web3/security/security.xml

<?xml version="1.0" encoding="UTF-8"?>
<odoo>
    <record id="home_page_access" model="ir.model.access">
        <field name="name">Home Page Access</field>
        <field name="model_id" ref="model_web3_index"/>
        <field name="group_id" ref="base.group_user"/>
        <field name="perm_read" eval="1"/>
        <field name="perm_write" eval="1"/>
        <field name="perm_create" eval="1"/>
        <field name="perm_unlink" eval="1"/>
    </record>
</odoo>