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SHA-512 Base64URL Digest of Hex Bytes
x402
SHA-512 Base64URL Digest of Hex Bytes is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.007/call, status unknown (last checked 2026-09-29).
Computes a SHA-512 hash of raw bytes supplied as a hex string and returns the digest encoded as base64url
Price / call$0.007
Success—
StatusUnknown
How this service works
Call when an agent needs a sha512 digest of hex bytes, encoded as base64url. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-base64url-rawhex first.
Output
A SHA-512 digest of the input hex bytes, returned as a base64url-encoded string (no padding, URL-safe characters). The response is deterministic for identical inputs.
Example use cases
Integrity check of binary blob
“I have this binary data represented as hex — '4f3a9c00ff12ab88' — can you run a SHA-512 hash on it and give me the base64url digest so I can compare it against a known checksum?”
Sign token payload before transmission
“Take this hex-encoded payload 'a1b2c3d4e5f60718' and produce a SHA-512 base64url digest of it so I can include it as an integrity token in my API request.”
Fingerprint raw cryptographic key material
“I've got some raw key material in hex form — '0011223344556677aabbccddeeff0000' — please SHA-512 hash it and return the base64url-encoded digest so I can store a safe fingerprint.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-sha512-base64url-rawhex?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need a SHA-512 hash of binary data supplied as a hex string and want the result in base64url encoding — a combination not commonly offered by generic hash utilities. Prefer the unpaid sandbox endpoint (POST /v1/sandbox/digest-sha512-base64url-rawhex) when available to avoid the $0.007 USDC charge. Use this paid version when the sandbox is unavailable or rate-limited.
Side effects
- Invalid hex string (odd length or non-hex characters) causes a 400 error
- Empty or missing text field returns a validation error
- text field exceeding 100,000 character limit is rejected
- Payment not fulfilled results in 402 response before computation occurs
- Malformed JSON body returns 400
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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