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AgentsToolsHub EVM Address Validator
x402
AgentsToolsHub EVM Address Validator is a paid API for AI agents from agentstoolshub.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-17).
Validates an EVM address with syntactic checks and EIP-55 keccak-256 mixed-case checksum verification, returning the canonical checksummed form or an explicit error on checksum mismatch.
Price / call$0.002
Success—
StatusUnknown
How this service works
Validate an EVM address: syntactic checks plus the EIP-55 checksum test (keccak-256 mixed-case). Returns the canonical checksummed form, flags addresses pasted with a broken checksum, and never guesses — an invalid checksum is an error, not a silent fix. Use this when an agent needs to eIP-55 checksum check + canonical form.
Output
Returns the canonical EIP-55 checksummed Ethereum address if valid, or an explicit error indicating the checksum is broken or the address is syntactically invalid — never silently corrects a bad checksum.
Example use cases
Pre-transfer wallet address check
“Before I send any ETH, validate this address for me and confirm the EIP-55 checksum is correct: 0xAb5801a7D398351b8bE11C439e05C5b3259aec9b”
Smart contract address verification
“I just copied this contract address from a website — can you verify its EIP-55 checksum is intact and give me the canonical form: 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D”
Flagging a broken checksum from user input
“A user submitted this Ethereum address in our form: 0xd8da6bf26964af9d7eed9e03e53415d37aa96045 — does it have a valid EIP-55 checksum, or is it malformed?”
Technical details
Endpoint
GEThttps://agentstoolshub.com/api/v1/crypto/address-validate?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need strict EIP-55 checksum enforcement with no silent correction — it flags broken checksums as errors rather than auto-fixing them, making it ideal for input validation pipelines where a mismatched checksum should block a transaction or alert the user.
Side effects
- Address fails EIP-55 checksum test — returns error rather than silently correcting
- Address is syntactically invalid (wrong length, non-hex characters) — returns validation error
- Missing required 'address' query parameter — returns bad request error
- Network timeout or service unavailability
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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