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Hex Encoding of UTF-8 Text
x402
Hex Encoding of UTF-8 Text 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).
Encodes a UTF-8 text string into its hexadecimal representation
Price / call$0.001
Success—
StatusUnknown
How this service works
Hex encoding of UTF-8 text — Genesis402 / UnyKorn Operator Network
Output
Returns a JSON object with ok=true, the type field 'encode-hex', the hex-encoded output of the input UTF-8 text, and a payment receipt containing a transaction hash, amount paid in USD, and a unique receipt ID.
Example use cases
Encoding calldata for smart contract
“I need to hex-encode this Solidity function input string 'transfer(address,uint256)' so I can use it as raw calldata in my transaction.”
Debugging hex payloads in logs
“Can you convert this log message 'Payment confirmed for order #9921' into its UTF-8 hex encoding so I can compare it against the raw bytes I'm seeing in my contract event?”
Preparing hex-encoded metadata
“Please hex-encode the text 'ipfs://QmXoypizjW3WknFiJnKLwHCnL72vedxjQkDDP1mXWo6uco' so I can store it as bytes in my on-chain NFT metadata field.”
Technical details
Endpoint
POSThttps://twin.unykorn.org/encode-hex?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a reliable, pay-per-use hex encoding service accessible via HTTP without setting up local libraries — particularly useful in blockchain/Web3 agent pipelines where hex encoding of strings is a frequent preprocessing step and a verifiable on-chain payment receipt is desirable.
Side effects
- Input text exceeds 49152 character limit — request rejected
- Malformed JSON body or missing params.text field — validation error
- Payment failure or insufficient USDC balance — 402 Payment Required
- Network timeout or provider unavailability — 503 Service Unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| params | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"type": "encode-hex",
"receipt": {
"tx_hash": "0x<64hex>",
"amount_usd": 0.25,
"receipt_id": "g402-<16hex>"
},
"generated_at": "<iso8601>"
}
}Tags
x402
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