# Blake2s-256 Hex Digest (Latin1) — agentshelf.syntexa.ch

> Blake2s-256 Hex Digest (Latin1) — agentshelf.syntexa.ch is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.006/call, status unknown (last checked 2026-09-29).

Computes a BLAKE2s-256 cryptographic digest of latin1-encoded bytes and returns the result as a lowercase hex string.

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-blake2s256-hex-latin1?utm_source=zero.xyz
- Price: $0.006/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blake2s-256-hex-digest-latin1-agentshelf-syntexa-ch-b728dc4d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pa-EkgxKElHGDmUUNGSQh

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-hex-digest-latin1-agentshelf-syntexa-ch-b728dc4d -d '<json body>'
```

Example prompt: Compute the BLAKE2s-256 hex digest of the latin1 text 'Hello, world!' using the secret key 'mysecretkey'.

## When to prefer this

Choose this endpoint when you specifically need a BLAKE2s-256 digest (not SHA-256 or BLAKE2b) of latin1-encoded text and want the result as hex. It supports optional keyed hashing (MAC mode) which SHA-family endpoints typically do not. Prefer the unpaid sandbox variant (/v1/sandbox/digest-blake2s256-hex-latin1) for testing; use this paid endpoint for production workloads where guaranteed SLA matters.

## Known failure modes

- Text contains characters outside the latin1 range (codepoints > 255) — the API may reject or mangle the input
- Key exceeds 512-character maximum length — request rejected with validation error
- Empty text or key supplied — rejected by minLength:1 constraint
- Network timeout or service unavailability — no digest returned
- Insufficient USDC balance — payment fails and request is not processed

## How this service works

Call when an agent needs a blake2s256 digest of latin1 bytes, encoded as hex. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2s256-hex-latin1 first.

## Output

A JSON response containing the BLAKE2s-256 digest of the provided latin1 text, encoded as a lowercase hexadecimal string. The digest is 32 bytes (64 hex characters) long.

## 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-hex-digest-latin1-agentshelf-syntexa-ch-b728dc4d/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)