# BLAKE2b-512 Base32 UTF-16LE Digest

> BLAKE2b-512 Base32 UTF-16LE Digest 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 BLAKE2b-512 cryptographic hash of UTF-16LE-encoded text and returns the digest encoded as Base32

## Facts

- Endpoint: POST https://agentshelf.syntexa.ch/v1/digest-blake2b512-base32-utf16?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/blake2b-512-base32-utf-16le-digest-fdf1389b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wmI1SaIPBXv1-Q7f6yr4G

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 blake2b-512-base32-utf-16le-digest-fdf1389b -d '<json body>'
```

Example prompt: Compute a BLAKE2b-512 hash of the text 'Hello, World!' treating it as UTF-16LE bytes, using the key 'mysecretkey', and give me the result as a Base32 string.

## When to prefer this

Choose this endpoint when you specifically need a BLAKE2b-512 hash computed over UTF-16LE byte representation of the input text (common for Windows/COM interop, .NET strings, or cross-platform unicode consistency) with Base32 output encoding. Prefer the unpaid sandbox variant (POST /v1/sandbox/digest-blake2b512-base32-utf16) for testing. Use this paid endpoint when you need production reliability and the UTF-16LE byte interpretation is a hard requirement. If you need Base64 or Hex output instead, or standard UTF-8 encoding, use the corresponding sibling endpoints on the same host.

## Known failure modes

- Empty or missing 'text' field returns a validation error
- Empty or missing 'key' field returns a validation error
- Text exceeding 100,000 characters is rejected
- Key exceeding 512 characters is rejected
- Invalid JSON body returns a 400 error
- Payment failure or insufficient USDC balance results in a 402 response

## How this service works

Call when an agent needs a blake2b512 digest of utf16le bytes, encoded as base32. Exact $0.002 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2b512-base32-utf16 first.

## Output

Returns a Base32-encoded string representing the BLAKE2b-512 digest of the input text interpreted as UTF-16LE bytes. The digest is deterministic: identical key and text always produce the same output. No external network calls or LLM inference are involved.

## 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/blake2b-512-base32-utf-16le-digest-fdf1389b/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)