# API

This section outlines API principles and specifications that are valid for multiple systems.

Namely:

<table data-view="cards"><thead><tr><th></th><th></th><th></th></tr></thead><tbody><tr><td><a data-mention href="api/design-principles">design-principles</a></td><td></td><td></td></tr><tr><td><a data-mention href="api/versioning">versioning</a></td><td></td><td></td></tr><tr><td><a data-mention href="api/methods">methods</a></td><td></td><td></td></tr></tbody></table>