Subprocessors and infrastructure
Browser and local MCP analysis keep files on your device. No current Crosstabs service stores respondent files. This is a plain-language dependency list, not a negotiated legal schedule or compliance certification.
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Delivery and processing infrastructure
- Vercel delivers the public website, static assets, and public aggregate statistical API. Browser-local analysis does not send its respondent files to the website host.
- Vercel Web Analytics and Speed Insights provide coarse website usage and performance signals. See the privacy page for event fields and exclusions; these signals do not establish individual users or human-versus-agent identity.
- Render ran the optional hosted MCP service and its dedicated PostgreSQL database in Singapore until the service was discontinued on 2026-10-28. It no longer receives uploads, so Render is not an active subprocessor for new data. Data stored before then, including infrastructure backups, remains subject to Render's separate provider retention.
- GitHub hosts source and deployment inputs. npm and PyPI distribute software dependencies and the local MCP package; package installation does not itself upload a browser dataset.
Boundaries and user-selected services
- No customer account, profile, organization, payment, CRM, or support-ticket database is configured.
- Browser projects and local MCP data are not synchronized to any Crosstabs server.
- Warehouse connections (Google BigQuery, Snowflake, Databricks, MotherDuck, Supabase) are services you select and authorize. Your browser talks to them directly with your own credentials; they are not Crosstabs subprocessors, and Crosstabs receives no credentials, queries or rows through them.
- The deterministic Crosstabs engine does not run a hosted generative model. A user-selected AI client or provider may receive tool inputs and outputs under its own policies and configuration.