Calculate.co.nz NZ Calculators: tool descriptions scored nz.co.calculate/calculator

tools/list taken: 2026-11-02 (UTC)
From: Official MCP Registry
Connected to: https://mcp.calculate.co.nz/mcp
Homepage: www.calculate.co.nz
Scoring rules: v2
Removal: support@forecall.dev

Scores, issues and names only

This page shows how Calculate.co.nz NZ Calculators (nz.co.calculate/calculator)'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.

servers/nz.co.calculate/calculator

Average score: 53.8 / 100Cloudy
Tools: 36
Near-identical descriptions: 0

Across the server

Minor
36 tools. Above 25, models start to tell tools apart less well.many_tools
Minor
The server has no instructions. Say there, once, what the server is for and when to use it: Claude Code and Gemini CLI read the instructions before the tool descriptions.instructions_missing

Tools

nz_gst_calculator

33 / 100Rain

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 8 / 25
Return value: 0 / 15
Constraints and side effects: 0 / 10
Examples: 5 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Major
Arguments without a description: amount, mode, gst_rate.param_no_description
Major
It may be destructive, but destructiveHint is not set.destructive_unmarked
Minor
Says nothing about what it returns.no_return_info
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

nz_kiwisaver_calculator

45 / 100Cloudy

Purpose: 17 / 20
When to use: 5 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: current_balance, current_age, retirement_age, annual_income, income_growth_pct, employee_rate_pct, employer_rate_pct, voluntary_amount, voluntary_frequency, fund_type, custom_return_pct, pir_rate_pct, annual_fee_pct, inflation_pct, switch_fund_at_age, switch_to_fund, switch_custom_return_pct.param_no_description

nz_mortgage_calculator

45 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 0 / 10
Examples: 5 / 10

Major
Arguments without a description: loan_amount, annual_interest_rate_pct, term_years.param_no_description
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

nz_working_for_families_calculator

45 / 100Cloudy

Purpose: 17 / 20
When to use: 5 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: children, family_income, children_under_3, iwtc_eligible, best_start_children_first_year_exempt, iwtc_after_march_2027.param_no_description
Minor
The meaning of the boolean argument iwtc_eligible is unclear.vague_boolean
Minor
The meaning of the boolean argument iwtc_after_march_2027 is unclear.vague_boolean

nz_final_pay_calculator

49 / 100Cloudy

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 5 / 25
Return value: 7 / 15
Constraints and side effects: 0 / 10
Examples: 5 / 10

Major
Arguments without a description: annual_salary, hourly_rate, hours_per_week, service, leave_balance_days, gross_earnings_total, average_weekly_earnings, notice_weeks, redundancy.param_no_description
Minor
No `required` list, so every argument is optional.no_required
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

nz_annual_leave_calculator

50 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: current_balance, current_balance_unit, hours_per_workday, holiday_rate_pct, hours_per_workweek, future_period, future_period_unit.param_no_description

nz_road_user_charges_calculator

50 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: annual_km, vehicle_type, block_size_km, purchase_method, fuel_efficiency_l_per_100km.param_no_description

nz_sick_leave_calculator

50 / 100Cloudy

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 3 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: start_date, as_at, days_taken, carry_over_days, extra_contractual_days, daily_pay.param_no_description
Minor
String arguments with no constraint or example: start_date.loose_string_param

nz_vehicle_loan_calculator

50 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: vehicle_price, deposit, annual_interest_rate_pct, term_years.param_no_description

nz_fbt_calculator

52 / 100Cloudy

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 5 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: benefit_type, rate_method, vehicle_value, value_method, days_available, employee_contribution, loan_balance, prescribed_rate_pct, actual_rate_pct, other_quarterly_value.param_no_description
Minor
No `required` list, so every argument is optional.no_required

nz_ncea_rank_score_calculator

52 / 100Cloudy

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 5 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: excellence_credits, merit_credits, achieved_credits, not_achieved_credits.param_no_description
Minor
No `required` list, so every argument is optional.no_required

nz_net_to_gross_calculator

52 / 100Cloudy

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 0 / 10
Examples: 5 / 10

Major
Arguments without a description: target_net, period, kiwisaver_rate, has_student_loan.param_no_description
Minor
The meaning of the boolean argument has_student_loan is unclear.vague_boolean
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

nz_paye_due_dates_calculator

52 / 100Cloudy

Purpose: 17 / 20
When to use: 20 / 20
Arguments: 3 / 25
Return value: 7 / 15
Constraints and side effects: 0 / 10
Examples: 5 / 10

Major
Arguments without a description: pay_date, annual_paye_and_esct, electronic_filer.param_no_description
Minor
String arguments with no constraint or example: pay_date.loose_string_param
Minor
The meaning of the boolean argument electronic_filer is unclear.vague_boolean
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

nz_paye_calculator

53 / 100Cloudy

Purpose: 20 / 20
When to use: 15 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 0 / 10

Major
Arguments without a description: annual_income, kiwisaver_rate, has_student_loan, claim_ietc.param_no_description
Minor
The meaning of the boolean argument has_student_loan is unclear.vague_boolean
Minor
The meaning of the boolean argument claim_ietc is unclear.vague_boolean

nz_pro_rata_salary_calculator

53 / 100Cloudy

Purpose: 20 / 20
When to use: 10 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: full_time_salary, full_time_hours, your_hours, kiwisaver_rate, has_student_loan, claim_ietc.param_no_description
Minor
The meaning of the boolean argument has_student_loan is unclear.vague_boolean
Minor
The meaning of the boolean argument claim_ietc is unclear.vague_boolean

nz_work_hours_calculator

53 / 100Cloudy

Purpose: 20 / 20
When to use: 10 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: days, hourly_rate.param_no_description

bmi_calculator

55 / 100Cloudy

Purpose: 20 / 20
When to use: 15 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 0 / 10
Examples: 5 / 10

