# TapTax (uk.co.taptax/taptax): tool descriptions scored - tools/list taken: 2026-11-02 (UTC) - From: [Official MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/uk.co.taptax%2Ftaptax/versions/latest) - Connected to: https://api.taptax.co.uk/mcp - Homepage: https://taptax.co.uk/integrations/claude - Repository: https://github.com/udohsolomon/taptax-mcp - Scoring rules: v2 - Tools: 49 - Average: 51.3 / 100 (Cloudy) - Near-identical pairs: 2 This page shows how TapTax (uk.co.taptax/taptax)'s tool descriptions scored, the issues found and the names of its tools and parameters. The descriptions are the server's own: read them where the copy came from. Forecall asked the URL this server lists in the official MCP Registry for its tools/list once, on the date above, without calling any tool. The server may have changed since. ## Across the server - Major: 49 tools. Above 40, models choose less accurately. ## Tools - `get_mileage_summary`: 32 / 100 - Major: Says nothing about when to use it, or when not to. - Major: Arguments without a description: taxYear. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - `mark_invoice_paid`: 32 / 100 - Major: Says nothing about when to use it, or when not to. - Major: Arguments without a description: invoiceId. - Minor: Says nothing about what it returns. - Minor: Required identifiers whose description does not say where the value comes from: invoiceId. Name the tool or the place that returns it, or models look it up first. - `update_transaction`: 32 / 100 - Major: Says nothing about when to use it, or when not to. - Major: Arguments without a description: id, businessOrPersonal, category, description, amount, date. - Minor: Says nothing about what it returns. - Minor: Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first. - `send_invoice`: 35 / 100 - Major: Says nothing about when to use it, or when not to. - Major: Arguments without a description: invoiceId. - Minor: Says nothing about what it returns. - Minor: Required identifiers whose description does not say where the value comes from: invoiceId. Name the tool or the place that returns it, or models look it up first. - `send_invoice_from_card`: 37 / 100 - Major: Arguments without a description: invoiceId, sendToken. - Minor: Says nothing about what it returns. - Minor: Required identifiers whose description does not say where the value comes from: invoiceId. Name the tool or the place that returns it, or models look it up first. - `list_transactions`: 38 / 100 - Major: Says nothing about when to use it, or when not to. - Major: Arguments without a description: taxYear, type, needsReview, limit. - Minor: No `required` list, so every argument is optional. - Minor: The meaning of the boolean argument needsReview is unclear. - Minor: Says nothing about what it returns. - `list_invoices`: 40 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Arguments without a description: limit. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - `calculate_stamp_duty`: 45 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Arguments without a description: propertyUse, firstTimeBuyer, replacingMainResidence. - Minor: The description mentions none of its 3 or more arguments. - Minor: The meaning of the boolean argument firstTimeBuyer is unclear. - Minor: The meaning of the boolean argument replacingMainResidence is unclear. - Minor: Says nothing about what it returns. - `log_mileage_trip`: 45 / 100 - Major: Arguments without a description: date, from, to, purpose. - Minor: Says nothing about what it returns. - `calculate_mileage_allowance`: 47 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Arguments without a description: averageMilesPerPassengerTrip. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - `get_mtd_deadlines`: 47 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - `get_tax_position`: 47 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - `create_invoice`: 48 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Arguments without a description: clientName, clientAddress, items, items[].description, items[].quantity, notes. - Minor: Says nothing about what it returns. - `check_mtd_status`: 49 / 100 - Major: Arguments without a description: selfEmploymentTurnover, propertyIncome. - `calculate_late_payment_interest`: 50 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - `calculate_markup`: 50 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - `calculate_profit_margin`: 50 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - `calculate_vat`: 50 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - `calculate_contractor_day_rate`: 52 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - `calculate_pro_rata_salary`: 52 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - `calculate_tax_on_multiple_incomes`: 52 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - `check_vat_registration`: 52 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Arguments without a description: firstYearOfVatRegistration. - Minor: The description mentions none of its 3 or more arguments. - Minor: The meaning of the boolean argument firstYearOfVatRegistration is unclear. - Minor: Says nothing about what it returns. - `plan_quarterly_tax_set_aside`: 52 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: No `required` list, so every argument is optional. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - `estimate_self_employed_tax`: 53 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Arguments without a description: studentLoanPlan. - Minor: Says nothing about what it returns. - `generate_invoice_numbers`: 53 / 100 - Minor: Arguments without a description: separator, datePart. - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - `calculate_child_benefit_charge`: 55 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - `calculate_cis_deduction`: 55 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - `calculate_dividend_tax`: 55 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - `calculate_invoice_due_date`: 55 / 100 - Minor: Arguments without a description: customer. - Minor: Says nothing about what it returns. - `calculate_savings_interest_tax`: 55 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - `calculate_student_loan_repayment`: 55 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Says nothing about what it returns. - `compare_inside_and_outside_ir35`: 55 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - `convert_hourly_rate_to_salary`: 55 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - `convert_salary_to_hourly_rate`: 55 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - `check_vat_reverse_charge`: 56 / 100 - Minor: No `required` list, so every argument is optional. - `add_transaction`: 57 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: Arguments without a description: type. - Minor: Says nothing about what it returns. - `calculate_gross_salary_for_take_home`: 57 / 100 - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - `compare_salary_and_dividends`: 57 / 100 - Minor: Says nothing about what it returns. - `estimate_self_assessment_penalties`: 57 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: The description mentions none of its 3 or more arguments. - `prepare_quarterly_update`: 57 / 100 - Minor: No `required` list, so every argument is optional. - Minor: Says nothing about what it returns. - `calculate_pension_tax_relief`: 58 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - `calculate_rental_income_tax`: 58 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - `calculate_take_home_pay`: 58 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - `compare_limited_company_and_sole_trader`: 58 / 100 - Major: Says nothing about when to use it, or when not to. - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. - `prepare_business_document`: 59 / 100 - Major: Says nothing about when to use it, or when not to. - Major: Arguments without a description: lines, lines[].description, lines[].quantity, clientName, clientAddress, clientEmail, fromAddress, paymentTerms, notes. - Minor: The description mentions none of its 3 or more arguments. - `calculate_corporation_tax`: 60 / 100 - Minor: Says nothing about what it returns. - `check_tax_code`: 60 / 100 - Minor: Arguments without a description: hasCompanyCar, hasPrivateMedical, receivesStatePension, hasMarriageAllowance, marriageAllowanceDirection. - Minor: The meaning of the boolean argument hasCompanyCar is unclear. - Minor: The meaning of the boolean argument hasPrivateMedical is unclear. - Minor: The meaning of the boolean argument receivesStatePension is unclear. - Minor: The meaning of the boolean argument hasMarriageAllowance is unclear. - `calculate_capital_gains_tax`: 63 / 100 - Minor: Says nothing about what it returns. - `calculate_salary_sacrifice`: 63 / 100 - Minor: The description mentions none of its 3 or more arguments. - Minor: Says nothing about what it returns. 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