---
title: Modules
slug: signum/modules
docTags:
createdAt: 2022-08-30T21:54:48.000Z
---
SignumJS is maintained in a so called [monorepo](https://en.wikipedia.org/wiki/Monorepo) [norepo](#)and splitted in several modules. From an architectural perspective the modules share different types of dependendencies, where e.g. the [Http Module](docId\:IitaCfK9K4RH4Fp3RCLlW) or [Util Module](docId\:LnQgckbaeW22BCPR_LkO_) does not have any dependency of other modules, while the [Core Module](docId\:D5ozZFZwnPOYaXjK854O9) depends on http, util, and crypto module
::Image[]{src="https://api.archbee.com/api/optimize/l2AIpSUU6srSQmG1-K2bb/BwP6gbD_z-x982S7Er5j-_signumjs-atomic-scheme.png" size="98" width="841" height="754" caption="Modularization Architecture" position="center" showCaption="true"}
[](https://www.npmjs.com/package/@signumjs/core)
| Module | Description | Package |
| ------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------ |
| [Core Module](docId\:D5ozZFZwnPOYaXjK854O9) | The main module providing an extense API for blockchain interaction | [@signumjs/core](https://www.npmjs.com/package/@signumjs/core) |
| [Crypto Module](docId\:DoH84qh7bi5exXQdFprV-) | The cryptographic functions, like encryption, and key generation, signing, and verification | [@signumjs/crypto](https://www.npmjs.com/package/@signumjs/crypto) |
| [Util Module](docId\:LnQgckbaeW22BCPR_LkO_) | This is the tool belt around SignumJS providing most useful conversion functions. | [@signumjs/util](https://www.npmjs.com/package/@signumjs/util) |
| [Wallets](docId:8M6lot5IYgFP94DJtsVRq) | This package provides all to interact with wallets, using either deeplinking for desktop and mobile wallets and full-duplex interaction with the [XT Wallet](https://github.com/signum-network/signum-xt-wallet) | [@signumjs/wallets](https://www.npmjs.com/package/@signumjs/wallets) |
| [Contracts Module](docId\:uO92OephIQ54C2Vi91okD) | The module especifically relevant for interaction with *smart contracts* | [@signumjs/contracts](https://www.npmjs.com/package/@signumjs/contracts) |
| [Http Module](docId\:IitaCfK9K4RH4Fp3RCLlW) | A thin Http wrapper, with consistent response types, and exception handling. It wraps the famous [axios](#)[axios](https://axios-http.com/) library. | [@signumjs/http](https://www.npmjs.com/package/@signumjs/http) |
### Install Packages
The installation of the packages always follows the same pattern
:::CodeblockTabs
npm
```shell
npm i @signumjs/core
npm i @signumjs/contracts
npm i @signumjs/crypto
npm i @signumjs/util
npm i @signumjs/http
npm i @signumjs/wallets
```
yarn
```shell
yarn add @signumjs/core
yarn add @signumjs/contracts
yarn add @signumjs/crypto
yarn add @signumjs/util
yarn add @signumjs/http
yarn add @signumjs/wallets
```
\
```html
```
:::