1. 1. Introduction
2. 2. Technical documentation
3. 1. 2.1. Onionoo Web API
   2. 2.2. Applications using this Web OpenAPI
   3. 2.3. This Webapp OpenAPI design
   4. 2.4. Libraries to generate OpenAPI specification from code
   5. 2.5. Web OpenAPI diagrams
   6. 2.6. Class diagrams