Verified
Crypto Sanity
Offline EVM address, payment amount and x402 payload sanity checks for agents before they sign or send crypto payments.
Offline EVM address, payment amount and x402 payload sanity checks for agents before they sign or send crypto payments. Pure computation, no caller API key, no outbound provider dependency. The gateway meters access per request over x402.
Base URL
https://gateway.apiosk.com/crypto-sanity
Endpoints
POST
/check/amount
$0.02
Check token amount decimals, dust, unusually round/precise values and mismatch against a stated invoice amount.
POST
/validate/address
$0.02
Validate an EVM address format, compute/verify EIP-55 checksum, and flag zero, burn and low-entropy address patterns.
POST
/validate/payload
$0.02
Validate the structure of an x402 payment payload before an agent signs or submits it.