filter.ld.json

// filter:negate:
 // negates the filter it's contained in
// filter:any:
 // true iff, for every predicate in the filter, the object to filter contains at least one of the values OR one of the embedded filters apply
// filter:all:
 // true iff, for every predicate in the filter, the object to filter contains all the values AND all of the embedded filters apply

e.g. all activities by me or my alt

{
  "type": "filter:CollectionFilter",
  "filter:filterOn": { "_": "should contain exactly one filter type",
    "_": "(actor contains https://puckipedia.com OR actor contains https://puckipedia.com/alt)",
    "filter:any": { "actor": ["https://puckipedia.com", "https://puckipedia.com/alt"] },
  }
}

e.g. all announces that are public (type contains Announce and (to contains as:Public OR cc contains as:Public)
{
  "filter:all": {       
    "type": "Announce", 
    "filter:any": [     
      { "to": "as:Public" }, 
      { "cc": "as:Public" } 
    ]
  }
}