# @coolwallet/core > Core library for other CoolWallet SDKs. Latest version **2.0.12** (published 2026-08-24) · Apache-2.0 license · 0 weekly downloads ## Install ```sh npm install @coolwallet/core pnpm add @coolwallet/core yarn add @coolwallet/core bun add @coolwallet/core ``` ## Health **Score 65/100 (B)** — status: active. Positive: has types; no vulnerabilities; recently updated; high maintenance score; high quality score. Warnings: low downloads; no esm support. ## Facts | | | |---|---| | Version | 2.0.12 | | Published | 2026-08-24 | | First published | 2020-06-17 | | Weekly downloads | 0 | | License | Apache-2.0 | | TypeScript types | bundled | | Module format | CommonJS | | Dependencies | 16 | | Unpacked size | 2.5 MB | | Known vulnerabilities | 0 (+1 in 1 direct dependencies) | | Install scripts | no | | GitHub stars | 37 | | Author | coolwallet-team | | Maintainers | coolwallet-team | ## Links - npm: https://www.npmjs.com/package/@coolwallet/core - Repository: https://github.com/CoolBitX-Technology/coolwallet-sdk - Homepage: https://github.com/CoolBitX-Technology/coolwallet-sdk#readme - Issues: https://github.com/CoolBitX-Technology/coolwallet-sdk/issues - npm.io page: https://npm.io/package/@coolwallet/core ## Dependencies (16) - [rlp](https://npm.io/package/rlp.md) ^2.2.3 - [bip32](https://npm.io/package/bip32.md) ^2.0.4 - [bip39](https://npm.io/package/bip39.md) ^3.0.2 - [bip66](https://npm.io/package/bip66.md) ^1.1.5 - [bn.js](https://npm.io/package/bn.js.md) ^5.1.1 - [lodash](https://npm.io/package/lodash.md) ^4.17.21 - [pbkdf2](https://npm.io/package/pbkdf2.md) ^3.1.2 - [elliptic](https://npm.io/package/elliptic.md) ^6.5.3 - [jwt-decode](https://npm.io/package/jwt-decode.md) ^3.1.2 - [@types/node](https://npm.io/package/@types/node.md) ^14.0.13 - [key-encoder](https://npm.io/package/key-encoder.md) ^2.0.3 - [@types/lodash](https://npm.io/package/@types/lodash.md) ^4.14.177 - [@types/pbkdf2](https://npm.io/package/@types/pbkdf2.md) ^3.1.0 - [@types/elliptic](https://npm.io/package/@types/elliptic.md) ^6.4.14 - [@types/web-bluetooth](https://npm.io/package/@types/web-bluetooth.md) ^0.0.11 - [react-native-ble-plx](https://npm.io/package/react-native-ble-plx.md) ^2.0.3 ## Recent versions - 2.0.12 (latest) — 2026-08-24 - 2.0.10-beta.0 (beta) — 2026-08-07 - 2.0.11 — 2026-08-21 - 2.0.9 — 2026-06-23 - 2.0.8-beta.0 — 2026-05-22 - 2.0.7-beta.0 — 2026-03-20 - 2.0.6 — 2026-03-10 - 2.0.5-beta.1 — 2026-02-25 - 2.0.5-beta.0 — 2026-02-05 - 2.0.4 — 2025-08-28 - 2.0.3-beta.3 — 2025-06-03 - 2.0.3-beta.2 — 2025-05-23 - 2.0.3-beta.1 — 2025-05-23 - 2.0.2 — 2025-05-23 - 2.0.2-beta.1 — 2025-05-16 - … 166 more at https://npm.io/package/@coolwallet/core/versions ## README # CoolWallet Core SDK CoolWallet Software Development Kit is built with Typescript, which handles the APDU requests, cryptography and some common logics. ![version](https://img.shields.io/npm/v/@coolwallet/core) ![Typed with TypeScript](https://flat.badgen.net/badge/icon/Typed?icon=typescript&label&labelColor=blue&color=555555) [![code style: prettier](https://img.shields.io/badge/code_style-prettier-ff69b4.svg?style=flat-square)](https://gitter.im/jlongster/prettier) ## Install ```shell npm install @coolwallet/core ``` ## Project Structure | Directory | Features | |:------------: |:---------------------------------------------------------------------------------------------------------------------------------------------------------------------------: | | apdu | Collections of APDU and MCU commands. | | coin | Key derivation functions base on `ECDSA` and `EDDSA` algorithms.
All `@coolwallet/coin` packages will need to inherit `Coin` to work with Coolwallet SDK. | | config | Config values and some pieces of information about the Coolwallet, ex. error codes/messages. | | crypto | Commonly used cryptography, ex. `hmac-sha512`, `sha256`. | | device | Maintain Bluetooth device connection and using `Transport` to communicate with Bluetooth device. | | error | CoolWallet SDK internal error handler. | | setting | Authentication settings for CoolWallet. | | transcaction | Functions often used when creating transactions. | | transport | Have two abstract classes, `BleManager` and `Transport`.
`BleManager` is responsible for `Bluetooth` status management and `Transport` is responsible for data transfer. | | utils | Commonly used utilities, ex. serialize and deserialize the message from Bluetooth device. | --- _Source: https://npm.io/package/@coolwallet/core · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._