# SHA-512 / Base64 / Latin-1 Digest

> SHA-512 / Base64 / Latin-1 Digest is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-02).

Computes a SHA-512 hash of latin1-encoded text bytes and returns the digest encoded as base64.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha512-base64-latin1?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sha-512-base64-latin-1-digest-8d23cf81
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Bx_VtfjsWRbji-tw1h9zl

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-base64-latin-1-digest-8d23cf81 -d '<json body>'
```

Example prompt: Can you compute the SHA-512 hash of this latin1 text and give me the result as base64: 'Héllo Wörld, this is my data'?

## When to prefer this

Choose this endpoint when you specifically need a SHA-512 digest of latin1-encoded bytes returned as base64 — particularly for legacy system compatibility, ISO-8859-1 encoded content, or pipelines that require base64 SHA-512 output. Use the free sandbox variant (/v1/sandbox/digest-sha512-base64-latin1) first to validate your inputs before paying. Prefer alternatives if you need UTF-8 encoding, a different hash algorithm (blake2b, blake2s), or a different output encoding (hex, base32).

## Known failure modes

- Input text contains characters outside the latin1 range (codepoints > 255), causing encoding errors
- Missing required 'text' field returns a validation error
- Text exceeding 100,000 characters is rejected
- Payment of $0.003 USDC not provided or x402 handshake fails, resulting in a 402 response

## How this service works

Call when an agent needs a sha512 digest of latin1 bytes, encoded as base64. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-base64-latin1 first.

## Output

Returns a base64-encoded SHA-512 digest of the input text treated as latin1 bytes. No network calls or LLM processing are involved; the computation is purely deterministic and cryptographic.

## 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-base64-latin-1-digest-8d23cf81/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)