混合计费模型

Dashboard: Meters → Create Meter
Event Name: "api.call"
Aggregation: Count
This tracks API calls per customer

Dashboard: Create Product → Subscription
Name: "Pro Plan"
Base Price: $49/month

Then attach usage pricing:
- Meter: api.call
- Price per unit: $0.005
- Free threshold: 10,000 (included in subscription)

const session = await client.checkoutSessions.create({
  product_cart: [
    { product_id: 'prod_pro_plan', quantity: 1 }
  ],
  customer: { email: '[email protected]' },
  return_url: 'https://yourapp.com/success'
});

await fetch('https://api.dodopayments.com/events/ingest', {
  method: 'POST',
  headers: {
    'Authorization': `Bearer ${apiKey}`,
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    events: [{
      event_id: `call_${Date.now()}`,
      customer_id: 'cus_123',
      event_name: 'api.call',
      timestamp: new Date().toISOString(),
      metadata: { endpoint: '/v1/generate' }
    }]
  })
});

Dashboard: Products → Add-ons → Create Add-on
Name: "Additional Seat"
Price: $15/month
Description: "Add another team member"

Dashboard: Create Product → Subscription
Name: "Team Plan"
Price: $99/month
Description: "Includes 3 team members"

Then in Add-ons section:
- Attach: "Additional Seat" add-on

const session = await client.checkoutSessions.create({
  product_cart: [{
    product_id: 'prod_team_plan',
    quantity: 1,
    addons: [{
      addon_id: 'addon_seat',
      quantity: 9  // 9 extra seats (12 total with 3 included)
    }]
  }],
  customer: { email: '[email protected]' },
  return_url: 'https://yourapp.com/success'
});

// Add 5 more seats
await client.subscriptions.changePlan('sub_123', {
  product_id: 'prod_team_plan',
  quantity: 1,
  proration_billing_mode: 'prorated_immediately',
  addons: [{
    addon_id: 'addon_seat',
    quantity: 14  // New total: 14 extra seats
  }]
});

# Add-on 1: Advanced Analytics
Dashboard: Products → Add-ons → Create Add-on
Name: "Advanced Analytics"
Price: $19/month

# Add-on 2: API Access
Name: "API Access"
Price: $9/month

# Add-on 3: Priority Support
Name: "Priority Support"
Price: $29/month

# Add-on 4: White-label
Name: "White-label"
Price: $49/month

Dashboard: Create Product → Subscription
Name: "Core Plan"
Price: $29/month

Then in Add-ons section:
- Attach all feature add-ons

const session = await client.checkoutSessions.create({
  product_cart: [{
    product_id: 'prod_core_plan',
    quantity: 1,
    addons: [
      { addon_id: 'addon_analytics', quantity: 1 },
      { addon_id: 'addon_api_access', quantity: 1 }
      // Customer didn't select support or white-label
    ]
  }],
  return_url: 'https://yourapp.com/success'
});

// Customer wants to add Priority Support
await client.subscriptions.changePlan('sub_123', {
  product_id: 'prod_core_plan',
  quantity: 1,
  proration_billing_mode: 'prorated_immediately',
  addons: [
    { addon_id: 'addon_analytics', quantity: 1 },
    { addon_id: 'addon_api_access', quantity: 1 },
    { addon_id: 'addon_priority_support', quantity: 1 }  // New!
  ]
});

const subscription = await client.subscriptions.create({
  billing: {
    city: 'San Francisco',
    country: 'US',
    state: 'CA',
    street: '123 Main St',
    zipcode: '94105'
  },
  customer: { customer_id: 'cus_123' },
  product_id: 'prod_retainer',
  quantity: 1,
  payment_link: true,
  return_url: 'https://yourapp.com/success',
  on_demand: {
    mandate_only: false,
    product_price: 19900  // $199 initial charge
  }
});

// Charge for 3 hours of consulting
await client.subscriptions.charge('sub_123', {
  product_price: 45000,  // $450.00 (3 × $150)
  product_description: 'Consulting - 3 hours (March 15)'
});

// Charge for emergency support incident
await client.subscriptions.charge('sub_123', {
  product_price: 10000,  // $100.00
  product_description: 'Emergency support - Server outage (March 18)'
});

// Retrieve subscription charges
const payments = await client.payments.list({
  subscription_id: 'sub_123'
});

// Show itemized breakdown to customer
payments.items.forEach(payment => {
  console.log(`${payment.description}: $${payment.amount / 100}`);
});