Begin a Plaid connection for one account

Mints the short-lived token Plaid Link opens on. The token reaches no account of its own: the owner signs in at their bank inside Plaid’s own widget and what comes back to the browser is a public token worth one exchange, which /plaid/exchange turns into something that reads. Where the linkability check named the bank, Link opens on it rather than on a search box. connectionId puts the owner back into a bank that needs them instead of adding a second connection, and asks for no new consent. While bank accounts are charged, connecting an account this team does not read yet takes an owner on screen and a plan in trial or active; the price of one past the accounts the plan includes is agreed at /plaid/link. Nothing is connected by calling this. Owners only.