Interswitch Card360

Create Card

interface CreateCardRequest {
  customerId: string;
  cardType: 'VIRTUAL' | 'PHYSICAL';
  cardScheme: 'VERVE' | 'VISA' | 'MASTERCARD';
  currency: string;           // e.g., 'NGN'
  accountNumber: string;
  bankCode: string;
  firstName: string;
  lastName: string;
  phoneNumber: string;
  email: string;
  dateOfBirth: string;        // YYYY-MM-DD
  address?: string;
}

interface CardResponse {
  responseCode: string;
  cardId: string;
  pan: string;                // Masked PAN (e.g., 506105****7864)
  expiryDate: string;         // YYMM
  cardType: string;
  cardScheme: string;
  status: string;
  createdAt: string;
}

async function createCard(
  data: CreateCardRequest
): Promise<CardResponse> {
  const headers = await getAuthHeaders();

  const response = await fetch(
    `${process.env.INTERSWITCH_BASE_URL}/api/v1/cards`,
    {
      method: 'POST',
      headers: { ...headers, 'Content-Type': 'application/json' },
      body: JSON.stringify(data),
    }
  );

  return response.json();
}

Get Card Details

async function getCardDetails(
  cardId: string
): Promise<CardResponse> {
  const headers = await getAuthHeaders();

  const response = await fetch(
    `${process.env.INTERSWITCH_BASE_URL}/api/v1/cards/${encodeURIComponent(cardId)}`,
    { method: 'GET', headers }
  );

  return response.json();
}

Check Card Balance

interface CardBalance {
  availableBalance: number;
  ledgerBalance: number;
  currency: string;
}

async function getCardBalance(
  cardId: string
): Promise<CardBalance> {
  const headers = await getAuthHeaders();

  const response = await fetch(
    `${process.env.INTERSWITCH_BASE_URL}/api/v1/cards/${encodeURIComponent(cardId)}/balance`,
    { method: 'GET', headers }
  );

  return response.json();
}

Set / Reset PIN

interface SetPinRequest {
  oldPin?: string;            // Required for PIN change (not initial set)
  newPin: string;             // 4-digit PIN
  confirmPin: string;         // Must match newPin
}

async function setCardPin(
  cardId: string,
  data: SetPinRequest
): Promise<{ responseCode: string; responseDescription: string }> {
  const headers = await getAuthHeaders();

  const response = await fetch(
    `${process.env.INTERSWITCH_BASE_URL}/api/v1/cards/${encodeURIComponent(cardId)}/pin`,
    {
      method: 'PUT',
      headers: { ...headers, 'Content-Type': 'application/json' },
      body: JSON.stringify(data),
    }
  );

  return response.json();
}

Block Card

interface BlockCardRequest {
  reason: string;             // Reason for blocking
  blockType: 'TEMPORARY' | 'PERMANENT';
}

async function blockCard(
  cardId: string,
  data: BlockCardRequest
): Promise<{ responseCode: string; responseDescription: string }> {
  const headers = await getAuthHeaders();

  const response = await fetch(
    `${process.env.INTERSWITCH_BASE_URL}/api/v1/cards/${encodeURIComponent(cardId)}/block`,
    {
      method: 'POST',
      headers: { ...headers, 'Content-Type': 'application/json' },
      body: JSON.stringify(data),
    }
  );

  return response.json();
}

Unblock Card

async function unblockCard(
  cardId: string
): Promise<{ responseCode: string; responseDescription: string }> {
  const headers = await getAuthHeaders();

  const response = await fetch(
    `${process.env.INTERSWITCH_BASE_URL}/api/v1/cards/${encodeURIComponent(cardId)}/unblock`,
    {
      method: 'POST',
      headers,
    }
  );

  return response.json();
}

Complete Card Management Flow

// 1. Issue a virtual card
const card = await createCard({
  customerId: 'CUST_001',
  cardType: 'VIRTUAL',
  cardScheme: 'VERVE',
  currency: 'NGN',
  accountNumber: '0123456789',
  bankCode: '058',
  firstName: 'John',
  lastName: 'Doe',
  phoneNumber: '+2348012345678',
  email: '[email protected]',
  dateOfBirth: '1990-01-15',
});

console.log('Card ID:', card.cardId);
console.log('PAN:', card.pan);

// 2. Set PIN
await setCardPin(card.cardId, {
  newPin: '1234',
  confirmPin: '1234',
});

// 3. Check balance
const balance = await getCardBalance(card.cardId);
console.log('Balance:', balance.availableBalance / 100);

// 4. Block card if compromised
await blockCard(card.cardId, {
  reason: 'Suspected fraud',
  blockType: 'TEMPORARY',
});

// 5. Unblock after investigation
await unblockCard(card.cardId);

// 6. Change PIN
await setCardPin(card.cardId, {
  oldPin: '1234',
  newPin: '5678',
  confirmPin: '5678',
});

Card Statuses

Best Practices

1. Never log full PAN — Only use masked versions
2. PIN handling — Never store or log PINs
3. Block immediately on fraud suspicion
4. Implement PIN retry limits — Lock after 3 failed attempts
5. Use virtual cards for online-only use cases
6. Monitor card status — Set up alerts for status changes