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
Read the rules on a card as a plain summary: spend caps, rates, categories, merchants, places, currencies, time windows, where the card can be used from, and any remembered merchants. A currency rule readsCurrency: USD, EUR, and a preset that watches ends with Mode: watch. A card, app, or account without a preset is unrestricted, and the tool says so.