When to use GATSBY_

Use GATSBY_ for environmental variables (env vars) you use in your client-side code. In practice, that would be almost all of your code. The exceptions are code inside gatsby-node.js, gatsby-config.js, and a page's getServerData or config.

Exposing all env vars on the client would be a major security hazard. We use env vars for things such as API secrets, etc.

XATA_API_KEY=xau_werIJslsdf8wekfsflr06ZxzyYYVpsMF6
GATSBY_RECAPTCHA_SITE_KEY=6LeIxAcTAAAAAJcZVRqyHh71UMIEGNQ_MXjiZKhI

All the best,
Queen Raae