Terms of Service

Open-source terms governing the use of the Semantic Data Type specification and registry.

1. Acceptance of Terms

By accessing or using the Semantic Data Type (SDT) portal and library browser, you agree to comply with and be bound by these Terms of Service. If you do not agree, you must refrain from using the site.

2. Licensing & Intellectual Property

The Semantic Data Type project employs a dual-licensing approach to distinguish between software tooling and specification metadata:

Software Tooling (MIT License): The Python libraries, CLI validation utilities, Eleventy website generator code, and compilation scripts are licensed under the MIT License.
Schemas & curated Library Definitions (CC0 1.0 Universal): The LinkML schema specification (sdt.yaml) and the curated registry definitions (the YAML files in the library) are dedicated to the public domain under Creative Commons CC0 1.0 Universal (Public Domain Dedication). You may copy, modify, distribute, and perform the work, even for commercial purposes, all without asking permission.

3. Disclaimer of Warranty

THE DATA AND MATERIALS IN THIS REGISTRY ARE PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES, OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE DATA OR THE USE OR OTHER DEALINGS IN THE REGISTRY.

4. Contributions

Any contributions, pull requests, or requests for new types submitted to the GitHub repository will be governed by the project's contribution guidelines and will automatically be licensed under the project's MIT License.