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SHA3-256 Hash Digest API
x402
SHA3-256 Hash Digest API is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Computes a SHA3-256 cryptographic digest from plain text or raw hex-encoded bytes
Price / call$0.001
Success—
StatusUnknown
How this service works
SHA3-256 digest of text or raw bytes — Genesis402 / UnyKorn Operator Network
Output
Returns a JSON object with ok:true, the hash type ('hash-sha3-256'), and a receipt containing the blockchain transaction hash, USD amount paid, and a unique receipt ID, along with a generated_at ISO8601 timestamp.
Example use cases
Data integrity checksum for a file
“Hash this raw file content as hex bytes so I can use it as a SHA3-256 integrity checksum: 0x48656c6c6f20576f726c64”
Deterministic content fingerprint
“Give me the SHA3-256 digest of the string 'user:alice@example.com:2024-06-01' — I need a stable fingerprint to use as a content ID.”
Smart contract input hashing
“Compute the SHA3-256 hash of this hex-encoded calldata 0xabcdef1234567890 so I can verify it matches the on-chain digest before submitting the transaction.”
Technical details
Endpoint
POSThttps://twin.unykorn.org/hash-sha3-256?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a SHA3-256 (not SHA2-256 or Keccak-256) digest of either plain text or raw hex-encoded bytes, especially in agentic or blockchain-adjacent workflows where on-chain payment receipts are required or useful for auditability. Prefer it over local hashing when a receipted, auditable proof-of-computation is needed.
Side effects
- Invalid hex format (not matching ^0x[0-9a-fA-F]*$) returns a validation error
- Text input exceeding 49152 characters is rejected
- Missing both hex and text parameters may return an error
- Payment failure or insufficient funds results in a 402 response
- Malformed JSON request body causes a parsing error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| params | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"type": "hash-sha3-256",
"receipt": {
"tx_hash": "0x<64hex>",
"amount_usd": 0.001,
"receipt_id": "g402-<16hex>"
},
"generated_at": "<iso8601>"
}
}Tags
x402
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