LICENSE

# Open Source License

Yao Engine is licensed under a modified version of the Apache License 2.0, with the following additional conditions:

1. Commercial Usage Terms:
   Yao Engine may be utilized commercially, A commercial license from the producer is required if:

   a. Trademark and Branding Requirements

   - The Yao Engine / Yao Agents / Tai / Tai Link console/application logo and copyright information must not be removed or modified
   - Logo and copyright information can only be changed with an authorization certificate issued through Yao Developer Certificate

   b. Authorization Verification Requirements

   - The Yao certificate verification logic, processes, and related pages (marked in code comments) must be preserved
   - The complete Yao certificate verification system must be maintained regardless of usage purpose

   c. Enterprise Scale Requirements

   - Organizations with 50 or more employees, or with annual revenue exceeding USD 1,000,000, must obtain a commercial license from Infinite Wisdom Software.
   - To obtain a commercial license, please contact us at https://yaoagents.com/enterprise

2. Contributor Agreement:
   As a contributor, you should agree that:
   a. Infinite Wisdom Software can adjust the open-source agreement to be more strict or relaxed as deemed necessary.
   b. Your contributed code may be used for commercial purposes, including but not limited to its cloud business operations.

All other rights and restrictions follow the Apache License 2.0 (http://www.apache.org/licenses/LICENSE-2.0).

© 2026 Infinite Wisdom Software.