# Sage Individual Contributor License Agreement

**Version 1.0**

Thank you for contributing to Sage.

This agreement clarifies the intellectual-property rights granted with
contributions from any person or entity. It protects you, the project, and its
users. **You keep the copyright in your contribution** — this is a license, not
an assignment.

You accept and agree to the following terms for your past, present and future
contributions to Sage. Except for the licenses granted here, you reserve all
right, title and interest in and to your contributions.

## 1. Definitions

**"You"** means the copyright owner, or the legal entity authorised by the
copyright owner, entering into this agreement.

**"Contribution"** means any original work of authorship, including any
modification of or addition to an existing work, that you intentionally submit
to Sage for inclusion in the project. "Submit" means any form of electronic or
written communication sent to the project or its maintainers, including but not
limited to pull requests, issues, and patches sent by email, but excluding any
communication you conspicuously mark "Not a Contribution".

**"Maintainer"** means Elunor (CVR no. 46462041), the copyright holder of Sage,
and any successor in interest to the project.

The successor clause is deliberate: it carries these grants across a future
change of legal form or a transfer of the project, so contributors are never
asked to sign again for the same work.

## 2. Copyright license

You grant the Maintainer a perpetual, worldwide, non-exclusive, royalty-free,
irrevocable copyright license to reproduce, prepare derivative works of,
publicly display, publicly perform, sublicense, and distribute your
contributions and such derivative works.

**This license includes the right to license your contribution under terms of
the Maintainer's choosing, including licenses other than the AGPL-3.0**, and to
relicense the project as a whole.

This is what makes it possible to offer Sage both as free, self-hostable
software under the AGPL and, if ever needed, under a separate commercial license
to organisations that cannot accept copyleft terms. Without this grant, a single
contribution would permanently foreclose that option for the whole project.

## 3. Patent license

You grant the Maintainer and every recipient of software distributed by the
project a perpetual, worldwide, non-exclusive, royalty-free, irrevocable patent
license to make, have made, use, offer to sell, sell, import and otherwise
transfer your contribution.

This license applies only to patent claims you own or control that are
necessarily infringed by your contribution alone, or by the combination of your
contribution with the project.

If any entity brings patent litigation alleging that the project or a
contribution within it constitutes patent infringement, any patent licenses
granted under this agreement to that entity terminate as of the date the
litigation is filed.

## 4. Your representations

You represent that:

- You are legally entitled to grant the above licenses.
- Each of your contributions is your original creation, or you have the
  necessary rights to submit it.
- If your employer has rights to intellectual property you create, you have
  received permission to make the contributions on behalf of that employer, or
  your employer has waived such rights, or your employer has executed a separate
  corporate agreement with the Maintainer.
- You will notify the Maintainer if you become aware of any fact or circumstance
  that would make any of these representations inaccurate.

## 5. Third-party work

If you wish to submit work that is not your original creation, you may submit it
separately from any contribution, identifying it clearly and noting its source
and any license or other restriction of which you are personally aware.

## 6. No obligation and no warranty

You are not expected to provide support for your contributions, except to the
extent you wish to. Unless required by applicable law or agreed in writing, you
provide your contributions **on an "as is" basis, without warranties or
conditions of any kind**, either express or implied, including without
limitation any warranty of title, non-infringement, merchantability, or fitness
for a particular purpose.

The Maintainer is under no obligation to accept, merge, or use any contribution.

---

## How to sign

Sign by commenting on your pull request with exactly:

```
I have read the CLA Document and I hereby sign the CLA
```

An automated check records your signature against your GitHub account and this
agreement version. You sign once; later pull requests are recognised
automatically. If this agreement changes materially, you will be asked to sign
the new version.

---

_This document is adapted from the widely used individual contributor license
agreement pattern established by the Apache Software Foundation. It is provided
for the project's own use and is not legal advice to contributors; if you are
contributing in a professional capacity, consider reviewing it with your own
counsel or employer._