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BLAKE2b-512 Hex Digest (Latin-1) — agentshelf.syntexa.ch
x402
BLAKE2b-512 Hex Digest (Latin-1) — agentshelf.syntexa.ch is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-29).
Computes a BLAKE2b-512 cryptographic digest of Latin-1-encoded text bytes and returns the result as a lowercase hex string.
Price / call$0.004
Success—
StatusUnknown
How this service works
Call when an agent needs a blake2b512 digest of latin1 bytes, encoded as hex. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2b512-hex-latin1 first.
Output
A JSON response containing the BLAKE2b-512 cryptographic digest of the provided Latin-1 text, returned as a lowercase hexadecimal string (128 hex characters representing 64 bytes).
Example use cases
Integrity fingerprint for stored content
“Hash this document text 'Invoice #4821 for $500 due 2024-06-01' with BLAKE2b-512 and give me the hex digest so I can store it as an integrity fingerprint.”
Keyed MAC for API message signing
“I need a keyed BLAKE2b-512 hex digest of the message 'user_id=42&action=transfer' using the secret key 'api-signing-key-xyz' to sign my API request payload.”
Deduplication hash for Latin-1 data
“Generate a BLAKE2b-512 hex hash for the Latin-1 text 'Ñoño café résumé' so I can use it as a deduplication key in my database.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-blake2b512-hex-latin1?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a BLAKE2b-512 digest specifically over Latin-1 byte-encoded text returned as hex, especially when operating within an x402-payment-enabled agent pipeline. Prefer the free sandbox variant (/v1/sandbox/digest-blake2b512-hex-latin1) for testing. Choose this over SHA-256 or MD5 endpoints when BLAKE2b's speed and security properties are required, or when downstream systems expect a BLAKE2b-512 hex output.
Side effects
- Text or key contains non-Latin-1 characters (e.g. multi-byte Unicode above U+00FF) — may produce an error or unexpected digest
- Key exceeds 512-character maximum — returns a validation error
- Text exceeds 100,000-character limit — returns a validation error
- Empty text or key (below minLength of 1) — returns a validation error
- Payment failure or insufficient USDC balance — HTTP 402 or payment-related 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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