url-latin1 first.

## Output

Returns a SHA3-224 cryptographic digest of the input text interpreted as Latin1 bytes, encoded in base64url format (no padding characters, URL-safe alphabet). The output is a fixed-length base64url string representing the 28-byte SHA3-224 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": [
    "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/sha3-224-digest-of-latin1-bytes-base64url-encoded-4e0ad835/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)