Filter by character age

i need a tool that filters a list of character name by age
the filtered list can be dragged and dropped in to the client

Not sure there is an ESI endpoint that will allow that to happen

/characters/{character_id}/corporationhistory/

That’s what you would want to use yes. But to @Geo_Eclipse_Oksaras’ point, there is not a singular endpoint where you can feed it character names and it returns a sorted list. You’d need to convert the names to their IDs (most likely via /universe/ids/), then hitup the corporation history endpoint for each character, calculate their birthday, then sort your original list.