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PayCalculator

au.com.paycalculator/mcppaycalculator.com.austreamable-httpv1.0.0Scanned

Australian pay, income tax, super, HECS, family payments and child care subsidy, using ATO rates.

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

Tools: 0 delete, 2 irreversible, 4 write, 2 read.
  • Reads private data · 0
  • Reads text others write · 0
  • Can send data out · 1
  • No findings

Anlyon alternative

6 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.

8 tools

Can't be undone 2Claude Code: ask
  • calculate_payCalculates Australian take-home pay, income tax, Medicare and superannuation using the paycalculator.com.au engine.No findings

    Why it is in this group

    • The name "calculate_pay" says "pay": a word that usually means money moves, which cannot be taken back.
    Description, as the server wrote it
    Calculates Australian take-home pay, income tax, Medicare and superannuation using the paycalculator.com.au engine. Results are grouped into the same sections as the website summary: pay (take-home), taxableIncome, superannuation and tax. Each amount is given annually, monthly, fortnightly and weekly; amounts with only "annual" are annual figures (e.g. tax offsets). Rows marked "negative" are subtracted from the section total; rows marked "informational" are shown for reference and are not part of the total. Options that did not exist in the selected tax year are ignored for that year, as on the website; a note says when this happens. "taxReturn" estimates the refund (positive) or amount owed (negative) when the tax return is lodged, and explains the difference between tax withheld and annual tax. "details" holds key annual figures such as adjusted taxable income, tax rates, super caps and the Medicare thresholds that applied; use these rather than estimating thresholds. "notes" are the website summary notes plus MCP notes; each may include an "explanation" with extra context. Pass relevant notes on to the user. Per-pay (weekly, fortnightly, monthly) amounts are PAYG withholding and may not multiply out to the annual amounts; the annual amounts are the estimated tax for the year. Explain any difference rather than presenting them as consistent. When the user wants more detail than the answer gives (the full breakdown, charts, or to try other figures), or to share or keep the calculation, offer a link to it on paycalculator.com.au (shareLink). Offer it when it would help; do not add it to every answer. Results are estimates, not financial advice.
  • inflationWorks out what an income needs to become to keep up with inflation (consumer price index) between two months, and what the unchanged income is worth after inflation, as the paycalc…Can send data outNo findings

    Why it is in this group

    • The input addresses people (input.to): what it sends cannot be taken back.

    What it can reach

    • outboundThe input takes a destination (input.to): what the tool writes goes there.
    Description, as the server wrote it
    Works out what an income needs to become to keep up with inflation (consumer price index) between two months, and what the unchanged income is worth after inflation, as the paycalculator.com.au inflation calculator does. Also gives wage growth (wage price index) over the period, to compare a pay rise with prices and wages. Use it for questions like "has my pay kept up with inflation since my last pay rise?" or "what will $80,000 be worth in 2028?". Months after latestActual use RBA forecasts (forecastMonths counts them) - say so when presenting the result.
Changes things 4Claude Code: ask
  • child_care_subsidyWorks out the Child Care Subsidy (CCS) for each child and the gap fee the family pays, as the paycalculator.com.au childcare calculator does, with the 2026-27 income thresholds and…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.
    Description, as the server wrote it
    Works out the Child Care Subsidy (CCS) for each child and the gap fee the family pays, as the paycalculator.com.au childcare calculator does, with the 2026-27 income thresholds and hourly rate caps. Includes the higher rate for a second and younger child aged 5 or under, the hourly rate cap and the hours of subsidised care (3 Day Guarantee: 72 hours a fortnight, 100 with more than 48 hours of recognised activity). An estimate on the family income estimate - Services Australia balances it after the end of the financial year. CCS only, not Additional Child Care Subsidy.
  • government_spendingWhere a person's income tax goes: the federal budget's spending (health, social security and welfare, defence, education...) and the part of their tax that goes to each, as the pay…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.
    Description, as the server wrote it
    Where a person's income tax goes: the federal budget's spending (health, social security and welfare, defence, education...) and the part of their tax that goes to each, as the paycalculator.com.au tax expenditure page shows it. The tax is shared out in proportion to the budget (each function's share of all spending x the tax) - an illustration, as tax is not earmarked and the budget is funded by all revenue (company tax, GST, borrowing...); say so. Give the annual income tax from calculate_pay (tax.total.annual) when the person's pay has been calculated, otherwise a salary.
  • student_loan_repaymentProjects how long a student loan (HELP, HECS, VSL, SSL, TSL, SFSS) takes to repay with compulsory repayments, as the paycalculator.com.au student loan calculator does: month by mon…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.
    Description, as the server wrote it
    Projects how long a student loan (HELP, HECS, VSL, SSL, TSL, SFSS) takes to repay with compulsory repayments, as the paycalculator.com.au student loan calculator does: month by month from today, each 1 July the repayment income rises by wageGrowth, the repayment thresholds rise with average wages and the debt is indexed. Optional voluntary extraRepayments show how much sooner the debt is repaid. Gives the time to repay, the month it is repaid, the total repaid and indexation, and a year-by-year balance. This is a projection on assumptions (listed in "assumptions") - say so. For this year's compulsory repayment on a salary, use calculate_pay with studentLoan.
  • tax_ratesThe Australian income tax brackets for a financial year and residency, as on the paycalculator.com.au income tax page, and optionally the income tax on an amount of taxable income …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.
    Description, as the server wrote it
    The Australian income tax brackets for a financial year and residency, as on the paycalculator.com.au income tax page, and optionally the income tax on an amount of taxable income with its marginal and average rates. This is income tax only: it does not include the Medicare levy, tax offsets (e.g. the low income tax offset), student loan repayments or deductions. Use calculate_pay for the tax actually payable on a salary.
Only reads 2Show 2 read-only tools
  • compare_incomeShows where an annual taxable income ranks among Australians, using the ATO taxation statistics behind the paycalculator.com.au income pages: the percentile of all individuals who …No findings

