License library / Creative Commons
Creative Commons Attribution-ShareAlike 4.0 International
Share and adapt for any purpose, including commercially, with credit; adaptations you share must carry the same or a compatible license.
SPDX CC-BY-SA-4.0 Version 4.0 Official text
Uses at a glance
| commercial use | Permitted |
|---|---|
| production deployment | Permitted |
| modification / derivatives | Permitted |
| redistribution | Permitted |
| sublicensing | Prohibited |
| AI model training | Needs human review |
| inference-time use (RAG, prompts, generation) | Permitted |
Why some uses need review
AI model training. Creative Commons licenses grant rights to reproduce and adapt the material, with conditions that apply when it or an adaptation is shared. Whether training a model creates an adaptation, and how attribution applies to a trained model or its output, is not settled; Creative Commons notes that training may also fall under exceptions such as fair use. A human reviewer should confirm this use for your case.
Duties
- give attribution / keep the notice
- license notice
- state changes
- no additional restrictions
- release distributed derivatives under the same license
Notes
- The grant is non-sublicensable: every recipient receives the license directly from the licensor (section 2(a)(5)).
- You may not apply legal terms or technical measures that restrict recipients from exercising the licensed rights (section 2(a)(5)(C)).
Resources under this license
No resource in the registry is published under this license yet.
For agents
curl -s https://www.rightshold.com/v1/licenses/check -H 'content-type: application/json' \
-d '{"license":"CC-BY-SA-4.0","intended_use":{"commercial_use":true,"deployment":true}}'Reading version 2026-10-09 by the Rightshold rights desk; reference hash 2717a442d9f8f77d644e929aad2b75d3d4c4d03be235ef985338fe162d20d758 identifies this license version. The license text governs; this is not legal advice.