ExpressionEngine's Hooks
Developers can hook into the core files to extend ExpressionEngine's native functionality by using any of the hooks included in the core files.
There are 200 hooks for ExpressionEngine development. You can view this same list at the official landing page for the hooks in the EE developer docs. Viewing any hook's page will show every add-on known to use that hook.
EE 1
EE 2
control_panel_home_page_left_option
Currently used in 4 add-ons.
EE 1
EE 2
control_panel_home_page_right_option
Currently used in 5 add-ons.
EE 1
EE 2
core_template_hook
Not currently used.
EE 1
EE 2
core_template_route
Currently used in 2 add-ons.
EE 1
EE 2
cp_css_end
Currently used in 8 add-ons.
EE 1
EE 2
cp_display_page_navigation
Currently used in 3 add-ons.
EE 1
EE 2
cp_js_end
Currently used in more than 10 add-ons.
EE 1
EE 2
cp_members_member_create
Currently used in more than 10 add-ons.
EE 1
EE 2
cp_members_member_create_start
Currently used in 1 add-on.
EE 1
EE 2
cp_members_member_delete_end
Currently used in 6 add-ons.
EE 1
EE 2
cp_members_validate_members
Currently used in 4 add-ons.
EE 1
EE 2
cp_member_login
Currently used in more than 10 add-ons.
EE 1
EE 2
cp_member_logout
Currently used in 3 add-ons.
EE 1
EE 2
cp_menu_array
Currently used in 6 add-ons.
EE 1
EE 2
create_captcha_start
Currently used in 9 add-ons.
EE 1
EE 2
delete_comment_additional
Currently used in 2 add-ons.
EE 1
EE 2
delete_entries_end
Currently used in 3 add-ons.
EE 1
EE 2
delete_entries_loop
Currently used in more than 10 add-ons.
EE 1
EE 2
delete_entries_start
Currently used in 8 add-ons.
EE 1
EE 2
delete_referrers_blacklist
Not currently used.
EE 1
EE 2
delete_referrers_end
Not currently used.
EE 1
EE 2
delete_referrers_start
Not currently used.
EE 1
EE 2
edit_comment_form_start
Not currently used.
EE 1
EE 2
edit_entries_additional_celldata
Currently used in more than 10 add-ons.
EE 1
EE 2
edit_entries_additional_tableheader
Currently used in more than 10 add-ons.
