Digital Asset Accounts SDKs

Digital Asset Accounts is Circle’s API for stablecoin accounts that you open for your end customers. Most operations are REST calls from your backend with your API key. The SDKs cover the jobs that need the end customer’s own device or browser:

Authorization for non-custodial accounts: the end customer’s device holds a hardware-backed authorization key and signs every write to their non-custodial account.
Passkey Strong Customer Authentication (SCA): in the European Economic Area (EEA), end customers confirm some operations, such as transfers, with a passkey. See Strong Customer Authentication.

Server-side and client-side SDKs

The SDKs split along the trust boundary between your backend and the end customer’s device:

Server-side: the Node.js SDK runs on your backend and calls Circle with your API key.
Client-side: the web, React Native, iOS, and Android SDKs run in your application. They never hold your API key, and your backend makes every API call. The only direct connection to Circle is the Circle-hosted passkey page, which the SDK opens with a frame token.

Choose an SDK

Your integration	What to use
Custodial accounts (`omnibus`), SCA doesn’t apply	No SDK. Call the REST API from your backend
Custodial accounts, EEA end customers who need SCA	The Node.js SDK or the REST API on your backend, plus the client-side SDK for your application’s platform
Non-custodial accounts (`custodyType` of `self`)	The React Native SDK in your application, plus a relay on your backend
Non-custodial accounts in a Swift, Kotlin, or web application	Not currently available. The iOS and Android SDKs provide the authorization key for the React Native SDK, and don’t have their own sign-in or account methods

Feature support by SDK

Feature	Node.js	Web	React Native	iOS	Android
Social login and authorization key	No	No	Yes	Through React Native	Through React Native
Create a non-custodial account	No	No	Yes	Through React Native	Through React Native
Signed transfers and withdrawals	No	No	Yes	Through React Native	Through React Native
Account, transaction, and deposit reads	No	No	Yes	No	No
Open passkey enrollments and challenges	Yes	No	No	No	No
Run the passkey enrollment and approval	No	Yes	Yes	Yes	Yes

“Through React Native” means that the React Native SDK calls the iOS or Android SDK for key storage and signing. You don’t call those methods yourself.

Availability

SDK	Package	Status
Node.js	`@circle-fin/daa-node-sdk` on npm	Available
Web	`@circle-fin/daa-web-sdk` on npm	Available
React Native	`@circle-fin/daa-react-native-sdk` on npm	Sandbox preview
iOS	`DaaSdk` for Swift Package Manager and CocoaPods	Sandbox preview
Android	`com.circle.daa:daa-android-sdk` on GitHub Packages	Sandbox preview

All SDKs use the same environment names: sandbox and production. The SDKs follow semantic versioning. Before version 1.0.0, a minor version can include breaking changes, so pin an exact version.

Developer-controlled wallets

User-controlled wallets

Modular wallets