Mortgage Tools by Jenny

mortgage.jennyPublished by jenny.mortgageOfficial publisherv1.0.0Updated Oct 24, 2026

Canadian mortgage calculators: renewal offers, extra payments, break-or-stay, debt consolidation.

VerifiedStreamable HTTPWeb executableFinance

Overview

AI-generated overview

Canadian mortgage calculators that let an assistant compare renewal offers, prepayments, break-or-stay and debt consolidation scenarios.

What you can do
  • Check which figures are missing and get questions to ask before a comparison
  • Compare two or three renewal or switch offers on a common basis
  • Model extra payments and lump sums against prepayment limits
  • Compare breaking a term early against staying, including a quoted penalty
  • Compare debt consolidation scenarios over a common horizon
  • Return guidance on supported Canadian mortgage topics and the calculation method
When to use it
Useful when a user is weighing Canadian mortgage decisions — renewing, switching lenders, paying extra, breaking a term early or consolidating other debts — and wants the options compared from figures they supply.
Requirements
A remote endpoint at mcp.jenny.mortgage over streamable HTTP; no packages, environment variables or headers are declared, and no authentication is declared. The user must supply the mortgage figures, such as balance, rate, remaining amortization and any penalty.
Before you install
Results are modeled comparisons based on user-supplied figures, not lender quotes or advice; a lender-quoted penalty and prepayment limits are inputs the user must provide. No credentials are requested, but mortgage figures are sent to a third-party service.

Installation

In SourceWeft

  1. Open Mortgage Tools by Jenny in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/mortgage.jenny%2Fjenny-mortgage-tools/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "mortgage-tools-by-jenny": {
      "type": "http",
      "url": "https://mcp.jenny.mortgage/mcp"
    }
  }
}

Tools

6

diagnose_mortgage_comparison

Check missing Canadian mortgage facts

Use this first when a user wants a Canadian mortgage renewal, extra-payment, break-or-stay or debt-consolidation comparison but has not yet given the key figures. From the facts already supplied, returns the missing ones in priority order and up to three questions to ask (balance, rate, remaining amortization, term, switching costs, lender-quoted penalty). Flags a request to borrow additional cash (cash-out refinance) as unsupported. Do not use when the figures are already supplied: call the matching calculator. Does not calculate, rank, check qualification or search rates.

Parameterstaskrequiredfactsrequired

compare_renewal_offers

Compare Canadian mortgage renewal offers

Use this when a user has two or three Canadian mortgage offers for the same balance, such as a renewal letter from the current lender and a quote to switch lender at renewal, and wants them compared. Compares the user-supplied rates, terms, amortizations, cashback and switching costs over a common horizon. Returns payments, interest, debt left, modeled borrowing cost and missing facts. Do not use for leaving a mortgage before the term ends (use compare_break_or_stay). Does not search or predict rates, confirm qualification or recommend a lender. An unknown cost is never treated as zero.

ParametersoffersrequiredhorizonMonthscurrentPaymentscheduleWindowstartingBalancerequired

plan_mortgage_prepayments

Model extra payments on a Canadian mortgage

Use this when a user asks what paying extra on one Canadian mortgage would do: a higher regular payment, recurring extra payments, or up to 50 lump sums. Compares the supplied mortgage with and without the extras: interest, debt left and modeled payoff period. Checks the extras against prepayment-privilege limits only when the user supplies them; otherwise reports the limits as not checked. Do not use to find a prepayment penalty or the cost of breaking a mortgage: no tool calculates a penalty, the lender quotes it. Results beyond the term need explicit monthly continuation assumptions.

ParameterseventsrequiredmortgagerequiredstartDatedatedEventscontractCapshorizonMonthsrecurringExtrascheduleWindowstartingBalancerequiredsemiMonthlyAnchorspastPaymentsIncludedInBalance

compare_break_or_stay

Compare breaking or keeping a Canadian mortgage

Use this when a user is partway through a Canadian mortgage term and asks whether to break the mortgage early (to refinance the same debt, switch lender or take a lower rate) or stay until the term ends. Compares keeping it with a user-supplied replacement offer, counting the lender-quoted penalty, such as an interest rate differential (IRD) or three months' interest. Shows cashflow payback separately from borrowing-cost crossover. Do not use to calculate or estimate a penalty: the lender must quote it, and an unknown penalty prevents an unconditional ranking. No cash-out or rate search.

ParameterspenaltyrequiredhorizonMonthspenaltyFundingrequiredscheduleWindowcurrentMortgagerequiredpenaltyQuotedAtstartingBalancerequiredreplacementOfferrequiredpenaltySensitivityremainingTermMonthsrequired

compare_debt_consolidation

Compare debt consolidation into a Canadian mortgage

Use this when a user asks about rolling other debts into a Canadian mortgage (debt consolidation), for example credit-card, car-loan or existing line-of-credit or HELOC balances, each entered with a fixed monthly payment or as interest-only. Compares three scenarios over a common horizon: keep the mortgage and debts, consolidate at the new minimum payment, and consolidate while keeping the same monthly repayment budget. Shows interest, debt left, fees and limits. Monthly mortgage payments only; 1 to 10 debts. Do not use for a new HELOC, additional cash-out or qualification: none is modeled.

ParametersdebtsrequiredpenaltyrequiredmortgagerequiredcontractCapshorizonMonthsmonthlyBudgetpropertyValuepenaltyFundingrequiredscheduleWindowstartingBalancerequiredreplacementOfferrequired

get_mortgage_guide

Read an Ontario mortgage preparation guide

Use this when a user asks how to prepare for or understand a supported Canadian mortgage topic and is not asking for a calculation: renewal, switching costs, unequal terms, payment versus cost, renewal checklist, prepayments, break or stay, debt consolidation, or the calculation method. Returns one short, dated preparation guide written for Ontario and reviewed by an Ontario mortgage agent, with its public source, review status and follow-up questions. Do not use for general financial, legal or tax advice, current rates, arbitrary URLs or live web search.

Parameterstopicrequireddetailrequired

Version history

1
  1. v1.0.0LatestOct 14, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.