Practical overview
When it fits
Use the package suite when an application needs Crossmint-related blockchain, authentication, wallet, NFT or credential capabilities and a client or server SDK is an appropriate integration point.
Who it is for
- Developers adding blockchain or wallet functionality to web applications.
- Teams integrating authentication, NFT checkout or verifiable credentials into client applications.
- Backend developers connecting application services to Crossmint functionality.
Documented uses
- Install and import an SDK package into an application.
- Add client-side wallet, authentication or UI integrations.
- Connect a backend using the server-side SDK.
- Build and modify the SDK packages locally.
Requirements & limits
The SDK repository is public and specifies an Apache-2.0 license. Local repository builds require Node.js 20.19.4 or later and pnpm.
- Choose among packages by integration role: React or React Native UI, headless client libraries, wallets, or server-side functionality.
- The README identifies EVM and Solana support for the headless wallets SDK.
- The README marks
@crossmint/client-sdk-smart-walletas deprecated and lists@crossmint/wallets-sdkfor wallet integrations. - The repository includes separate quickstarts for wallets, hosted checkout and fintech applications.
Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.
Build the SDK repository locally
Install dependencies and build the SDK packages from the repository.
Before you start
- Node.js 20.19.4 or later
- pnpm
Steps
Clone
https://github.com/Crossmint/crossmint-sdk.git.Change into the
crossmint-sdkdirectory.Run
pnpm installto install dependencies.Run
pnpm buildto build all packages.
Expected outcome
The documented local build process has been run for the SDK packages.
Guide limitations
- This guide covers repository setup and building, not deploying an application or validating a particular integration.
Sources & review
Source record details
- Source availability
- Active
- Sources checked
- 8 October 2026
- Original website title
- Crossmint/crossmint-sdk · Official homepage title · retained in its source language

