# SHA3-512 Hex Digest (Latin1) — agentshelf.syntexa.ch

> SHA3-512 Hex Digest (Latin1) — agentshelf.syntexa.ch is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-02).

Computes a SHA3-512 cryptographic digest of Latin1-encoded bytes and returns the result as a lowercase hex string.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha3-512-hex-latin1?utm_source=zero.xyz
- Price: $0.002/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-hex-digest-latin1-agentshelf-syntexa-ch-f4374ad5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZKDX17j17-01QaFTBd8Ms

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-hex-digest-latin1-agentshelf-syntexa-ch-f4374ad5 -d '<json body>'
```

Example prompt: Can you give me the SHA3-512 hex digest of the Latin1-encoded text 'Hello, World! This is my document content.' so I can verify its integrity?

## When to prefer this

Choose this endpoint when you specifically need a SHA3-512 digest (not SHA-256, MD5, or SHA-1) of text treated as Latin1 bytes, returned as hex — for example when downstream systems expect the Keccak-derived SHA3 family. If cost is a concern, try the free sandbox endpoint POST /v1/sandbox/digest-sha3-512-hex-latin1 first. Prefer this over the HMAC-SHA3-512 sibling when no secret key is required.

## Known failure modes

- Input text exceeds 100,000 character limit — request rejected
- Text contains characters not representable in Latin1 encoding — may produce unexpected results
- Empty string input rejected due to minLength:1 constraint
- Payment of $0.002 USDC not fulfilled — 402 Payment Required response
- Network timeout or service unavailability — 5xx error

## How this service works

Call when an agent needs a sha3-512 digest of latin1 bytes, encoded as hex. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-512-hex-latin1 first.

## Output

Returns a 128-character lowercase hexadecimal string representing the SHA3-512 digest of the input text treated as Latin1-encoded bytes. No state is stored; the result is deterministic for identical inputs.

## 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-hex-digest-latin1-agentshelf-syntexa-ch-f4374ad5/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)