medusa-store/docs/content/troubleshooting/missing-payment-providers.md

Stripe not showing in checkout

You add payment providers to your Medusa instance by adding them as plugins in medusa-config.js:

const plugins = [
  ...
  // You can create a Stripe account via: https://stripe.com
  {
    resolve: `medusa-payment-stripe`,
    options: {
      api_key: STRIPE_API_KEY,
      webhook_secret: STRIPE_WEBHOOK_SECRET,
    },
  },
  ...
];

And installing them through your favourite package manager:

npm install medusa-payment-stripe

Though, to be able to also show them as part of your checkout flow, you need to add them to your regions.

In Medusa Admin go to Settings -> Regions and select your newly added payment provider: