# Axonum Testnet - [Differences From Ethereum](https://docs.axonum.io/chain/differences.md): Axonum is designed to be EVM equivalent and introduces as few changes as possible to the Ethereum protocol. However, there are some minor differences between the behavior of Ethereum and Axonum. - [Networks and RPC Endpoints](https://docs.axonum.io/chain/networks.md): The public RPC URLs provided below are rate limited and do not support websocket connections. - [Contract Addresses](https://docs.axonum.io/chain/addresses.md): This reference guide lists all the contract addresses for Testnet. - [AI Precompiles](https://docs.axonum.io/chain/precompiles.md): A precompile is a special contract that is compiled into the EVM and is executed by the EVM itself. Precompiles are used to provide additional functionality to developers building on Axonum. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.axonum.io/chain.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.