Autumn Payments

Always consult docs.useautumn.com for code examples and latest API.

Autumn handles Stripe checkout, upgrades, downgrades, and cancellations automatically.

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Quick Reference

Payment Flow

1. checkout - Returns Stripe URL (new) or preview data (returning customer)
2. attach - Confirms purchase when card already on file

Checkout Result

Field	Description
url	Stripe checkout URL (null if card on file)
product	Target product with scenario
current_product	Customer's current product
lines	Invoice line items
total	Amount in major currency units
currency	Currency code

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Product Scenarios

Scenario	Meaning	Action
new	Not subscribed	Subscribe
active	Current plan	Current Plan
scheduled	Scheduled	Already Scheduled
upgrade	Higher tier	Upgrade
downgrade	Lower tier	Downgrade
renew	Cancelled	Renew

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React Implementation

import { useCustomer, usePricingTable } from "autumn-js/react";

const { checkout, attach } = useCustomer();
const { products } = usePricingTable();

// Checkout flow
const data = await checkout({ productId: "pro" });
if (data.url) {
  window.location.href = data.url;  // New customer
} else {
  // Show confirmation dialog, then:
  await attach({ productId: "pro" });
}

// Cancel
const { cancel } = useCustomer();
await cancel({ productId: "pro" });
// Or downgrade to free:
await attach({ productId: "free" });

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Backend Implementation

import { Autumn } from "autumn-js";

const autumn = new Autumn({ secretKey: process.env.AUTUMN_SECRET_KEY });

// Checkout
const { data } = await autumn.checkout({ customer_id, product_id: "pro" });
if (data.url) return redirect(data.url);

// Attach (after user confirms)
await autumn.attach({ customer_id, product_id: "pro" });

// Get products with scenarios
const { data: productsData } = await autumn.products.list({ customer_id });

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Prepaid Pricing

For seat-based or prepaid products, pass quantities:

await autumn.checkout({
  customer_id,
  product_id: "credits_pack",
  options: [{ feature_id: "credits", quantity: 500 }],
});

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Button Text Pattern

function getButtonText(product: Product): string {
  const { scenario, properties } = product;
  if (properties?.has_trial) return "Start Trial";
  if (scenario === "active") return "Current Plan";
  
  const text = { upgrade: "Upgrade", downgrade: "Downgrade", new: "Subscribe" };
  return text[scenario] ?? "Enable";
}

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Common Gotchas

1. URL field - It's data.url, not data.checkout_url
2. Don't build custom logic - Use products.list for scenarios
3. Proration automatic - Autumn handles upgrade/downgrade proration
4. Cancel via free - Prefer attaching free plan over hard cancel
5. Success URL - Pass success_url to redirect after Stripe checkout

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Resources

• Checkout Docs
• Attach Docs
• LLMs.txt