Whether HomeRunner needs Stripe keys depends on how each of your Guesty properties takes payment.
Guesty Pay. If your properties are on Guesty Pay, no additional keys are needed.
Stripe. For any property that charges through Stripe, HomeRunner needs the Stripe publishable key only. The secret key is not required. Guesty does not expose the publishable key through its API, so you add it once manually. This lets the hosted payment fields load at checkout. You can enter the publishable key yourself in your HomeRunner dashboard under PMS Connections.
How card data is handled. Cards are tokenized directly in the guest’s browser, and the token is sent to Guesty. HomeRunner never handles raw card data.