Model Context Protocol (MCP) server for freee API integration
Car Loan Interest Deduction Calculator is installed from its publisher's own source and answers where it runs, so this marketplace is not in the path of a single call. There is no address here to send one to, and a panel that pretended otherwise would be showing you an answer we made up. Install it and call it from your own client — the Installation tab has the entry for each one.
What it does
2025-2028 car loan interest deduction, SALT cap, child tax credit and 2026 tax brackets (IRS).
Quickstart
# 1 — add it to Claude Code
claude mcp add --scope user --transport http car-loan-interest-deduction-calculator-mcp https://car-loan-interest-deduction-calculator-mcp.lipmichal.workers.dev/mcp
# 2 — ask your agent for something these tools do
# calculate_car_loan_interest_deduction, calculate_salt_deduction, get_tax_brackets_and_standard_deduction and 1 more
Car Loan Interest Deduction Calculator costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.
Collected from a public index. Nobody has claimed this account, so nothing here was written by its author — claim it if it is yours.
Where are you running it?
Every route below installs the same thing and ends at the same approval screen. Nothing here runs on your machine and nothing runs on ours: this server answers at its publisher’s own address, and what you install is the connection straight to it.
This is a public server: it answers at its publisher’s own address and this marketplace is not in the path. Claude Code registers it in one command; --scope user makes it available in every project. The transport below is http, as the publisher's own manifest declares it.
claude mcp add --scope user --transport http car-loan-interest-deduction-calculator-mcp https://car-loan-interest-deduction-calculator-mcp.lipmichal.workers.dev/mcpReconnect, or start a new session, and the tools appear in the model’s tool list.
One config entry pointing straight at the publisher’s own address — this marketplace is not in the path, and nothing from this listing executes on your machine.
4 tools, with what each one reads, writes and reaches shown before you agree — the same list on every route above. Read the tool surface.
Tool surface
What the model actually sees. Descriptions are diffed on every release — see version history.
Calculates the 2025-2028 federal deduction for car loan interest created by the One Big Beautiful Bill Act (P.L. 119-21, IRC 163(h)(4)) the way IRS Schedule 1-A Part IV does: up to $10,000 of qualified passenger vehicle loan interest, then $200 off for each $1,000 or part of $1,000 of MAGI over $100,000 ($200,000 married filing jointly), so it reaches $0 at $149,001 ($249,001 joint). Checks the el
| Parameter | Type | Required | Notes |
|---|---|---|---|
| filing_status | string | yes | Federal filing status. |
| magi | number | yes | Modified adjusted gross income in USD (Form 1040 line 11b plus excluded foreign and Puerto Rico income). |
| tax_year | integer | yes | Tax year, 2025 to 2028. The deduction ends after 2028. |
| interest_paid | number | yes | Interest paid or accrued on the vehicle loan in the year, in USD (the lender's year-end statement). |
| interest_deducted_elsewhere | number | no | Part of that interest already deducted on Schedule C, E or F. It cannot be deducted twice. |
| loan_origination_date | string | no | Date the loan was originated, YYYY-MM-DD. Must be after 2024-12-31. |
| new_vehicle | boolean | no | True if the original use starts with you (new). Used vehicles do not qualify. |
| us_final_assembly | boolean | no | True if final assembly was in the United States (vehicle label or NHTSA VIN decoder). |
| personal_use | boolean | no | True if you expect personal use more than 50% of the time. |
| vehicle_type | string | no | car, minivan, van, suv, pickup, motorcycle or other. |
| gvwr_under_14000_lbs | boolean | no | True if the gross vehicle weight rating is under 14,000 pounds. |
| secured_by_first_lien | boolean | no | True if the loan is secured by a first lien on the vehicle. |
| is_lease | boolean | no | True if this is a lease. Lease payments never qualify. |
| marginal_tax_rate | number | no | Your federal marginal rate as a decimal (e.g. 0.22) to estimate the tax saved. |
Calculates the deductible state and local tax (SALT) on Schedule A under the One Big Beautiful Bill Act cap (IRC 164(b)(6)-(7)): $40,000 for 2025 and $40,400 for 2026 ($20,000 / $20,200 married filing separately), rising 1% a year through 2029, reduced by 30% of MAGI over $500,000 (2025) or $505,000 (2026) but never below $10,000, then back to a flat $10,000 in 2030. Uses the IRS State and Local T
| Parameter | Type | Required | Notes |
|---|---|---|---|
| filing_status | string | yes | Federal filing status. |
| magi | number | yes | Modified adjusted gross income in USD (Form 1040 line 11b plus excluded foreign and Puerto Rico income). |
| tax_year | integer | yes | Tax year, 2025 or later. 2027-2029 amounts are the statutory 101% steps; 2030 on is $10,000. |
| state_and_local_taxes | number | yes | State and local income (or sales) tax plus real estate and personal property tax paid in the year (Schedule A line 5d). |
| other_itemized_deductions | number | no | Other itemized deductions (mortgage interest, gifts to charity, medical over the floor). Give it to compare itemizing with the standard deduction. |
