US mortgage calculator and amortization API with 50-state property tax, PMI, and affordability data. Connect the official US Mortgage Calculator MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http us-mortgage-calculator https://www.usmortgagecalc.com/mcpRun in your terminal, then restart Claude Code.
US Mortgage Calculator · https://www.usmortgagecalc.com/mcp
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “calculate_mortgage”: Full monthly housing cost for a US mortgage: principal and interest, property tax, homeowners insurance, mortgage insurance and HOA dues, pl.”
“Use “calculate_amortization”: Payment-by-payment breakdown of how a loan is repaid, showing the split between principal and interest and the falling balance. Use granular.”
“Use “calculate_pmi”: Mortgage insurance for any US loan programme, including the upfront charges most calculators omit. Conventional: monthly PMI and the month i.”
“Use “calculate_property_tax”: Annual and monthly property tax for a home, using a state's average effective rate. Also returns how that state ranks nationally and how its.”
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how US Mortgage Calculator holds up.
Operated by US Mortgage Calculator (usmortgagecalc.com) at its documented MCP endpoint — not a third-party mirror or community re-host.
This server only exposes public data — no account and no credentials are involved when you connect.
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
If US Mortgage Calculator adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Choose US Mortgage Calculator in the gate directory. No sign-in needed.
US Mortgage Calculator's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
calculate_mortgage — Full monthly housing cost for a US mortgage: principal and interest, property tax, homeowners insurance, mortgage insurance and HOA dues, pl
calculate_amortization — Payment-by-payment breakdown of how a loan is repaid, showing the split between principal and interest and the falling balance. Use granular
calculate_pmi — Mortgage insurance for any US loan programme, including the upfront charges most calculators omit. Conventional: monthly PMI and the month i
calculate_property_tax — Annual and monthly property tax for a home, using a state's average effective rate. Also returns how that state ranks nationally and how its
calculate_affordability — Maximum affordable home price from income, existing debt payments and available down payment, using the 28/36 qualifying ratios. Reports whi
calculate_refinance — Whether refinancing is worth it: the new payment, monthly saving, and how many months it takes to recover closing costs. Also compares lifet
estimate_closing_costs — Line-by-line buyer closing costs — lender fees, title, appraisal, transfer taxes, prepaid escrow — plus total cash needed at the table inclu
calculate_rent_vs_buy — Compares renting and buying on net wealth rather than on monthly payment, accounting for equity, appreciation, maintenance, selling costs, a
+ 3 more tools once connected
https://www.usmortgagecalc.com/mcpYes — US Mortgage Calculator operates its own remote MCP server at www.usmortgagecalc.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
Add gate's gateway URL to your AI client once, then pick US Mortgage Calculator in the directory. No account or sign-in is needed. From then on, US Mortgage Calculator's tools are available in every client you've connected to gate.
No. US Mortgage Calculator runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Yes — you can get started with gate for free and connect US Mortgage Calculator in minutes. No credit card required.
Every server below works through the same gateway URL — connect once, add tools anytime.
Set up US Mortgage Calculator in: Claude · Claude Code · ChatGPT · Cursor · VS Code
One URL. All MCPs. Full control. Free to start.
Get started free