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Sub-processors

Effective 17 October 2026. Last updated 17 October 2026.

In short

  • These are the companies that process personal data on our behalf to run BlackSlate.
  • Account data and your work are stored in London. We update this page before adding a new provider.

The summary is for convenience; the full text below is what applies.

ProviderWhat it does for usLocation
SupabaseDatabase, authentication, file storage and server functions for the appsUnited Kingdom (AWS, London)
VercelHosting and delivery of the website and apps, and the website's waitlist formGlobal network; company based in the United States
AnthropicAI analysis of scripts and text, script reports, draft comparisons, research summaries, and the web search behind casting suggestionsUnited States
ResendSending email, such as account emails, Preview Links and the waitlist confirmationUnited States
StripePayment processing and subscription billingUnited States and other locations

Where a provider processes personal data outside the UK, we rely on UK adequacy regulations or the UK International Data Transfer Agreement or Addendum. See our Privacy Policy and Data Processing Addendum.