Thank you for investing your time in contributing to our project! :sparkles:.

Read the Code of Conduct to keep our community approachable and respectable. (We adopted GitHub’s open source code of conduct.)

Contribute Your Metrics

We welcome every metric contribution, be it new or established. The easiest way is to open a new issue on the PSI-MS CV repository with our New QC Term template. You can read more detail about the process on the Metrics page.

New contributor guide

To get an overview of the project, read the README on GitHub.

Getting started

A good starting point is our website to get informed on the format and it’s mechanistics, how to get in touch with us, ongoing issues, and related projects.


We use GitHub’s issue tracking system to stay on-top of new developments and arising issues. It is generally a good idea to file a new issue before you start making changes to the project (fork).

Create a new issue

If you spot a problem, search if an issue already exists. If a related issue doesn’t exist, you can open a new issue using a relevant issue form.

Request a new metric

If you miss a specific metric, you can request it’s addition via the issue system. It might be good if you’d familiarise yourself with mzQC and CV metric representation in particular. We have a dedicated issue template for the request of new QC terms in the PSI-MS-CV repository.

Solve an issue

Scan through our existing issues to find one that interests you. You can narrow down the search using labels as filters. See Labels for more information. As a general rule, we don’t assign issues to anyone. If you find an issue to work on, you are welcome to open a PR with a fix.

Make Changes

  1. Fork the repository.
  2. Create a working branch and start with your changes!
  3. Commit your update(s).

Pull Request

When you’re finished with the changes, create a pull request, also known as a PR.

  • Fill the “Ready for review” template so that we can review your PR. This template helps reviewers understand your changes as well as the purpose of your pull request.
  • Don’t forget to link PR to issue if you are solving one.
  • Enable the checkbox to allow maintainer edits so the branch can be updated for a merge. Once you submit your PR, a team member will review your proposal. We may ask questions or request for additional information.
  • We may ask for changes to be made before a PR can be merged, either using suggested changes or pull request comments. You can apply suggested changes directly through the UI. You can make any other changes in your fork, then commit them to your branch.
  • As you update your PR and apply changes, mark each conversation as resolved.
  • If you run into any merge issues, checkout this git tutorial to help you resolve merge conflicts and other issues.


Labels can help you (and us) find and organise issues more readily. Here are some labels explained:

  • The help wanted label is for problems or updates that anyone in the community can start working on.
  • The good first issue label is for problems or updates we think are ideal for beginners.
  • The schema label is for problems or updates to the mzQC format itself. These are considered with the outmost care and detail.
  • The documentation labels (specification document and website) label issues found in the specification document or with documentation content (such as the website)
  • The CV label is for issues and discussion about the metrics and our CV integration.
  • obsolete: request for new CV entry (We merged with PSI-MS-CV, see labels there.)

Your PR is merged!

Congratulations :tada::tada: The mzQC team thanks you :sparkles:.

Once your PR is merged, your contributions will be publicly visible on the repo.