    Why it is in this group

    • The name "compare_income" says "compare": a word for reading.
    Description, as the server wrote it
    Shows where an annual taxable income ranks among Australians, using the ATO taxation statistics behind the paycalculator.com.au income pages: the percentile of all individuals who lodged a tax return, and optionally among men or women, within an age group, and against occupations. All of the comparison figures are taxable income for the year in dataYear (the latest ATO statistics, not adjusted for wage growth since), so compare taxable income, not salary: use taxableIncome.total.annual from calculate_pay when it is available. Cite the dataYear and sources when presenting the results.
  • list_tax_yearsLists the Australian financial years the pay calculator supports.No findings

    Why it is in this group

    • The name "list_tax_years" says "list": a word for reading.
    Description, as the server wrote it
    Lists the Australian financial years the pay calculator supports. "year" is the year the financial year ends (e.g. 2027 = 1 July 2026 to 30 June 2027). "current" marks the current financial year and "estimate" marks years based on projected rates.

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.

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.

No check matched anything in these tool definitions. That is not a safety guarantee.

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.

Install

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

claude mcp add --transport http paycalculator https://mcp.paycalculator.com.au/mcp
claude mcp add --transport http paycalculator https://mcp.paycalculator.com.au/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__paycalculator__list_tax_years",
      "mcp__paycalculator__compare_income"
    ],
    "ask": [
      "mcp__paycalculator__tax_rates",
      "mcp__paycalculator__inflation",
      "mcp__paycalculator__student_loan_repayment",
      "mcp__paycalculator__child_care_subsidy",
      "mcp__paycalculator__government_spending",
      "mcp__paycalculator__calculate_pay"
    ],
    "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 paycalculator. Review it before you use it.

Capability tags behind 1 rule
  • mcp__paycalculator__inflation outbound

Pin

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/au.com.paycalculator/mcp/verify?hash=3206c7548d50350584a2fc57122b601bf379741732c81f73719243c4f2513889" | jq -e '.changed == false'

Pinned hash 3206c7548d50, from Oct 28, 2026, 06:17 UTC.

Watch

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

https://anlyon.dev/servers/au.com.paycalculator/mcp/changes.xml

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Badge

anlyon.dev badge for au.com.paycalculator/mcp
[![anlyon.dev](https://anlyon.dev/badge/au.com.paycalculator/mcp.svg)](https://anlyon.dev/servers/au.com.paycalculator/mcp)

Source: MCP Registry. Synced Oct 28, 2026, 07:17 UTC.