# Introduction
BUIDLer is a react component that allows plug-and-play integration with the Etherspot SDK, allowing dApps and developers to easily leverage the SDK in a highly customisable fashion.
## In a nutshell
The Etherspot BUIDLER React component allows anyone to implement transfers, contract interactions, swaps, crosschain bridging and more into their own dApp with just a few lines of code.
The BUIDLER component takes care of the technical requirements behind the scenes to provide a great user experience to your users.
## Everything is a "block"
One of the most important concepts to understand is that every **action** that a user can perform is represented as a **block**. Each block can be performed as a batch transaction (where several actions are executed as one transaction) or in a sequence (where each transaction happens one after another).
We've included several blocks that help facilitate actions out the box, and we've created a guide on how to create your own block.
## Take it for a spin, now
Head over to to see what you can do before you start the [Installation](/buidler-react-component/installation.md).
Devs can test on mainnet using Gnosis Chain, and adding funds to their wallet with [this faucet.](http://www.gnosisfaucet.com/)
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