Effective: 2026-05-15
This privacy policy applies to the Accountant MCP application ("the Application"), a private internal-use tool operated by Tam Nguyen for bookkeeping of businesses owned and operated by Tam Nguyen.
The Application has exactly one user: the developer. It is not made available to other parties, is not listed on the QuickBooks App Store, and does not accept signups. There is no customer base whose data could be shared, sold, or breached.
When the developer authorizes the Application against their own QuickBooks Online company file, the Application receives an OAuth 2.0 refresh token granting read and write access to that company's accounting data (transactions, accounts, vendors, customers, reports).
All cached QuickBooks data lives only on the developer's machine and can be deleted at any time. The developer can revoke the Application's access through the QuickBooks Online "Connected Apps" settings, which invalidates the refresh token immediately.
No data is shared with any party other than QuickBooks (the source) and the developer (the operator). Anthropic's Claude API may receive derived data (e.g., a transaction description being categorized) under Anthropic's data-handling terms; no raw QuickBooks data leaves the developer's environment without explicit invocation.
Client secrets and OAuth tokens are stored only in environment files
on the developer's machine, never in source control. The application
repository excludes these files via .gitignore.
Questions: tam@tamsaicloud.com