Each project has its own project keys. A project key can’t call the management API. An organization key can call a project’s endpoints when it names the project in the
Project-Id header (projectId in the SDKs). See Call project endpoints. Both kinds can call Get account details. You manage keys in the dashboard.
Your API keys carry many privileges, so be sure to keep them secure. Don’t share your secret API keys in publicly accessible areas such as GitHub, client-side code, and so forth.
Authentication to the API is performed with the Authorization header when making a HTTP request. Provide your API key prefixed with Bearer as the value of the Authorization header.
We recommend creating two projects in your dashboard, one for development and
one for production. This way you can create tokens for both environments.