Developer

Every week, we bring you the key builder updates and developments from across the Ethereum ecosystem.

We are making updates to the Free API tier and overall chain coverage. Here is what is changing and what it means for you.

The Similar Contracts Search tool helps you discover contracts with similar source code, deployed across various EVM chains via explorers powered by Team Etherscan.

The Contract Diff Checker is a tool that lets you compare two smart contract source code files side by side. Any differences between the files will be automatically highlighted.

Building a multichain portfolio tracker with Etherscan API.

Access a world of EVM data with a single API key.

An introduction to Application Binary Interface (ABI).

A beginner's guide on how to start using Etherscan APIs

A quick tutorial on verifying smart contract codes on Etherscan.

During the enforcement of the API key requirement, developers will expect the return errors listed, where an API key is not in use or exceeding the rate limit.