BILL Spend and Expense (BYOK) — Privacy Policy

Effective 16 October 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.

What BILL Spend and Expense (BYOK) is. BILL Spend and Expense (BYOK) is a connector (an MCP server and REST API) that an AI assistant calls on your behalf to read your own BILL Spend and Expense data: Read your BILL Spend & Expense budgets, card transactions, reimbursements and users with your own Spend & Expense API token. You bring your own BILL Spend and Expense Spend & Expense API token; the assistant sends it to us with each request.

BYOK key. The key you supply is used to make the one BILL Spend and Expense call you asked for. Our application does not store it, write it to a log, put it in a cache, or share it. It is sent only to gateway.prod.bill.com, over https, and is removed from any text we return to you or your assistant. We do not follow redirects with your key. If BILL Spend and Expense rejects it, we say so without repeating it.

What we receive. The arguments of each tool call, the BYOK key (for that call only), the technical headers needed to serve the request (an IP address or a client identifier supplied by the assistant) and standard server logs. What BILL Spend and Expense receives. The request we make on your behalf, including the key and the arguments, under BILL Spend and Expense's own terms and privacy policy (https://developer.bill.com/docs/bill-developer-terms). BILL Spend and Expense acts at your direction and is the only recipient of the data of your request besides our hosting provider.

What we return. The answer BILL Spend and Expense gives for your request, trimmed to the fields the tool documents. We do not keep it: it is returned to your assistant and not stored, cached or used to train anything.

What we do not do. We do not build a profile, sell or share personal information, or keep your BILL Spend and Expense data. Rate-limit counters (a client identifier and timestamps) are held in memory for at most 24 hours. Hosting access logs (IP addresses, request paths and status codes) are kept for up to 30 days for security and abuse prevention; our application adds no request headers or bodies to them.

Sub-processors. BILL Spend and Expense (the API you call with a BYOK key, at your direction). Hosting: Vercel (United States regions).

Your rights. Because we store no personal data beyond short-lived logs, requests to access, correct or delete data are usually satisfied automatically; you can still contact agent@connectorbay.com and we will respond within 30 days. Revoke your key at BILL Spend and Expense at any time to end all access.

Children. BILL Spend and Expense (BYOK) is a general-audience service operated by the adult using the assistant, under BILL Spend and Expense's own age rules.

Changes. We will post changes here with a new effective date.