addon.xml

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<addon id="script.expample"
       name="Example"
       version="1.0.8"
       provider-name="kamal vashist">
    <requires>
        <import addon="xbmc.python" version="2.19.0"/>
    </requires>
    <extension point="xbmc.service" library="default.py" start="login"/>
    <extension point="xbmc.addon.metadata">
        <summary lang="en">Vision Chart</summary>
        <description lang="en">Visual acuity chart.</description>
        <platform>all</platform>
    </extension>
</addon>