License library / Permissive software

BSD 2-Clause "Simplified" License

Redistribute and use in source and binary forms, with or without modification, as long as the copyright notice, conditions and disclaimer are kept.

SPDX BSD-2-Clause Version 2-Clause Official text

Uses at a glance

Why some uses need review

AI model training. 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.

Duties

• give attribution / keep the notice
• license notice

Notes

• Sublicensing is not mentioned, so it is not treated as granted.

Resources under this license

No resource in the registry is published under this license yet.

For agents

curl -s https://www.a2ally.com/v1/licenses/check -H 'content-type: application/json' \
  -d '{"license":"BSD-2-Clause","intended_use":{"commercial_use":true,"deployment":true}}'

Reading version 2026-10-09 by the a2ally rights desk; reference hash 5212f04f05af6c4ca360636e0a374871ea330ad409a68df8517692e03cddf0a1 identifies this license version: it is computed over the SPDX id, the version and the official URL, not over the license text. The license text governs; this is not legal advice.

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}}'