Coverage
A keyword with X enabled polls a search query on your interval and keeps every tweet that matches. The query is X search syntax, so the same operators you would use in the app narrow a search:from:handle, -filter:replies, "exact phrase", lang:fr.
A search can carry several terms at once, OR’d into one upstream request at one tick’s cost. See Keywords.
What an event carries
Each match is delivered as atweet.created event with the full tweet: text, metrics, the author, and the media and links it carried. webhookUrl is optional: without it the keyword still records every match, readable through GET /v1/keywords/{id}/events in the same shape. See Webhooks.
Verification fields
Author objects expose two separate flags:verified— legacy checkmark (government/brand/org verification before X Premium)isBlueVerified— X Premium / Blue subscription badge