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Crypto Sanity Address Validator
x402
Crypto Sanity Address Validator is a paid API for AI agents from gateway.apiosk.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Validates a cryptocurrency wallet address for a given blockchain, checking format correctness, checksum validity, and risk flags
Price / call$0.02
Success—
StatusUnknown
How this service works
Validate an EVM address format, compute/verify EIP-55 checksum, and flag zero, burn and low-entropy address patterns.
Output
Returns a JSON object with: ok (boolean, request success), valid (boolean, whether the address is valid for the given chain), checksum_valid (boolean, whether the address passes checksum verification), and risk_flags (array of strings listing any detected risk indicators such as known scam addresses or blacklisted addresses)
Example use cases
Example prompt
“Can you check if this Ethereum address is valid and has no risk flags before I send funds to it: 0x742d35Cc6634C0532925a3b844Bc454e4438f44e?”
Technical details
Endpoint
POSThttps://gateway.apiosk.com/crypto-sanity/validate/addressWhen to prefer
Use this endpoint when you need to verify a cryptocurrency wallet address before executing a transaction, onboarding a new payment recipient, or validating user-submitted addresses in a web3 application. It is especially valuable when you need both format/checksum validation and basic risk/compliance screening in a single call. Prefer this over simple regex checks when you need risk flag detection.
Side effects
- Invalid or unsupported chain identifier returns an error or valid:false
- Malformed request body missing required fields returns a 400-level error
- Empty address string may return valid:false with no risk_flags
- Unknown or newly added chains may not be supported, returning an error
- Network timeout or upstream service unavailability returns a 5xx error
Tags
x402
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Zero review prompt (fires after every successful call)
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