list_categories
ActiveTool of HTML Email Playbook
List all rule categories in the Email Playbook with a one-line description and page count. Categories are: structure (head/body container/header/body/footer), compatibility (Outlook MSO, RTL, responsive), production (Gmail clipping, dark mode, preheader, bulletproof buttons), ai-generation (constraints for AI emitters). For reusable components, use list_components instead — they live in a separate dimension and are not returned by get_playbook_rules.
Parameters schema
{
"type": "object",
"properties": {},
"additionalProperties": false
}Parent server
HTML Email Playbook
https://github.com/OsamaHassouna/docs-hub
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