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BLAKE2b-512 Hex Digest of UTF-16LE Text
x402
BLAKE2b-512 Hex Digest of UTF-16LE Text is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-29).
Computes a keyed or unkeyed BLAKE2b-512 cryptographic hash of text encoded as UTF-16LE bytes, returning the digest as a lowercase hex string.
Price / call$0.003
Success—
StatusUnknown
How this service works
Call when an agent needs a blake2b512 digest of utf16le bytes, encoded as hex. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2b512-hex-utf16 first.
Output
A hex-encoded BLAKE2b-512 digest string (128 hex characters) computed over the UTF-16LE byte representation of the input text, optionally keyed. The response is a deterministic, fixed-length hash suitable for integrity checks, deduplication, or keyed message authentication.
Example use cases
Keyed integrity tag for Windows file content
“Hash the text 'Invoice #4821 total: $9,500.00' as a UTF-16LE BLAKE2b-512 digest in hex using the key 'finance-audit-2024' so I can store it as a tamper-evident checksum.”
Deduplication fingerprint for Unicode documents
“I need a blake2b-512 hex fingerprint of the following Unicode document text using UTF-16LE encoding so I can detect duplicates in my archive: 'Rapport annuel 2023 — Résultats financiers'.”
Message authentication code for API payload
“Generate a keyed blake2b-512 hex digest of the payload string 'user_id=88234&action=transfer&amount=500' encoded as UTF-16LE using the key 'webhook-secret-xyz' so I can attach it as a MAC to my outgoing request.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-blake2b512-hex-utf16?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need a BLAKE2b-512 digest computed over UTF-16LE bytes (the native encoding used by Windows, .NET, and many Microsoft file formats) and want the output as a hex string. Use it over SHA-3 siblings when BLAKE2b's speed or keying capability is required, and over the sandbox variant (/v1/sandbox/digest-blake2b512-hex-utf16) when you need a production, paid call. Prefer this over generic hashing libraries when operating in an agent environment that cannot run native code.
Side effects
- Text or key exceeds maximum length (100,000 chars for text, 512 chars for key) — validation error returned
- Missing required 'text' field — request rejected
- Invalid UTF-16LE encoding edge cases for certain emoji or surrogate pairs may produce unexpected results
- Payment failure or insufficient USDC balance — 402 Payment Required response
- Network timeout if service is temporarily unavailable
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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Zero review prompt (fires after every successful call)
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