Book and query content
ShelfLayer searches public-domain source material. Your prompts and tool arguments may appear in operational logs when your MCP host calls the server. Avoid sending private, confidential, or regulated data to the public beta.
Public beta privacy notice
Privacy policy.
ShelfLayer is a read-only MCP server for querying public-domain books. This page explains what account, usage, and diagnostic data is handled during the public beta.
Short version
ShelfLayer does not sell personal data. The MCP tools are read-only. We use Google sign-in through Clerk to protect the service, and we keep operational logs to secure, debug, and improve the beta.
Data we process
- Account data from Google sign-in, such as email address, name, and account identifier.
- MCP connection metadata, such as OAuth client details, timestamps, and requested scopes.
- Tool usage logs, such as tool names, query parameters, status codes, and error messages.
- Technical logs needed for security, debugging, abuse prevention, and reliability.
Service providers
ShelfLayer uses infrastructure and authentication providers to operate the service. Google is used for sign-in, Clerk handles authentication, and hosting/logging providers process server traffic needed to run the MCP endpoint.
Retention
Operational logs are retained only as long as needed for security, debugging, abuse prevention, and product improvement. Beta retention windows may change as the service matures.
Your choices
You can disconnect ShelfLayer from your MCP host at any time. To ask for account deletion or privacy help, email hello@shelflayer.com from the account address you used to sign in.
Contact
Questions about this policy can be sent to hello@shelflayer.com. Last updated: May 31, 2026.