Your own Signals page settings: hidden_types and notify_types, sender_profile_scope with sender_profile_sids, toast_enabled, seen_at, saved_views. New for me: then search_activities with type in notify_types minus hidden_types, created_at gt seen_at and occurred_at gt seen_at minus three days (a sender profile leaf only when scope is chosen). Reading never marks the feed seen; a signal is private context, never repeated to the lead.

Contract:

• MCP tool get_signal_preferences, registry package mcp.signals/signal_preferences, mount signals.website.
• Operation get, response envelope get.
• Flags: read only.