Arc & Ledger Tax Tools - MCP Server Privacy Policy
Last updated: July 3, 2026
This policy covers the Arc & Ledger Tax Tools remote MCP server at https://mcp.arcandledger.com/mcp, which exposes our free tax calculators and intake tools inside AI assistants such as Claude and ChatGPT. The server is public, requires no authentication or account, and is read-only. It creates no practitioner-client relationship and stores no tax returns, documents, or client records.
1. What data we collect
When your AI assistant calls one of our tools, it sends the specific inputs needed for that calculation (for example a notice code, a filing status, or an income figure). These inputs are processed in memory to compute the response and are not stored. We keep only coarse, anonymous operational logs, described below. We do not ask for, receive, or store your name, contact details, Social Security number, or any document.
2. How we use it
Tool inputs are used only to produce the tool's answer during the request and are then discarded. Our anonymous logs are used solely to keep the service running, rate-limit abuse, and understand aggregate demand (which tools are used, how often). We do not use any input to build a profile of you.
3. What we log (and what we never log)
Each request writes one anonymous log line containing the tool name, a timestamp, and coarse enum parameters only (for example a notice code or an entity type). We never log free-text you enter, computed dollar amounts, or any identifying information. Numeric inputs are dropped or reduced to a wide bucket so a real figure can never appear in a log. These logs are retained for 30 days and then deleted.
4. No sharing, no sale
We do not sell your information, and we do not share tool inputs with any third party. The server runs on Cloudflare Workers, which processes requests as our infrastructure provider under its own terms; no advertising, analytics, or data-broker services receive your inputs. If you choose to click a handoff link to book a call or make a payment, that action is governed by the privacy policy of the destination (Cal.com or Stripe) and by our main website privacy policy.
5. Data retention
Tool inputs are not retained beyond the moment they are processed. The anonymous operational logs described above are retained for 30 days and then automatically deleted. We keep no long-term record tied to you.
Children
The service is intended for adults handling their own or their business's US tax questions and is not directed to children under 13.
Changes
If this policy changes, we will update the date above and post the revised version at this URL.
Contact
Questions about this policy or the MCP server can be sent to [email protected]. Arc & Ledger Accounting, 5183 Overland Avenue, Suite B, Culver City, CA 90230.
The tools provide general information, not tax advice, and using them does not create a practitioner-client relationship. Arc & Ledger is a firm led by an Enrolled Agent, enrolled to practice before the IRS; the Enrolled Agent credential is issued by the U.S. Department of the Treasury.