# BLAKE2s-256 Base64 Digest (Latin-1) — agentshelf.syntexa.ch

> BLAKE2s-256 Base64 Digest (Latin-1) — agentshelf.syntexa.ch is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-02).

Computes a BLAKE2s-256 hash of Latin-1-encoded text input and returns the digest encoded as Base64.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-blake2s256-base64-latin1?utm_source=zero.xyz
- Price: $0.009/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blake2s-256-base64-digest-latin-1-agentshelf-syntexa-ch-4f0786fe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2pZdEAmZPLeff8MLyWMSa

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 blake2s-256-base64-digest-latin-1-agentshelf-syntexa-ch-4f0786fe -d '<json body>'
```

Example prompt: Can you compute a BLAKE2s-256 hash of the Latin-1 text 'Hello, world!' using the key 'mysecretkey' and give me the result as Base64?

## When to prefer this

Choose this endpoint when you need a fast, lightweight BLAKE2s-256 cryptographic digest specifically of Latin-1-encoded text with the output in Base64 format, and do not have access to local cryptographic libraries. It is also suitable for keyed BLAKE2s hashing (MAC) when a secret key is required. Prefer the unpaid sandbox endpoint /v1/sandbox/digest-blake2s256-base64-latin1 for development/testing to avoid the $0.009 USDC per-call cost.

## Known failure modes

- Text contains characters outside Latin-1 range (only bytes 0x00–0xFF supported)
- Key exceeds 512-character limit or is empty when provided
- Text is empty or missing (minLength:1 required)
- Network timeout or upstream service error (HTTP 5xx)
- Payment failure — x402 payment protocol error or insufficient USDC balance

## How this service works

Call when an agent needs a blake2s256 digest of latin1 bytes, encoded as base64. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2s256-base64-latin1 first.

## Output

A Base64-encoded string representing the BLAKE2s-256 digest of the provided Latin-1 text, optionally computed with a secret key for keyed hashing (MAC).

## 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/blake2s-256-base64-digest-latin-1-agentshelf-syntexa-ch-4f0786fe/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)