Librarian, Inc. uses the following third-party sub-processors to deliver The Librarian. Each processes customer personal data only as necessary to provide us their service, under contractual data-protection obligations consistent with our Privacy Policy.
| Sub-processor | Purpose | Data processed | Location |
|---|---|---|---|
| Google LLC | Cloud hosting (Google Cloud), Workspace APIs, AI services (incl. Vertex AI) | Service data; content from connected Google Workspace accounts; messages sent to AI features | United States |
| Hetzner Online GmbH | Cloud hosting | Service data (application, database) | United States (Hillsboro, OR) |
| Microsoft Corporation | Cloud hosting (Azure-hosted OpenAI, fallback processing) | Messages and content sent to AI features (in transit during processing; not stored) | United States |
| OpenAI, LLC | AI processing | Messages and content sent to AI features | United States |
| Anthropic, PBC | AI processing | Messages and content sent to AI features | United States |
| Stripe, Inc. | Billing and payment processing | Account, billing, and payment information | United States |
| Twilio, Inc. | SMS, RCS, and email delivery | Message content and recipient contact details | United States |
| Sentry (Functional Software, Inc.) | Error monitoring and crash reporting | Technical/diagnostic data; may incidentally include user identifiers | United States |
| Cloudflare, Inc. | DNS, CDN, WAF, and DDoS protection | Network traffic transiting our services | United States (global edge network) |
We update this page when we add, replace, or remove a sub-processor.
Last updated: July 14, 2026
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