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SHA3-256 Base64 Digest API
x402
SHA3-256 Base64 Digest API is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-01).
Computes a SHA3-256 cryptographic hash of input text and returns it encoded as a base64 string
Price / call$0.004
Success—
StatusUnknown
How this service works
Call when an agent needs a sha3-256 digest of text, encoded as base64. No network and no LLM. Exact $0.004 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-256-base64 first.
Output
Returns a base64-encoded SHA3-256 digest string representing the cryptographic hash of the submitted text input. The result is deterministic and identical for the same input every time.
Example use cases
Content integrity fingerprinting
“Take this document text and compute its SHA3-256 hash as base64 so I can store a tamper-evident fingerprint alongside it.”
Deterministic ID generation
“Hash this user input string 'order-ref-20240517-ABC' using SHA3-256 and return the base64 result so I can use it as a unique, deterministic identifier.”
Verifying checksums for security
“I have this payload text and a claimed SHA3-256 base64 checksum — can you compute the SHA3-256 base64 digest of the text so I can compare it against the claimed value to check for tampering?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-sha3-256-base64?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a SHA3-256 hash specifically encoded as base64 (not hex or base32). Prefer this over MD5 or BLAKE2 variants when SHA3-256 is required for security compliance or interoperability. Use the free sandbox endpoint (/v1/sandbox/digest-sha3-256-base64) first for testing before paying $0.004 USDC per call. Prefer this over doing hashing client-side if you need a trusted, stateless, no-network, no-LLM cryptographic computation as a service.
Side effects
- Text input is empty or exceeds 100,000 character limit — returns validation error
- Missing or invalid API key — returns authentication error
- Malformed request body — returns schema validation error
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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