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Blake2b-512 Base64url Digest (UTF-16LE)
x402
Blake2b-512 Base64url Digest (UTF-16LE) is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.009/call, status unknown (last checked 2026-09-29).
Computes a BLAKE2b-512 keyed or unkeyed digest of a UTF-16LE-encoded text string and returns it as a base64url-encoded string.
Price / call$0.009
Success—
StatusUnknown
How this service works
Call when an agent needs a blake2b512 digest of utf16le bytes, encoded as base64url. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2b512-base64url-utf16 first.
Output
Returns a base64url-encoded string representing the BLAKE2b-512 digest of the UTF-16LE-encoded input text, optionally keyed with the provided key string.
Example use cases
Integrity fingerprint for document archive
“Hash the string 'Contract v2.1 approved by legal team on 2024-06-01' using BLAKE2b-512 over UTF-16LE bytes and give me the result as a base64url string — use 'archivekey' as the BLAKE2b key.”
Keyed MAC for API message signing
“I need to sign an API message payload — compute the BLAKE2b-512 MAC of the text 'user_id=42&action=transfer&amount=500' in UTF-16LE encoding with the key 'supersecrethmackey' and return it base64url-encoded.”
Deduplication hash for multilingual content
“Generate a BLAKE2b-512 digest of the Japanese text '本日はお日柄もよく' encoded as UTF-16LE and return it as a base64url string so I can use it as a deduplication key — no key needed for this one.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-blake2b512-base64url-utf16?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need a BLAKE2b-512 digest of text treated as UTF-16LE bytes with base64url output encoding — for example when matching a specific hash format used by a .NET or Windows application, or when integrating with systems that require BLAKE2b over UTF-16LE rather than SHA-256 or UTF-8. Prefer the free sandbox endpoint at /v1/sandbox/digest-blake2b512-base64url-utf16 for testing before paying.
Side effects
- Text or key exceeds maximum length (100,000 or 512 chars) — returns validation error
- Empty text or key supplied — rejected by schema minLength constraint
- Malformed request body (missing required fields) — 400 bad request
- Payment not provided or insufficient USDC — 402 payment required
- Service temporarily unavailable — 5xx error
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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