Returns the official 2025 and 2026 federal income tax brackets and standard deductions after the One Big Beautiful Bill Act: 2026 standard deduction $16,100 single, $32,200 joint, $24,150 head of household (Rev. Proc. 2025-32), 2025 $15,750 / $31,500 / $23,625, plus the additional amount for age 65 or blind. Optionally computes the tax and marginal rate on a taxable income. Says plainly that 2027
| Parameter | Type | Required | Notes |
|---|---|---|---|
| tax_year | integer | yes | 2025 or 2026. 2027 returns a not-yet-published error. |
| filing_status | string | no | Leave out to get all filing statuses. |
| taxable_income | number | no | Taxable income to compute tax on (needs filing_status). |
Calculates the child tax credit as Schedule 8812 does after the One Big Beautiful Bill Act: $2,200 per qualifying child under 17 for 2025 and 2026, $500 per other dependent, reduced by 5% of MAGI over $400,000 joint / $200,000 others (excess rounded up to the next $1,000), limited by tax liability, with the refundable additional child tax credit of up to $1,700 per child at 15% of earned income ov
| Parameter | Type | Required | Notes |
|---|---|---|---|
| filing_status | string | yes | Federal filing status. |
| magi | number | yes | Modified adjusted gross income in USD (Form 1040 line 11b plus excluded foreign and Puerto Rico income). |
| tax_year | integer | yes | 2025 or 2026. 2027 is not yet published. |
| qualifying_children | integer | yes | Children under 17 at year end with a valid SSN. |
| other_dependents | integer | no | Other dependents (credit for other dependents, $500 each). |
| earned_income | number | no | Earned income for the refundable part. Defaults to MAGI. |
| tax_liability_before_credits | number | no | Income tax before credits (Form 1040 line 18). Estimated from MAGI if left out. |
- Every tool — any call limit is its publisher’s, not ours
- No card, and mcprush charges nothing for it
- Runs at its publisher’s own address — this marketplace is not in the path
- Nothing to cap, because mcprush bills nothing
What counts against your monthly calls
| Tool | Unit | Calls used | Out of the allowance |
|---|
Nothing here is billable: mcprush charges nothing to install Car Loan Interest Deduction Calculator or to call it, at any volume.
Two independent axes, because powerful and malicious are different questions. The grade is threat only. The capability level is blast radius, and it is never a penalty on the grade — it is priced as one subtract-only term in the score, where you can see it.
| Term | Level | What it prices | Points |
|---|---|---|---|
| capability-exposure | minimal | capability blast radius (minimal) — client exposure if the model is manipulated | −0 |
| coverage-honesty | manifest | inspection depth (manifest) — how much of the target the scan could see | −4 |
What the scan could actually read
A grade is only as meaningful as its coverage, so the scanner publishes its own depth before it publishes its result.
The scan read each tool’s name, description, input schema and annotations exactly as the server listed them the last time it answered us; no code was reviewed. We ask the server again about once a month, and a list that changed is graded again.
The implementation source was not read — this reflects the declared tool metadata only.
Capability — what it could do if the model were manipulated
Tags derived from each tool’s schema and the implementation, not from what the tool calls itself. minimal is the level these add up to.
| Tool | Capability tags | Why the tag was assigned |
|---|---|---|
| calculate_car_loan_interest_deduction | no tags | |
| calculate_salt_deduction | no tags | |
| get_tax_brackets_and_standard_deduction | no tags | |
| calculate_child_tax_credit | no tags |
Toxic-flow graph
The lethal trifecta, checked as a graph rather than as a checklist: untrusted input, a sensitive source and an external sink have to meet before there is a path worth worrying about.
The public result for this release does not print the flow graph, so there is nothing to show here. That is not the same as "no paths were found": what the scan did read is above, under coverage.
Supply chain and provenance
This is the first scan of this surface here, so there is nothing yet to compare it against.
Every result on this tab comes from one deterministic pass over the published package — offline, rule by rule, and auditable line by line above. Same methodology version, same bytes, same score.
Release history
This is an address its publisher runs: which release it serves is theirs to choose, so there is nothing here to pin. The history below is for reading; the current release on file is 1.0.0.
No release note was published with this version.
One review per account, from a signed-in account that does not publish this listing. Nothing else is asked — you can say what you think before you install it. Publishers can reply once per review, and a review can be edited or deleted by whoever wrote it.
Any signed-in account that does not publish Car Loan Interest Deduction Calculator can review it, once — before installing it or after. A review from an account that has installed it is marked as one.
Nobody has reviewed this listing. The rating on the card is the mean of the reviews written here and nothing else, so there is no rating until somebody writes the first — which takes a signed-in account that does not publish it, and nothing else.