https://mcp.agentcard.sh/mcp with the user’s connection token (or a buy_token for org-owned accounts).
Behavior: read-only, idempotent.
What it does
Check the status of a hosted merchant login started with buy_connect. Returns linking (still in progress — call again in a few seconds), linked (success — the merchant is ready to shop), expired, or error. Pass the merchant and the pending_id from buy_connect. ONLY for logins started by the buy_connect tool: a login link handed out by the conversationalbuy tool has no pending_id — for those, reply to the same buy conversation (“done — I logged in”) instead of calling this.