In this section we will get a stripe account setup. Head over to Stripe and sign up for an account, once you're all setup, you will land on the dashboard. We need to get the API Keys, so click on the "Developers" link on the left hand side:

Then click on API Keys:

Then copy the Secret key:

Next up create a .env file in the root of your project and the secret key :

STRIPE_SECRET_KEY = sk_test_stuff

Then in your serverless.yml file add the key in the environment part in the provider block:

provider:
  name: aws
  runtime: nodejs10.x
  stage: dev
  region: us-east-1
  profile: personalAccount
  environment:
    stripeSecretKey: ${env:STRIPE_SECRET_KEY}

This should be enough for us to complete the function now.