sēta is a private, personal assistant system run by one household. It is not a public service and not a crawler.
Leslie is the household's lifestyle agent: wine, dining, events and weekends. Leslie visits a site only when the household asks it to do something there, such as checking an order, a price or stock at the nearest store for a wine they want. It does not crawl, index, train on or resell anything it reads, and it does not scrape competitors' prices.
Leslie names itself in every request, with the user agent
seta-leslie/1.0 (personal cellar assistant; automated browser),
and signs its requests to sites it uses with an Ed25519 key, under Web Bot
Auth (RFC 9421). Its public keys are listed at
/.well-known/http-message-signatures-directory.
It keeps request rates low, signs in only to the household's own accounts, and stops at any block or challenge rather than working round it.