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EVM Address EIP-55 Checksum Converter
x402
EVM Address EIP-55 Checksum Converter is a paid API for AI agents from agentresolver.vercel.app, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-18).
Converts a raw EVM address to its EIP-55 checksummed form and returns both lowercase and checksummed variants
Price / call$0.003
Success—
StatusUnknown
How this service works
Verify an x402 endpoint before paying: live payTo, USDC quote, network, asset, resource binding, TLS and endpoint safety for $0.001 on Base or Solana.
Output
Returns an object containing the original input address, the EIP-55 checksummed address with mixed-case hex characters, and the fully lowercase version, along with a boolean confirming EIP-55 compliance.
Example use cases
Normalize address before smart contract call
“I need to checksum this wallet address before passing it to a smart contract — can you convert 0xab5801a7d398351b8be11c439e05c5b3259aec9b to EIP-55 format?”
Validate and format user-submitted address
“A user submitted this Ethereum address in all lowercase: 0xde0b295669a9fd93d5f28d9ec85e40f4cb697bae — can you give me the proper mixed-case checksummed version?”
Prepare address for wallet display
“I want to display an Ethereum address correctly in my app. Can you checksum 0x5aaeb6053f3e94c9b9a09f33669435e7ef1beaed and give me both the checksummed and lowercase forms?”
Technical details
Endpoint
POSThttps://agentresolver.vercel.app/api/evm-address-checksumWhen to prefer
Use this endpoint when you need a fast, deterministic EIP-55 checksum conversion for a single Ethereum/EVM address, especially in agentic pipelines where you need a structured response with both checksummed and lowercase variants. Prefer this over rolling your own checksum logic when you want a reliable, API-based transformation with a clear schema.
Side effects
- Invalid or malformed address string returns an error — address must be a valid 42-character hex string starting with 0x
- Non-EVM addresses (e.g. Bitcoin, Solana) are not supported and will be rejected
- Missing required 'address' field in request body causes a validation error
- Payment failure or insufficient USDC balance prevents execution (x402 payment required)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| address | string |
Output
Schema · Response
{
"type": "json",
"example": {}
}Tags
x402
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