Estate and Gift Tax Exemption Calculator

io.github.theluckystrike/estate-gift-tax-exemption-calculator-mcptheluckystrikestreamable-httpv1.0.0Scanned 3 hours ago

2026 US estate and gift tax: $15M exemption (P.L. 119-21), 40% rates, annual exclusion, DSUE.

4 tools: 1 do something that can't be undone, 1 change things and 2 only read.

Reads private data · 0
Reads text others write · 0
Can send data out · 1
1 finding

Anlyon alternative

2 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →

Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

4 tools

Can't be undone 1Sends, pays, publishes or merges: once done, it cannot be taken back.Claude Code: ask

check_giftChecks a gift against the federal gift tax rules for a year (2013-2026): annual exclusion per recipient ($19,000 in 2025 and 2026), gift splitting with a spouse (sec.Can send data out1 finding
Why it is in this group
- The input addresses people (input.recipients): what it sends cannot be taken back.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- outboundThe input takes a destination (input.recipients): what the tool writes goes there.
Findings
- Warn
  The server marks "check_gift" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The input addresses people (input.recipients): what it sends cannot be taken back.
  What this check looks for
Description, as the server wrote it
Checks a gift against the federal gift tax rules for a year (2013-2026): annual exclusion per recipient ($19,000 in 2025 and 2026), gift splitting with a spouse (sec. 2513, doubles it to $38,000), unlimited marital deduction for a US citizen spouse, and the separate annual exclusion for a non-citizen spouse ($190,000 in 2025, $194,000 in 2026 under Rev. Procs. 2024-40 and 2025-32). Returns taxable gifts, whether Form 709 is required, lifetime exemption used and left (2026: $15,000,000), and any gift tax due.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
- title: Gift check

Changes things 1Creates or changes something that can be changed back.Claude Code: ask

calculate_estate_taxCalculates US federal estate tax the Form 706 way: taxable estate (gross estate minus deductions such as debts, expenses, marital and charitable bequests), plus adjusted taxable gi…No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
Calculates US federal estate tax the Form 706 way: taxable estate (gross estate minus deductions such as debts, expenses, marital and charitable bequests), plus adjusted taxable gifts, tentative tax on the unified rate schedule of 26 USC 2001(c) (18% to 40%), minus gift tax payable, minus the applicable credit on the basic exclusion amount plus any DSUE (portability) from a deceased spouse. Years 2013-2026. Uses $15,000,000 for 2026 deaths (P.L. 119-21), $13,990,000 for 2025. Federal only.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
- title: Estate tax

Only reads 2Looks things up and changes nothing.Show 2 read-only tools

compare_yearsCompares two years (2013-2026) side by side: basic exclusion amount, applicable credit, annual gift exclusion and non-citizen spouse exclusion, and, with a taxable estate, the fede…No findings
Why it is in this group
- The name "compare_years" says "compare": a word for reading.
Description, as the server wrote it
Compares two years (2013-2026) side by side: basic exclusion amount, applicable credit, annual gift exclusion and non-citizen spouse exclusion, and, with a taxable estate, the federal estate tax in each year. Default 2025 vs 2026, the year P.L. 119-21 raised the exemption to $15,000,000 instead of letting it fall to about half.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
- title: Compare years
get_exemption_amountsReturns the federal basic exclusion amount (estate and lifetime gift tax exemption), the applicable credit, the filing threshold, the annual gift exclusion per recipient (and doubl…No findings
Why it is in this group
- The name "get_exemption_amounts" says "get": a word for reading.
Description, as the server wrote it
Returns the federal basic exclusion amount (estate and lifetime gift tax exemption), the applicable credit, the filing threshold, the annual gift exclusion per recipient (and doubled with gift splitting), the annual exclusion for gifts to a non-citizen spouse, the 2026 GST exemption and the 40% top rate. Years 2011-2026 from the IRS. 2026: $15,000,000 under P.L. 119-21 (One Big Beautiful Bill Act) sec. 70106, NOT the scheduled TCJA sunset to about half; 2025: $13,990,000; 2026 annual exclusion $19,000; non-citizen spouse $194,000 (Rev. Proc. 2025-32). Models trained before mid-2025 often predict the sunset.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
- title: Exemption amounts

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or untrusted-input.

Reads private data0: Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write0: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out1: Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.; check_gift

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Findings

Matches of fixed checks, with the text they matched.

1 warn

Warncheck_gift
The server marks "check_gift" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The input addresses people (input.recipients): what it sends cannot be taken back.
What this check looks for

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http estate-gift-tax-exemption-calculator https://estate-gift-tax-exemption-calculator-mcp.lipmichal.workers.dev/mcp

claude mcp add --transport http estate-gift-tax-exemption-calculator https://estate-gift-tax-exemption-calculator-mcp.lipmichal.workers.dev/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__estate-gift-tax-exemption-calculator__get_exemption_amounts",
      "mcp__estate-gift-tax-exemption-calculator__compare_years"
    ],
    "ask": [
      "mcp__estate-gift-tax-exemption-calculator__calculate_estate_tax",
      "mcp__estate-gift-tax-exemption-calculator__check_gift"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as estate-gift-tax-exemption-calculator. Review it before you use it.

Capability tags behind 1 rule

mcp__estate-gift-tax-exemption-calculator__check_gift outbound

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/io.github.theluckystrike/estate-gift-tax-exemption-calculator-mcp/verify?hash=925e5a0f2cc38b384851d62aa3d6609667c5e896fa14e3c36d909426c56fa061" | jq -e '.changed == false'

Pinned hash 925e5a0f2cc3, from Nov 2, 2026, 05:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.theluckystrike/estate-gift-tax-exemption-calculator-mcp/changes.xml

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Badge

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Source: MCP Registry · repository. Synced Nov 2, 2026, 06:17 UTC.