Most agents stop at "here's a link." With Harbor, yours can buy it, within limits the user set, and follow it to the door.
A chat or voice assistant that researches, compares live prices across stores, and buys the one the user picks, in their own account.
Find me the women's Allbirds Dashers in navy.
Women's Dasher NZ, Blizzard/Deep Navy, is $140 at Allbirds, in stock. Want me to order it?
Yes.
Ordered. Allbirds order 1041, arriving Thursday.
Apps that know what a home uses and reorder on schedule, under a monthly budget the user controls, at the store where they already have an account.
Birthday and holiday agents that pick something thoughtful, ship it to the recipient's address, and let the user approve anything over their budget.
Office and ops agents that restock supplies from approved stores, with per-person limits and a person in the loop for anything big.
Agents that watch a product and buy when it hits the user's price or comes back in stock, with a fresh offer checked against their limits every time.