A half-open laptop in a dark room
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Indy SDK


Hyperledger Indy is the software foundation for private, secure, and powerful identity. Specifically, it’s a collection of tools, libraries, and reusable components that use a distributed ledger.

The Indy SDK provides everything needed to build applications that interact with Indy. If you simply use Aries frameworks and higher layers for your Verifiable Credentials projects, you probably do not need to concern yourself with Indy and other lower layers.


Diagram showing the relationship between various VC technologies.


  • C-callable library, with convenience wrappers provided for different languages
  • CLI tool also available

Developer starting points


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