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SHA3-256 Hex Digest of Raw Hex Bytes
x402
SHA3-256 Hex Digest of Raw Hex Bytes is a paid API for AI agents from agentshelf.syntexa.ch, paid per call via x402, $0.009/call, status unknown (last checked 2026-10-02).
Computes a SHA3-256 hash of raw hex-encoded bytes and returns the digest as a hex string
Price / call$0.009
Success—
StatusUnknown
How this service works
Call when an agent needs a sha3-256 digest of hex bytes, encoded as hex. Exact $0.009 USDC. Prefer unpaid POST /v1/sandbox/digest-sha3-256-hex-rawhex first.
Output
Returns a SHA3-256 hash digest of the provided hex-encoded byte input, encoded as a lowercase hex string. The digest is deterministic and fixed-length (64 hex characters for SHA3-256).
Example use cases
Blockchain transaction data integrity check
“I have a raw transaction payload in hex — '0x4a3f9b...' — can you SHA3-256 hash it and give me the hex digest so I can verify it matches the on-chain fingerprint?”
Cryptographic fingerprint for hex binary blob
“I've got a binary blob stored as hex: 'c0ffee1234abcd'. Can you run it through SHA3-256 and return the hex digest for me to use as a checksum?”
Verify hex payload integrity in pipeline
“Before I store this sensor reading — encoded as hex bytes 'a1b2c3d4e5f6' — can you SHA3-256 hash it so I can later confirm no data corruption occurred?”
Technical details
Endpoint
POSThttps://agentshelf.syntexa.ch/v1/digest-sha3-256-hex-rawhex?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need a SHA3-256 hash of raw hex-encoded bytes with hex output — particularly for blockchain, smart contract, or cryptographic workflows where SHA3-256 (Keccak variant or NIST standard) is required over SHA2 alternatives. Use the free sandbox endpoint (/v1/sandbox/digest-sha3-256-hex-rawhex) first if available to avoid the $0.009 USDC charge.
Side effects
- Invalid or malformed hex input may cause a 400 error
- Input text exceeding 100,000 characters will be rejected
- Missing required key or text fields returns a validation error
- Payment failure or insufficient USDC balance returns a 402 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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