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SHA-512/256 Digest (Base64URL, UTF-16LE) via agentshelf.syntexa.ch
x402
SHA-512/256 Digest (Base64URL, UTF-16LE) via agentshelf.syntexa.ch 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 SHA-512/256 hash of a text string encoded as UTF-16LE bytes, returning the digest as a base64url string.
Price / call$0.009
Success—
StatusUnknown
How this service works
Call when an agent needs a sha512-256 digest of utf16le bytes, encoded as base64url. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-256-base64url-utf16 first.
Output
Returns a base64url-encoded SHA-512/256 digest computed over the UTF-16LE byte representation of the input text string. The output is a compact, URL-safe cryptographic hash suitable for integrity checking, deduplication, or key derivation.
Example use cases
Document integrity fingerprinting
“I need a SHA-512/256 digest of this contract text 'AGREEMENT dated 2024-01-01 between Party A and Party B...' encoded as UTF-16LE and returned as base64url so I can use it as a tamper-evident fingerprint.”
Hashing user-submitted content for deduplication
“Can you hash this user comment 'Great product, loved the experience!' using SHA-512/256 over its UTF-16LE bytes and give me the base64url result so I can check for duplicate submissions?”
Generating a compact key from a passphrase
“Take the passphrase 'SunsetRiver42!' and produce its SHA-512/256 digest as base64url using UTF-16LE encoding — I want a compact, URL-safe hash to use as a derived key identifier.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-sha512-256-base64url-utf16?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need a SHA-512/256 digest of text bytes interpreted in UTF-16LE encoding (common for Windows-originated strings or COM/NTFS contexts) with base64url output. Prefer the free sandbox endpoint (/v1/sandbox/digest-sha512-256-base64url-utf16) for testing. Use this paid endpoint when the sandbox is unavailable or when operating in production with x402 payment flow.
Side effects
- Empty or missing 'text' field returns a validation error
- Text exceeding 100,000 characters is rejected
- Missing or empty 'key' field may cause authentication failure
- Payment not provided or insufficient USDC balance returns a 402 error
- Network timeout for very large text inputs near the character limit
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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