License answers
Can I use CC BY 2.0 commercially, in AI training or with modifications?
Copy, distribute, perform and make derivative works, including commercially, as long as you give the original author credit and include the license or its URI. Common on Flickr.
| Use | Answer | Why |
|---|---|---|
| commercial_use | Yes | Permitted, with duties: attribution, license_notice, no_additional_restrictions. |
| model_training | Needs human review | 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. |
| modification | Yes | Permitted, with duties: attribution, license_notice, no_additional_restrictions. |
| redistribution | Yes | Permitted, with duties: attribution, license_notice, no_additional_restrictions. |
| model_inference | Yes | Permitted, with duties: attribution, license_notice, no_additional_restrictions. |
Duties
attribution, license_notice, no_additional_restrictions
Check it by API (free, no key)
curl -s https://www.a2ally.com/v1/licenses/check -H 'content-type: application/json' \
-d '{"license":"CC-BY-2.0","intended_use":{"commercial_use":true,"model_training":true}}'MCP: call check_license at https://www.a2ally.com/mcp. Connect your agent · Full reading · Legal text
An automated reading of the license text, not legal advice. Other licenses: all license answers.
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curl -s -X POST https://www.a2ally.com/v1/accounts/signup -H "Content-Type: application/json" -d '{"accept_terms":true}'
export A2ALLY_API_KEY=rs_... # the api_key from the reply (shown once)
curl -s https://www.a2ally.com/v1/licenses/check -H "Authorization: Bearer $A2ALLY_API_KEY" \
-H "Content-Type: application/json" -d '{"license":"MIT","intended_use":{"commercial_use":true}}'