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Contributing to Hyperledger Composer

We welcome contributions to the code base. There is a contributors RocketChat channel that we would encourage you to join and introduce yourself on.

There are multiple components within Composer, which can be conceptually viewed using the mindmap.

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These components are split across multiple Composer repositories within the Hyperledger project. The repositories are:

Raising an Issue

If you have a question or problem that relates to general support, please ask the question on either RocketChat or Stack Overflow, where the question should be tagged with 'hyperledger-composer'. We would like to exclusively use GitHub issues for bug reports and feature requests.

If you find a bug in the source code, an error in any documentation, or would like a new feature, you can help us by raising an issue to our GitHub Repository or delivering a fix via a pull request.

Raising a Composer Improvement Proposal

If you have a suggestion for a Composer Improvement Proposal (CIP), for a feature that is not yet present and you would like to have, please raise an issue using a CIP template and tag the issue with the label improvement proposal.

Getting Started

In order to assist anybody starting from scratch, we have produced guides on setting up a development environment.

Start with the Step-by-step development environment setup

Everything installed and ready code? Great! Issues are tracked in GitHub, if you are looking for a place to start with the code then it might be worth tackling a bug or look for those issues tagged with help wanted or good first issue - the latter being a good issue for first-time contributors.


Hyperledger Project source code files are made available under the Apache License, Version 2.0 (Apache-2.0), located in the LICENSE file. Hyperledger Project documentation files are made available under the Creative Commons Attribution 4.0 International License (CC-BY-4.0), available at