Autumn Customer Setup

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

Quick Reference

Environment Variables

• AUTUMN_SECRET_KEY
• Required. Get one at app.useautumn.com

Installation

npm install autumn-js # Node.js pip install autumn-py # Python

Integration Paths

Stack Path

React + Node.js Mount handler + AutumnProvider

Backend only Initialize client + call API

Path A: React + Node.js

Handler Setup

Framework File Import

Next.js App Router app/api/autumn/[...all]/route.ts

autumn-js/next

React Router app/routes/api.autumn.tsx

autumn-js/react-router

Hono Any file autumn-js/hono

Express Any file autumn-js/express

Fastify Any file autumn-js/fastify

import { autumnHandler } from "autumn-js/next";

export const { GET, POST } = autumnHandler({ identify: async (request) => { const session = await getSession(request); return { customerId: session.user.id, // or session.org.id for B2B customerData: { name: session.user.name, email: session.user.email }, }; }, });

Client Setup

import { AutumnProvider } from "autumn-js/react";

<AutumnProvider>{children}</AutumnProvider>

// Different backend URL: <AutumnProvider backendUrl={process.env.NEXT_PUBLIC_API_URL} />

Verify

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

const { customer } = useCustomer(); console.log("Autumn customer:", customer);

Path B: Backend Only

Initialize

import { Autumn } from "autumn-js";

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

from autumn import Autumn

autumn = Autumn('am_sk_test_xxx')

Create Customer

const { data } = await autumn.customers.create({ id: "user_id_from_auth", name: "Test User", email: "test@example.com", });

Common Gotchas

• B2C vs B2B - Decide if customerId is user ID or org ID before integrating

• Idempotent - customers.create returns existing customer if ID exists

• Backend URL - Pass backendUrl to provider if API is on different domain

• Secret key - Keep AUTUMN_SECRET_KEY server-side only

Resources

• Setup Docs

• React Setup

• LLMs.txt