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Security

Connection tokens

Connection tokens are encrypted at rest using AES-256-GCM. The encryption key is configured server-side.

Provider permissions

Permissions vary by provider and connection. Review the permission request shown by the provider before granting access.

Hosting and service providers

  • Excelsius-hosted workspace: stored in Excelsius's database and isolated per business with row-level security.
  • Notion workspace: Notion can be selected as the workspace home.
  • Service providers named in the current implementation: Vercel, Supabase, Stripe, Anthropic, and Google. This is a partial list and may omit other services or details about how they handle data.

Payment processing

Excelsius subscription checkout uses Stripe.

Disclosure

If you discover a security issue with Excelsius, please report it to support@excelsius.co with the subject “Security:” followed by a short description.

Subprocessors

The following service providers are named in the current implementation. This list is partial and may omit other services or details about how they handle data.

  • Vercel — hosting
  • Supabase — application database and authentication
  • Stripe — subscription checkout
  • Anthropic — language model API
  • Google — Calendar and Gmail connections

Contact

Security questions or reports: support@excelsius.co