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UK Statutory Sick Pay and Maternity Pay

io.github.theluckystrike/uk-statutory-sick-pay-maternity-pay-calculator-mcptheluckystrikestreamable-httpv1.0.0Scanned

UK Statutory Sick Pay (April 2026 rules), Maternity Pay and National Living Wage from gov.uk.

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

Tools: 0 delete, 2 irreversible, 1 write, 1 read.
  • Reads private data · 0
  • Reads text others write · 0
  • Can send data out · 0
  • 2 findings

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

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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.

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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 2Claude Code: ask
  • calculate_statutory_maternity_payWorks out UK Statutory Maternity Pay (SMP) week by week for 39 weeks: 90% of average weekly earnings for 6 weeks, then the lower of the flat rate or 90% for 33 weeks.1 finding

    Why it is in this group

    • The name "calculate_statutory_maternity_pay" says "pay": a word that usually means money moves, which cannot be taken back.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "calculate_statutory_maternity_pay" 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 name "calculate_statutory_maternity_pay" says "pay": a word that usually means money moves, which cannot be taken back.

      What this check looks for
    Description, as the server wrote it
    Works out UK Statutory Maternity Pay (SMP) week by week for 39 weeks: 90% of average weekly earnings for 6 weeks, then the lower of the flat rate or 90% for 33 weeks. Flat rate £187.18 from 6 April 2025 and £194.32 from 5 April 2026, switching for pay weeks that start after the April uprating. Finds the expected week of childbirth, the qualifying week (15th week before), the latest employment start date for 26 weeks' service and the lower earnings limit for that week (£125 in 2025/26, £129 in 2026/27). Same structure applies to Statutory Adoption Pay. Figures from gov.uk, fetched 2026-11-02.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
    • title: UK Statutory Maternity Pay
  • calculate_statutory_sick_payWorks out UK Statutory Sick Pay (SSP) for a period of sickness.1 finding

    Why it is in this group

    • The name "calculate_statutory_sick_pay" says "pay": a word that usually means money moves, which cannot be taken back.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "calculate_statutory_sick_pay" 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 name "calculate_statutory_sick_pay" says "pay": a word that usually means money moves, which cannot be taken back.

      What this check looks for
    Description, as the server wrote it
    Works out UK Statutory Sick Pay (SSP) for a period of sickness. Knows the Employment Rights Act 2025 changes in force from 6 April 2026: SSP is paid from the first qualifying day (no 3 waiting days), the lower earnings limit is gone, and the weekly rate is the lower of £123.25 or 80% of average weekly earnings. For sickness starting 6 April 2025 to 5 April 2026 it applies the old rules (£118.75 flat, £125 lower earnings limit, 3 waiting days, 4-day period of incapacity) and flags the SI 2026/373 transitional rules. Uses HMRC's unrounded daily rates and 28-week cap. Rates fetched from gov.uk and legislation.gov.uk on 2026-11-02.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
    • title: UK Statutory Sick Pay
Changes things 1Claude Code: ask
  • check_eligibilityChecks the qualifying conditions for UK Statutory Sick Pay, Maternity, Paternity, Adoption or Shared Parental Pay and returns each condition as met, not met or not checkable, plus …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
    Checks the qualifying conditions for UK Statutory Sick Pay, Maternity, Paternity, Adoption or Shared Parental Pay and returns each condition as met, not met or not checkable, plus the weekly amounts. Knows that from 6 April 2026 SSP has no earnings threshold and no waiting days, and applies the 26 weeks' continuous employment test into the qualifying week (15th week before the due week, or the matching week for adoption) and the lower earnings limit (£125 in 2025/26, £129 in 2026/27). Data from gov.uk and legislation.gov.uk, fetched 2026-11-02.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
    • title: Check UK statutory pay eligibility
Only reads 1Show 1 read-only tool
  • get_minimum_wage_ratesReturns the UK National Living Wage and National Minimum Wage hourly rates in force on a date, by age band and apprentice rate, and the rate that applies to a given age.No findings

    Why it is in this group

    • The name "get_minimum_wage_rates" says "get": a word for reading.
    Description, as the server wrote it
    Returns the UK National Living Wage and National Minimum Wage hourly rates in force on a date, by age band and apprentice rate, and the rate that applies to a given age. Holds April 2024, April 2025, April 2026 (£12.71 for 21 and over, £10.85 for 18 to 20, £8 under 18 and apprentices) and the published April 2027 rates (£13.21, £11.27, £8.31). Can also give weekly and annual pay at the rate for given hours. Rates fetched from gov.uk on 2026-11-02.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
    • title: UK minimum wage 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 or outbound.

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 out0
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.

2 warn
  • Warncalculate_statutory_sick_pay

    The server marks "calculate_statutory_sick_pay" 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 name "calculate_statutory_sick_pay" says "pay": a word that usually means money moves, which cannot be taken back.

    What this check looks for
  • Warncalculate_statutory_maternity_pay

    The server marks "calculate_statutory_maternity_pay" 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 name "calculate_statutory_maternity_pay" says "pay": a word that usually means money moves, which 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 uk-statutory-sick-pay-maternity-pay-calculator https://uk-statutory-sick-pay-maternity-pay-calculator-mcp.lipmichal.workers.dev/mcp
claude mcp add --transport http uk-statutory-sick-pay-maternity-pay-calculator https://uk-statutory-sick-pay-maternity-pay-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__uk-statutory-sick-pay-maternity-pay-calculator__get_minimum_wage_rates"
    ],
    "ask": [
      "mcp__uk-statutory-sick-pay-maternity-pay-calculator__calculate_statutory_sick_pay",
      "mcp__uk-statutory-sick-pay-maternity-pay-calculator__calculate_statutory_maternity_pay",
      "mcp__uk-statutory-sick-pay-maternity-pay-calculator__check_eligibility"
    ],
    "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 uk-statutory-sick-pay-maternity-pay-calculator. Review it before you use it.

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/io.github.theluckystrike/uk-statutory-sick-pay-maternity-pay-calculator-mcp/verify?hash=fbc80c7948a523669bb4bcca97783065141350b36e2d07f68e0dddf90677e696" | jq -e '.changed == false'

Pinned hash fbc80c7948a5, 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/uk-statutory-sick-pay-maternity-pay-calculator-mcp/changes.xml

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