# SHA-512/224 Digest (Base64URL, Latin1) — agentshelf.syntexa.ch

> SHA-512/224 Digest (Base64URL, Latin1) — agentshelf.syntexa.ch is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-29).

Computes a SHA-512/224 hash of Latin1-encoded bytes and returns the digest encoded as base64url.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha512-224-base64url-latin1?utm_source=zero.xyz
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sha-512-224-digest-base64url-latin1-agentshelf-syntexa-ch-fc702539
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vxjoNjZCugnFNmH6nJ4E2

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 sha-512-224-digest-base64url-latin1-agentshelf-syntexa-ch-fc702539 -d '<json body>'
```

Example prompt: Hash the following Latin1-encoded text using SHA-512/224 and give me the result as a base64url string: 'Héllo, wörld! This is my Latin1 content.'

## When to prefer this

Choose this endpoint when you specifically need a SHA-512/224 hash (not SHA-256 or SHA-3) of Latin1-encoded bytes, with the output formatted as base64url. It is ideal for systems that require compact URL-safe base64 digests, legacy Latin1 content pipelines, or compliance with protocols specifying SHA-512/224. Use the free sandbox variant (/v1/sandbox/digest-sha512-224-base64url-latin1) for testing; pay the $0.008 USDC rate for production use.

## Known failure modes

- Input text contains characters not representable in Latin1, causing encoding errors
- Text or key fields missing or empty (violates minLength:1 constraint)
- Text exceeds 100,000 character limit, resulting in a 400 or payload-too-large error
- Payment not completed (x402 payment required error if USDC not sent)
- Network timeout or service unavailability returning 5xx

## How this service works

Call when an agent needs a sha512-224 digest of latin1 bytes, encoded as base64url. Exact $0.008 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-224-base64url-latin1 first.

## Output

Returns a SHA-512/224 cryptographic digest of the Latin1-interpreted input bytes, encoded as a base64url string (no padding). The result is deterministic: identical inputs always yield identical outputs.

## 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/sha-512-224-digest-base64url-latin1-agentshelf-syntexa-ch-fc702539/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)