# SHA-512 Digest — Base64URL Encoded, Latin1 Input

> SHA-512 Digest — Base64URL Encoded, Latin1 Input is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.006/call, status unknown (last checked 2026-10-19).

Computes a SHA-512 cryptographic hash of Latin1-encoded bytes from input text and returns the digest encoded as a Base64URL string.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-sha512-base64url-latin1?utm_source=zero.xyz
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sha-512-digest-base64url-encoded-latin1-input-4c119bd6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_noHPW95PJt0pi44kUz8a0

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-digest-base64url-encoded-latin1-input-4c119bd6 -d '<json body>'
```

Example prompt: Can you compute a SHA-512 hash of this Latin1 text — 'Héllo wörld' — and give me the result encoded as Base64URL?

## When to prefer this

Choose this endpoint when you specifically need a SHA-512 hash of text that must be treated as Latin1 (ISO-8859-1) byte sequences — not UTF-8 — and the output must be Base64URL encoded for use in URLs, JWTs, or other contexts requiring URL-safe characters. Use this instead of UTF-8 variants when your input is binary data or legacy Latin1-encoded content, and instead of hex or Base64 variants when URL safety matters.

## Known failure modes

- Input text contains characters outside Latin1 range (code points > 255), causing encoding failure
- Missing required 'text' field returns a validation error
- Text exceeds 100,000 character limit returns a payload-too-large error
- Payment of exactly $0.006 USDC not received results in a 402 Payment Required response
- Network timeout or service unavailability returns a 5xx error

## How this service works

Call when an agent needs a sha512 digest of latin1 bytes, encoded as base64url. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-base64url-latin1 first.

## Output

Returns a SHA-512 cryptographic digest of the input text interpreted as Latin1 bytes, encoded as a Base64URL string (no padding, URL-safe characters). The response is deterministic: the same input always produces the same 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/sha-512-digest-base64url-encoded-latin1-input-4c119bd6/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)