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SHA-512 Hex Digest API
x402
SHA-512 Hex Digest API is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.007/call, status unknown (last checked 2026-10-01).
Computes a SHA-512 cryptographic hash of input text and returns the result encoded as a hexadecimal string.
Price / call$0.007
Success—
StatusUnknown
How this service works
Call when an agent needs a sha512 digest of text, encoded as hex. No network and no LLM. Exact $0.007 USDC. Prefer unpaid POST /v1/sandbox/digest-sha512-hex first.
Output
Returns a 128-character lowercase hexadecimal string representing the SHA-512 digest of the submitted text. The computation is fully deterministic, offline (no external network calls), and requires no language model — identical input always produces identical output.
Example use cases
File integrity checksum generation
“I need to verify a document hasn't been tampered with — compute the SHA-512 hex hash of this text so I can store it as a checksum: 'Invoice #4892: Total $4,250.00, due 2024-06-01, client Acme Corp.'”
Deterministic ID for deduplication
“Generate a SHA-512 hex digest of this article body so I can use it as a unique fingerprint to detect duplicate content: 'The quick brown fox jumps over the lazy dog. Repeated submissions waste reviewer time.'”
Password pre-hashing before storage
“Hash this passphrase with SHA-512 and give me the hex output before I send it to the server: 'correct-horse-battery-staple-2024'”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-sha512-hex?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a standard SHA-512 hash with hex encoding specifically — not base64, base32, or base64url. Prefer the free sandbox endpoint POST /v1/sandbox/digest-sha512-hex for testing or cost-sensitive workflows. Use this paid endpoint when the sandbox is unavailable or when you need production-grade reliability. For shorter hashes, sibling endpoints offer MD5, SHA-224, or SHA3 variants; for different encodings of SHA-512, check sibling endpoints on the same host.
Side effects
- Empty or missing text field returns a validation error
- Text exceeding 100,000 characters is rejected
- Missing or invalid API key (key field) returns an authentication error
- Payment failure (insufficient USDC) results in HTTP 402
- Malformed JSON 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
Reviews
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Zero review prompt (fires after every successful call)
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