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SHA-512/224 Digest as Base64url from Hex Bytes
x402
SHA-512/224 Digest as Base64url from Hex Bytes 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-512/224 cryptographic hash of hex-encoded byte input and returns the digest encoded as base64url.
Price / call$0.009
Success—
StatusUnknown
How this service works
Call when an agent needs a sha512-224 digest of hex bytes, encoded as base64url. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-224-base64url-rawhex first.
Output
Returns a SHA-512/224 cryptographic digest of the provided hex-encoded byte input, encoded as a base64url string. The output is a compact, URL-safe hash suitable for use as a fingerprint, checksum, or integrity token.
Example use cases
Integrity check for binary payload
“I have a binary payload represented as hex bytes '0a1b2c3d4e5f' and I need to verify its integrity using a SHA-512/224 digest encoded as base64url — can you compute that for me?”
Fingerprinting hex-encoded cryptographic key material
“I've got key material in hex format 'f0e1d2c3b4a59687' and I want to fingerprint it with a SHA-512/224 hash returned as base64url, so I can use it as a compact identifier.”
Audit log entry checksum
“For my audit log, I need a SHA-512/224 base64url digest of this hex-encoded record data: '48656c6c6f576f726c64' — please compute it so I can attach it as a checksum.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-sha512-224-base64url-rawhex?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need a SHA-512/224 (truncated SHA-512) digest over raw hex bytes, with the result encoded as base64url. It is preferred when you need a compact, URL-safe hash that is stronger than MD5/SHA-1 but more bandwidth-efficient than full SHA-512. Use the free sandbox variant (/v1/sandbox/digest-sha512-224-base64url-rawhex) first during development; use this paid endpoint in production when sandbox limits are exceeded or reliability is required.
Side effects
- Invalid hex string input (non-hex characters) causing a 400 error
- Input text exceeds 100,000 character limit causing rejection
- Empty key or text fields causing validation failure
- Payment not provided or insufficient USDC causing 402 response
- Service unavailability causing 5xx errors
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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