Fidelius Help
Fidelius keeps your API keys, tokens and other developer secrets, grouped by project. They are stored in your iCloud Keychain, so they reach every Mac signed in to your iCloud account, and Fidelius asks for Touch ID before it shows or copies a value.
The accio command runs another command with a project's secrets as environment variables. You type accio my-app npm run dev and the dev server gets its keys. With Fidelius Free your keys live in shared, so that's accio shared npm run dev. AI agents use secrets the same way, without ever reading them.