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BLAKE2b-512 Hex Digest of Raw Hex Bytes
x402
BLAKE2b-512 Hex Digest of Raw Hex Bytes is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-29).
Computes a BLAKE2b-512 cryptographic digest of hex-encoded raw bytes input, returning the result as a hex string
Price / call$0.005
Success—
StatusUnknown
How this service works
Call when an agent needs a blake2b512 digest of hex bytes, encoded as hex. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/digest-blake2b512-hex-rawhex first.
Output
A hex-encoded BLAKE2b-512 digest string (128 hex characters) representing the cryptographic hash of the provided hex-encoded raw bytes input, optionally keyed.
Example use cases
Binary data integrity fingerprinting
“I have some raw binary data represented as hex: '4d5a9000030000000400000000000000'. Can you compute its BLAKE2b-512 hash and return it in hex so I can store it as an integrity fingerprint?”
Keyed BLAKE2b checksum for authentication
“Generate a keyed BLAKE2b-512 hex digest of the hex bytes 'cafebabe0011223344556677' using the key 'mysecretkey' — I need this for a message authentication check.”
Cross-platform hash verification
“I need to verify a file chunk: compute the BLAKE2b-512 hash of the raw hex bytes 'ff00aabb1234567890abcdef' and return it as hex so I can compare it against our stored checksum.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-blake2b512-hex-rawhex?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to hash raw binary data represented as hex bytes (not UTF-8 text) using BLAKE2b-512 with hex output. Use the free sandbox variant (/v1/sandbox/digest-blake2b512-hex-rawhex) first to avoid the $0.005 USDC cost. Prefer sibling endpoints if your input is plain text or if you need base64/base32 output encoding instead.
Side effects
- Invalid hex input (odd-length or non-hex characters) causes a 400 error
- Key exceeds 512 characters causing validation failure
- Empty key or text fields (minLength:1 required) cause rejection
- Malformed JSON body results in parse 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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