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SHA-512/256 Hex Digest
x402
SHA-512/256 Hex Digest is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-01).
Computes the SHA-512/256 cryptographic hash of a given text string and returns it as a hexadecimal-encoded digest.
Price / call$0.005
Success—
StatusUnknown
How this service works
Call when an agent needs a sha512-256 digest of text, encoded as hex. No network and no LLM. Exact $0.005 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-256-hex first.
Output
Returns a hex-encoded SHA-512/256 digest string (64 characters) computed from the input text. The computation is performed locally with no network calls or LLM involvement, guaranteeing deterministic and fast results.
Example use cases
Content deduplication fingerprinting
“Hash this document text with SHA-512/256 and return the hex digest so I can use it as a deduplication key: 'User agreement version 3.2 — all rights reserved, updated May 2025.'”
API payload integrity check
“I need a SHA-512/256 hex checksum of this JSON payload string so I can attach it as a signature header before sending the request: '{"order_id":"abc123","amount":99.99}'”
Password hashing for storage
“Give me the SHA-512/256 hex digest of the string 'MyS3cur3P@ssw0rd!' so I can store the hashed version instead of the plaintext.”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-sha512-256-hex?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a SHA-512/256 (truncated SHA-512) hash specifically, as opposed to SHA-256 or SHA-3 variants. It is ideal when security policy mandates SHA-512/256 for its resistance to length-extension attacks. Prefer it over the free sandbox endpoint (/v1/sandbox/digest-sha512-256-hex) only after the sandbox is unavailable or rate-limited. It is fully deterministic, offline, and does not involve any external network requests or LLM processing.
Side effects
- Empty or missing text field returns a validation error
- Text exceeding 100,000 characters is rejected
- Missing or invalid payment (x402) results in a 402 Payment Required response
- Malformed request body returns a 400 Bad Request
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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