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Blake2s-256 / Base64url / UTF-16LE Digest
x402
Blake2s-256 / Base64url / UTF-16LE Digest is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).
Computes a BLAKE2s-256 hash of text encoded as UTF-16LE bytes, returning the digest as a base64url string, with an optional HMAC key.
Price / call$0.001
Success—
StatusUnknown
How this service works
Call when an agent needs a blake2s256 digest of utf16le bytes, encoded as base64url. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2s256-base64url-utf16 first.
Output
Returns a base64url-encoded BLAKE2s-256 digest computed over the UTF-16LE byte representation of the input text, optionally using the provided key for a keyed (MAC) mode. The result is a compact, URL-safe hash string.
Example use cases
Fingerprinting document content
“Hash the text 'Annual report Q4 2024: revenue up 12%.' with BLAKE2s-256 over UTF-16LE bytes and return the digest as base64url so I can use it as a stable content fingerprint.”
Keyed MAC for API payload signing
“Generate a keyed BLAKE2s-256 digest of the payload 'user_id=42&action=transfer' using the key 'shared_secret_2024', encoded as base64url — I need it for integrity verification.”
Deduplication hash for multilingual text
“Give me a base64url BLAKE2s-256 hash of the UTF-16LE bytes of '日本語のテキストサンプル' so I can deduplicate multilingual strings in my database.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-blake2s256-base64url-utf16?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need a BLAKE2s-256 hash with UTF-16LE byte encoding and base64url output — common for Windows-native text fingerprinting, URL-safe checksums, or when interoperating with systems that default to UTF-16LE (e.g. .NET, Windows APIs). Prefer the free sandbox endpoint /v1/sandbox/digest-blake2s256-base64url-utf16 first; use this paid endpoint when the sandbox is unavailable or rate-limited.
Side effects
- Text or key exceeds allowed length limits (maxLength 100000 for text, 512 for key) — validation error returned
- Empty text or key provided (minLength 1) — request rejected
- Malformed JSON input — parse error
- Payment of $0.001 USDC not received or declined — 402 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| key | string | HMAC secret. Required on HMAC SKUs. Omit it for plain digests and checksums. The key is not stored. |
| text | string | 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. |
Tags
x402
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