What is CIP-30?

A CIP or Cardano Improvement Proposal is a proposed solution to assist in the evolution of the Cardano ecosystem. It is intended to help improve Cardano’s technical development in a transparent manner.

The CIP program was launched in 2019 by the Cardano Foundation to offer a collaborative way for the Cardano community to give feedback, propose solutions, and take on an active, engaging role in improving Cardano’s overall development.

In an effort to make Cardano DApp development simpler, CIP-30 was a specific proposal that had been accepted to form a standard for wallet-web bridges, or DApp connectors, to follow for consistency purposes.

This means that DApps can write code that interacts with Yoroi or any CIP30-compatible wallet.

As long as those wallets follow the CIP-30 standard, they can allow their users to choose which wallet they would like to connect with their DApp. The code written by the DApp can mostly be reused since the wallet APIs will have standardized returned messages.

Along with the APIs defined by the CIP-30 standard, wallets themselves can choose to implement their own functionality. However, this functionality is recommended to be put under an “experimental” tag, so that DApps who wish to, can use them, but understand that it may only be available on that specific wallet.

This means that a DApp that uses an API from a wallet that is not compatible with the CIP-30 standard won’t be able to integrate the rest of the wallets that are compatible with the CIP-30 because using an experimental API is breaking the CIP-30 standard and the compatibility between different wallets.

The details of these APIs are given at https://cips.cardano.org/cips/cip30/#transactionunspentoutput

Updated on: 14/08/2025