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SHA3-512 Base64URL Digest
x402
SHA3-512 Base64URL Digest is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-01).
Computes a SHA3-512 cryptographic hash of input text and returns it encoded as base64url, with no network calls or LLM involvement.
Price / call$0.003
Success—
StatusUnknown
How this service works
Call when an agent needs a sha3-512 digest of text, encoded as base64url. No network and no LLM. Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-512-base64url first.
Output
Returns a SHA3-512 cryptographic digest of the submitted text, encoded as a base64url string. The output is deterministic — identical input always yields the same hash. No network requests are made during computation and no LLM is involved.
Example use cases
Document integrity fingerprinting
“I need a SHA3-512 hash of this contract text encoded as base64url so I can use it as a tamper-evident fingerprint: 'Agreement dated 2024-01-01 between Party A and Party B for services rendered.'”
API request signing preparation
“Compute the SHA3-512 base64url digest of this API payload string so I can include it in a signature header: '{"user_id":"abc123","action":"transfer","amount":500}'”
Password hashing before storage
“Take this passphrase and give me its SHA3-512 hash encoded as base64url — I need it for a custom credential store: 'correct-horse-battery-staple-2024'”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-sha3-512-base64url?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a SHA3-512 hash specifically encoded as base64url (not hex or plain base64), and want a deterministic, offline-style computation with no external network calls. Prefer the free sandbox endpoint POST /v1/sandbox/digest-sha3-512-base64url during development. Choose this paid version for production workflows where auditability or guaranteed availability matters.
Side effects
- Empty or missing 'text' field returns a validation error
- Text exceeding 100,000 characters is rejected
- Missing or empty 'key' field causes request failure
- Payment of exactly $0.003 USDC must be provided or request is rejected with 402
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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