Given an address, from a web application I'm attempting to determine if there's a contract deployed at the address. There are some ways to do this with etherscan or other block explorer APIs, but I'm curious if this is possible directly from a node (perhaps from a node with instrumentation or debugging turned on?)



You can use the getCode API. If that call returns 0x, there is no contract at that address. If it returns anything other than 0x, there is a contract at that address.

As an example:

> "0x600160008035811a818181146012578301005b601b6001356025565b8060005260206000f25b600060078202905091905056"

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.