> For the complete documentation index, see [llms.txt](https://docs.giwa.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.giwa.io/giwa-chain/en/get-started/smart-contract/develop.md).

# Develop Smart Contracts

Want to develop smart contracts on GIWA?

Follow the guide below to set up your development environment and learn how to build and deploy contracts directly on the GIWA Sepolia Testnet.

***

## Smart contract development

The GIWA chain runs smart contracts on the Ethereum Virtual Machine (EVM), just like Ethereum. The EVM executes low-level instructions called opcodes, similar to how a computer executes machine code.

Developing a smart contract means creating a program that can run on the EVM, compiling it into bytecode, and storing it on-chain for execution.

Because raw opcodes are difficult to work with, developers typically use high-level languages such as [Solidity](https://soliditylang.org/) or [Vyper](https://vyperlang.org/). Solidity has a syntax similar to JavaScript/TypeScript and is the most widely used language among Ethereum developers. Vyper has a syntax closer to Python, designed for readability.

In this guide, we’ll use Solidity, the most common choice for developers.

***

## Setting up the development environment

To develop smart contracts in Solidity, you need a development environment and developer tools.

You can do it with:

* Foundry
* Hardhat
* Remix IDE

Check out the documentations below to learn how to develop using each tool.

{% content-ref url="/pages/gI5IXP07auKJry5orsZS" %}
[Develop with Foundry](/giwa-chain/en/get-started/smart-contract/develop/foundry.md)
{% endcontent-ref %}

{% content-ref url="/pages/N4xpugcqLPvG5GxoqZrC" %}
[Develop with Hardhat](/giwa-chain/en/get-started/smart-contract/develop/hardhat.md)
{% endcontent-ref %}

{% content-ref url="/pages/rmCmC3J1P0NPbdX0czZ9" %}
[Develop with Remix IDE](/giwa-chain/en/get-started/smart-contract/develop/remix-ide.md)
{% endcontent-ref %}


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.giwa.io/giwa-chain/en/get-started/smart-contract/develop.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

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.
