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SHA-512/256 Base64url Digest of Hex Bytes
x402
SHA-512/256 Base64url Digest of Hex Bytes is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).
Computes a SHA-512/256 hash of raw hex-encoded bytes and returns the result encoded as base64url
Price / call$0.001
Success—
StatusUnknown
How this service works
Call when an agent needs a sha512-256 digest of hex bytes, encoded as base64url. Exact $0.001 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-256-base64url-rawhex first.
Output
Returns the SHA-512/256 cryptographic digest of the input interpreted as raw hex bytes, encoded as a base64url string suitable for use in URLs, tokens, or compact representations.
Example use cases
Integrity check for binary payload
“I have a chunk of binary data represented as hex '4d5a9000' — can you hash it with SHA-512/256 and give me the base64url digest so I can verify its integrity later?”
Signing pipeline checksum step
“As part of my signing workflow, I need a SHA-512/256 base64url digest of this hex string: 'deadbeefcafe0123'. Can you compute that for me?”
Content fingerprinting for deduplication
“I want to fingerprint this hex-encoded raw data 'a1b2c3d4e5f6' using SHA-512/256 and get back a compact base64url string I can use as a unique identifier.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-sha512-256-base64url-rawhex?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need a SHA-512/256 digest of raw bytes supplied as hex, with the output formatted as base64url — not hex or base64. Prefer the free sandbox endpoint POST /v1/sandbox/digest-sha512-256-base64url-rawhex when available. Use this paid endpoint when the sandbox is unavailable or rate-limited. For plain SHA-256 or MD5 hex digests, use the sibling endpoint instead.
Side effects
- Invalid or non-hex input text causes a processing error
- Input text exceeds 100,000 character limit returns an error
- Empty key or text fields are rejected due to minLength:1 constraint
- Payment of $0.001 USDC not provided results in 402 Payment Required response
- Malformed hex string (odd length or invalid characters) may cause digest failure
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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