Agent Card Provisioning

Provision virtual payment cards for AI agents with built-in spending controls.

How It Works

1. Agent requests card via payment intent
2. Policy evaluates the request (amount, merchant, limits)
3. Card issued if within policy OR approval required if over threshold
4. Agent uses card for the specific purchase
5. Transaction tracked and matched to intent

Creating a Card (Intent-Based)

Cards are provisioned through payment intents, not created directly:

proxy.intents.create
├── merchant: "Amazon"
├── amount: 49.99
├── description: "Office supplies"
└── category: "office_supplies" (optional)

If approved (auto or manual), a card is issued:

Response:
├── id: "int_abc123"
├── status: "pending" or "card_issued"
├── cardId: "card_xyz789"
└── message: "Card issued successfully"

Getting Card Details

Masked (for display)

proxy.cards.get { cardId: "card_xyz789" }
→ { last4: "4242", brand: "Visa", status: "active" }

Full Details (for payment)

proxy.cards.get_sensitive { cardId: "card_xyz789" }
→ {
    pan: "4532015112830366",
    cvv: "847",
    expiryMonth: "03",
    expiryYear: "2027",
    billingAddress: {
      line1: "123 Main St",
      city: "New York",
      state: "NY",
      postalCode: "10001",
      country: "US"
    }
  }

Card Controls (via Policy)

Policies define what cards can be used for:

Control	Description
Spending limit	Max per transaction
Daily/monthly limits	Cumulative caps
Merchant categories	Allowed/blocked MCCs
Auto-approve threshold	Below = instant, above = human approval
Expiration	Card validity period

Card Lifecycle

Intent Created
      │
      ▼
┌─────────────┐
│   Policy    │
│  Evaluation │
└──────┬──────┘
       │
  ┌────┴────┐
  ▼         ▼
Auto     Needs
Approve  Approval
  │         │
  ▼         ▼
Card     [Human]
Issued      │
  │         │
  ◀─────────┘
  │
  ▼
Card Used
  │
  ▼
Transaction
 Matched
  │
  ▼
Card
Expired

Best Practices

1. One intent per purchase - Creates audit trail
2. Descriptive intent names - Helps reconciliation
3. Set reasonable policies - Balance autonomy vs control
4. Monitor transactions - Use proxy.transactions.list_for_card

Security

• Cards are single-purpose (one intent = one card)
• Unused cards auto-expire
• Full PAN only via get_sensitive (requires auth)
• All transactions logged and reconciled