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EIP-55 Ethereum Address Checksum & Validator
x402
EIP-55 Ethereum Address Checksum & Validator 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).
Applies EIP-55 mixed-case checksumming to an Ethereum address and validates whether a given address already has a correct checksum
Price / call$0.001
Success—
StatusUnknown
How this service works
EIP-55 checksum an Ethereum address, and check one — Genesis402 / UnyKorn Operator Network
Output
Returns a JSON object indicating success, the checksummed or validation result for the provided Ethereum address, along with a receipt containing a transaction hash, USD amount paid, and a unique receipt ID for the pay-per-call transaction.
Example use cases
Normalize address before on-chain transfer
“Before I send ETH to this address, can you apply the EIP-55 checksum so I know it's the correct canonical form: 0xd8da6bf26964af9d7eed9e03e53415d37aa96045?”
Validate user-submitted wallet address
“A user submitted this Ethereum address in our form: 0xFb6916095ca1df60bB79Ce92cE3Ea74c37c5d359 — can you tell me whether the checksum is correct?”
Prepare address for smart contract deployment config
“I'm putting together a config file for a smart contract and need the properly checksummed EIP-55 version of this address: 0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae”
Technical details
Endpoint
POSThttps://twin.unykorn.org/eth-checksum-address?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a pay-per-call, API-accessible EIP-55 checksum operation without running your own Ethereum library — especially useful in agent workflows where address normalization is a discrete step and you want an auditable receipt for each call. Prefer it over local computation when you need verifiable, receipted operations on the UnyKorn network.
Side effects
- Invalid or malformed Ethereum address returns an error response
- Non-hex or non-40-character address strings rejected
- Payment failure via x402 protocol results in 402 response before processing
- Network or upstream service unavailability may return 5xx errors
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| params | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"type": "eth-checksum-address",
"receipt": {
"tx_hash": "0x<64hex>",
"amount_usd": 0.25,
"receipt_id": "g402-<16hex>"
},
"generated_at": "<iso8601>"
}
}Tags
x402
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