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Blake2b-512 Digest → Base64 (UTF-16LE Encoding)
x402
Blake2b-512 Digest → Base64 (UTF-16LE Encoding) 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 BLAKE2b-512 cryptographic hash of the UTF-16LE byte representation of a text string and returns the digest encoded as Base64.
Price / call$0.006
Success—
StatusUnknown
How this service works
Call when an agent needs a blake2b512 digest of utf16le bytes, encoded as base64. Exact $0.006 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2b512-base64-utf16 first.
Output
Returns a Base64-encoded BLAKE2b-512 digest computed over the UTF-16LE byte encoding of the input text, optionally keyed with the provided key string.
Example use cases
Integrity fingerprint for exported data
“I'm exporting a report from our system and need a tamper-evident fingerprint — can you compute a BLAKE2b-512 Base64 hash of this text using UTF-16LE encoding with the key 'audit2024': 'Q3 Revenue: $4,200,000'?”
Keyed hash for API message signing
“Before I send this webhook payload to a partner, I need to sign it — compute a BLAKE2b-512 Base64 digest of 'user_id=42&action=purchase&amount=99.99' encoded as UTF-16LE using the key 'webhook-secret-v1'.”
Deduplication checksum for Unicode content
“I have a document in memory and I want a unique BLAKE2b-512 Base64 checksum of it for deduplication — the text is 'Résumé: expérience professionnelle en données' and the key is 'dedup-key'.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-blake2b512-base64-utf16?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need a BLAKE2b-512 hash computed over UTF-16LE byte representation of a string (e.g., for compatibility with Windows/.NET systems that default to UTF-16LE) and want the result as Base64. Use the free sandbox variant (/v1/sandbox/digest-blake2b512-base64-utf16) first; fall back to this paid endpoint when the sandbox is unavailable or rate-limited.
Side effects
- Text or key exceeds maximum allowed length (text: 100,000 chars, key: 512 chars) — returns 4xx validation error
- Missing required 'text' field — returns 4xx bad request
- Payment not provided or insufficient — returns 402 Payment Required
- Service unavailable or transient error — returns 5xx
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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