> For the complete documentation index, see [llms.txt](https://avano.gitbook.io/public-good-nft-marketplace/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://avano.gitbook.io/public-good-nft-marketplace/technology/smart-contracts.md).

# Smart Contracts

The required smart contracts and integrations are as follows. The tech stack used to create these smart contracts are written in Solidity and JavaScript with Hardhat as a framework. Base contracts include SeaPort, ERC721, Charged Particles, and ERC20. The core marketplace functionalities will be built on [Seaport](https://docs.opensea.io/v2.0/reference/seaport-overview). Other notable contracts are Ethers, Waffle, NodeJS, and Chai.