Ethereum Address Format & Checksum Validator

omnial/x402-eth-address-validate

Given an Ethereum address, checks whether it has the correct 0x-prefixed 40-hex-character format and a valid EIP-55 mixed-case checksum, flags the all-zero null address, and returns the canonical checksummed form of the address.

activeper callv3

Price

Up to $0.0811 per call; you pay what the call used

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $5.00.

Data source

Eden Engine

Computed by Eden Engine from the inputs you provide.

Use it

Your AI assistant does the work: it finds this tool, shows you the price first, runs it, and you are charged when the run finishes. There is nothing to set up for this tool in particular.

Connect once and your AI can find and run this tool, and any other it needs.

Install it Create an account

For developers: the calls your assistant makes

agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "omnial/x402-eth-address-validate" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "omnial/x402-eth-address-validate" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "omnial/x402-eth-address-validate", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "omnial/x402-eth-address-validate", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

Not connected yet? Point your MCP client at https://mcp.eden-engine.com/mcp, then copy a config for your client.

Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.0811

Updated: Nov 6, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "address"
  ],
  "properties": {
    "address": {
      "type": "string",
      "description": "Ethereum address (e.g. 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045)"
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "properties": {
    "input": {
      "type": "string",
      "description": "The address text exactly as submitted, echoed back."
    },
    "valid": {
      "type": "boolean",
      "description": "Overall verdict: true only when the address is correctly formatted AND, if a mixed-case checksum is present, that checksum is valid."
    },
    "normalized": {
      "type": "string",
      "description": "The canonical EIP-55 checksummed form of the address. Observed identical to the input when the input was already correctly checksummed, and re-cased to the correct checksum when the input's casing was wrong -- this is the form to use going forward, not necessarily a copy of what was submitted."
    },
    "format_valid": {
      "type": "boolean",
      "description": "True when the address is a well-formed 0x-prefixed 40-hex-character string, independent of checksum casing."
    },
    "checksum_valid": {
      "type": "boolean",
      "description": "True when the address's mixed-case checksum matches EIP-55. Observed false on a format_valid address with a single altered hex character -- format_valid and checksum_valid are independent checks, not one gating the other."
    },
    "is_zero_address": {
      "type": "boolean",
      "description": "True when the address is the all-zero 0x000...000 null address."
    },
    "checksum_present": {
      "type": "boolean",
      "description": "True when the address uses mixed-case letters, i.e. carries a checksum to check."
    }
  },
  "description": "The address validation result.",
  "additionalProperties": true
}