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UK Rules & Rates

by dailylifeelevation-ai · remote · no sign-in to list tools · v0.1.0 · published by GitHub user dailylifeelevation-ai

Sourced, date-aware UK tax and payroll rates, deadlines and UK business checks, with GOV.UK sources.

Changes · 2
CompareRegistry entry

8 tools: 2 change things and 6 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http ukrules https://ukrules.dailylifeelevation.workers.dev/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

8 tools

Changes things 2Claude Code: ask
  • calculate_employer_niPaid.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
    Paid. Calculates employer Class 1 National Insurance for one or more annual salaries on a date using verified UK Rules data. Use this instead of doing the maths yourself. Paid: $0.005 USD per call via x402, or use an API key (see /pricing).

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: false
  • check_uk_businessSourced check of a UK company from Companies House: status, type, incorporation date, registered office, SIC codes, filing health (accounts and confirmation statement overdue and b…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
    Sourced check of a UK company from Companies House: status, type, incorporation date, registered office, SIC codes, filing health (accounts and confirmation statement overdue and by how many days, plus the GOV.UK late filing penalty band if accounts are overdue), insolvency and charges flags, active officers and PSCs, each with a source_url. VAT check: coming soon (a vat_number is accepted but not checked yet). Not a credit check, sanctions or PEP screening. Counts as 2 calls on an API key plan. Paid: $0.02 USD per call via x402, or use an API key (see /pricing).

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: false
Only reads 6Claude Code: allow
  • get_rateGet the UK rate/threshold in force for a key on a date (default today, Europe/London).No findings

    Why it is in this group

    • The name "get_rate" says "get": a word for reading.
    Description, as the server wrote it
    Get the UK rate/threshold in force for a key on a date (default today, Europe/London). Returns value, unit, effective dates and source. Paid: $0.005 USD per call via x402, or use an API key (see /pricing).

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: false
  • get_rate_historyGet every version of a rule, ordered by applies_from.No findings

    Why it is in this group

    • The name "get_rate_history" says "get": a word for reading.
    Description, as the server wrote it
    Get every version of a rule, ordered by applies_from. Paid: $0.005 USD per call via x402, or use an API key (see /pricing).

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: false
  • list_deadlinesList UK tax/payroll deadlines.No findings

    Why it is in this group

    • The name "list_deadlines" says "list": a word for reading.
    Description, as the server wrote it
    List UK tax/payroll deadlines. Fixed-date deadlines get the next due date on or after from_date (default today, Europe/London) and are filtered to to_date; deadlines that depend on your own period (e.g. VAT, Corporation Tax, Companies House) follow with next_due null and a plain-English recurrence_rule. Paid: $0.005 USD per call via x402, or use an API key (see /pricing).

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: false
  • list_topicsList rule topics (e.g.No findings

    Why it is in this group

    • The name "list_topics" says "list": a word for reading.
    Description, as the server wrote it
    List rule topics (e.g. income_tax, vat) with the number of rules in each.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: false
  • search_rulesFree.No findings

    Why it is in this group

    • The name "search_rules" says "search": a word for reading.
    Description, as the server wrote it
    Free. Finds rule keys. Use get_rate (paid) to get the value in force on a date.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: false
  • search_uk_companySearch Companies House for UK companies by name.No findings

    Why it is in this group

    • The name "search_uk_company" says "search": a word for reading.
    Description, as the server wrote it
    Search Companies House for UK companies by name. Free. Returns up to 10 matches (name, company number, status, incorporation date) so you can pick the right company_number for check_uk_business.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true

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.

Install

Pinned to version 0.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http ukrules https://ukrules.dailylifeelevation.workers.dev/mcp

Run in a terminal.

Claude Code permissions

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

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__ukrules__list_topics",
      "mcp__ukrules__get_rate",
      "mcp__ukrules__search_rules",
      "mcp__ukrules__get_rate_history",
      "mcp__ukrules__list_deadlines",
      "mcp__ukrules__search_uk_company"
    ],
    "ask": [
      "mcp__ukrules__check_uk_business",
      "mcp__ukrules__calculate_employer_ni"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as ukrules. Review it before you use it.