# SHA3-512 Digest (Base64, Latin-1) — agentshelf.syntexa.ch

> SHA3-512 Digest (Base64, Latin-1) — agentshelf.syntexa.ch is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-02).

Computes a SHA3-512 cryptographic hash of a Latin-1 encoded string and returns the digest encoded as Base64.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha3-512-base64-latin1?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sha3-512-digest-base64-latin-1-agentshelf-syntexa-ch-14f78ef4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fWbikUp1fnyBhnNW4x1pT

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 sha3-512-digest-base64-latin-1-agentshelf-syntexa-ch-14f78ef4 -d '<json body>'
```

Example prompt: Can you compute the SHA3-512 hash of the Latin-1 text 'Hello, World!' and give me the result encoded as Base64?

## When to prefer this

Use this endpoint when you specifically need a SHA3-512 hash (not SHA-256 or SHA-512) of Latin-1 text returned as Base64. Prefer this over SHA-256 when stronger collision resistance with the SHA-3 family is required. Choose this over building your own if you need a simple, paid API call without setting up local cryptographic libraries. Try the free sandbox endpoint (POST /v1/sandbox/digest-sha3-512-base64-latin1) first to avoid cost.

## Known failure modes

- Input text exceeds 100,000 characters — request rejected
- Text contains characters outside Latin-1 range — encoding may produce unexpected results
- Missing or empty 'text' field — validation error returned
- Payment of $0.005 USDC not fulfilled — 402 Payment Required response
- Network timeout if service is temporarily unavailable

## How this service works

Call when an agent needs a sha3-512 digest of latin1 bytes, encoded as base64. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-512-base64-latin1 first.

## Output

Returns a Base64-encoded SHA3-512 digest string computed from the provided Latin-1 text input. The digest is deterministic and 88 Base64 characters long (512 bits).

## 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/sha3-512-digest-base64-latin-1-agentshelf-syntexa-ch-14f78ef4/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)