License answers
Can I use ISC commercially, in AI training or with modifications?
Use, copy, modify and distribute for any purpose with or without fee, as long as the copyright and permission notice appear in all copies.
| Use | Answer | Why |
|---|---|---|
| commercial_use | Yes | Permitted, with duties: attribution, license_notice. |
| model_training | Needs human review | The license grants broad rights but attaches conditions (such as keeping notices) to copies and adaptations. Whether a trained model, or its output, is a copy or adaptation that carries those conditions is legally unsettled, and in some places training may fall under an exception such as fair use. A human reviewer should confirm this use for your case. |
| modification | Yes | Permitted, with duties: attribution, license_notice. |
| redistribution | Yes | Permitted, with duties: attribution, license_notice. |
| model_inference | Yes | Permitted, with duties: attribution, license_notice. |
Duties
attribution, license_notice
Check it by API (free, no key)
curl -s https://www.rightshold.com/v1/licenses/check -H 'content-type: application/json' \
-d '{"license_id":"ISC","intended_use":{"uses":["commercial_use","model_training"]}}'MCP: call check_license at https://www.rightshold.com/mcp. Connect your agent · Full reading · Legal text
An automated reading of the license text, not legal advice. Other licenses: all license answers.