Major
Arguments without a description: weight_kg, height_m.param_no_description
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

energy_expenditure_calculator

55 / 100Cloudy

Purpose: 17 / 20
When to use: 20 / 20
Arguments: 6 / 25
Return value: 7 / 15
Constraints and side effects: 0 / 10
Examples: 5 / 10

Major
Arguments without a description: sex, age, weight_kg, height_cm, activity_level, goal, body_fat_pct, target_weight_kg.param_no_description
Minor
String arguments with no constraint or example: sex.loose_string_param
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

nz_bonus_tax_calculator

55 / 100Cloudy

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: bonus_amount, annual_salary, kiwisaver_rate, has_student_loan.param_no_description
Minor
The meaning of the boolean argument has_student_loan is unclear.vague_boolean

nz_fuel_cost_calculator

55 / 100Cloudy

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: distance_km, consumption_l_per_100km, price_per_litre, weekly_km.param_no_description

nz_grocery_budget_calculator

55 / 100Cloudy

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: members, spend_level, diet, region, include_non_food.param_no_description
Minor
The meaning of the boolean argument include_non_food is unclear.vague_boolean

nz_hourly_to_salary_calculator

55 / 100Cloudy

Purpose: 20 / 20
When to use: 15 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 0 / 10
Examples: 5 / 10

Major
Arguments without a description: hourly_rate, hours_per_week, weeks_per_year, kiwisaver_rate, has_student_loan.param_no_description
Minor
The meaning of the boolean argument has_student_loan is unclear.vague_boolean
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

nz_lump_sum_tax_calculator

55 / 100Cloudy

Purpose: 20 / 20
When to use: 15 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 0 / 10
Examples: 5 / 10

Major
Arguments without a description: lump_sum, annual_salary, payment_type, kiwisaver_rate, has_student_loan.param_no_description
Minor
The meaning of the boolean argument has_student_loan is unclear.vague_boolean
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

nz_parental_leave_calculator

55 / 100Cloudy

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: annual_income, employment_type, hours_per_week, weeks_worked, weeks_of_leave, kiwisaver_opt_in, kiwisaver_rate.param_no_description
Minor
The meaning of the boolean argument kiwisaver_opt_in is unclear.vague_boolean

nz_schedular_payment_calculator

55 / 100Cloudy

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: payment_excluding_gst, activity, rate_option, nominated_rate_pct, gst_registered.param_no_description
Minor
The meaning of the boolean argument gst_registered is unclear.vague_boolean

nz_redundancy_entitlement_calculator

57 / 100Cloudy

Purpose: 17 / 20
When to use: 20 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 0 / 10
Examples: 5 / 10

Major
Arguments without a description: annual_salary, years_of_service, notice_weeks, notice_worked, annual_leave_days, alternative_holiday_days, redundancy_clause, custom_redundancy_amount, outstanding_wages.param_no_description
Minor
The meaning of the boolean argument notice_worked is unclear.vague_boolean
Minor
No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

find_calculator

58 / 100Cloudy

Purpose: 20 / 20
When to use: 20 / 20
Arguments: 3 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: query, limit.param_no_description
Minor
String arguments with no constraint or example: query.loose_string_param

nz_gpa_calculator

58 / 100Cloudy

Purpose: 20 / 20
When to use: 15 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: courses, scale.param_no_description

nz_secondary_tax_calculator

58 / 100Cloudy

Purpose: 20 / 20
When to use: 15 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: main_income, secondary_amount, secondary_frequency, has_student_loan.param_no_description
Minor
The meaning of the boolean argument has_student_loan is unclear.vague_boolean

nz_tax_refund_calculator

58 / 100Cloudy

Purpose: 20 / 20
When to use: 15 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: gross_income, tax_year, paye_deducted, acc_included_in_paye, tax_code, months_worked, secondary_income, secondary_tax_code, donations, student_loan_deducted, ietc_eligible.param_no_description
Minor
The meaning of the boolean argument acc_included_in_paye is unclear.vague_boolean
Minor
The meaning of the boolean argument ietc_eligible is unclear.vague_boolean

depreciation_calculator

60 / 100Cloudy

Purpose: 17 / 20
When to use: 20 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: initial_cost, method, additional_costs, salvage_value, useful_life_years, annual_rate_pct, years_to_schedule.param_no_description

nz_benefit_entitlement_calculator

60 / 100Cloudy

Purpose: 20 / 20
When to use: 20 / 20
Arguments: 5 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: benefit_type, situation, weekly_income, accommodation_cost, housing_type, area, children, winter.param_no_description
Minor
No `required` list, so every argument is optional.no_required
Minor
The meaning of the boolean argument winter is unclear.vague_boolean

nz_electricity_cost_calculator

60 / 100Cloudy

Purpose: 20 / 20
When to use: 20 / 20
Arguments: 5 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: region, household_size, daily_fixed_charge, custom_rate_cents, appliance_hours.param_no_description
Minor
No `required` list, so every argument is optional.no_required

nz_acc_weekly_compensation_calculator

63 / 100Cloudy

Purpose: 20 / 20
When to use: 20 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: weekly_earnings, hours_per_week, basis.param_no_description

nz_contractor_vs_employee_calculator

63 / 100Cloudy

Purpose: 20 / 20
When to use: 20 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: annual_gross_salary, annual_contract_income, annual_business_expenses, billable_weeks, acc_work_levy_pct, employer_kiwisaver_rate_pct, own_kiwisaver_rate_pct, annual_leave_days, has_student_loan, claim_ietc.param_no_description
Minor
The meaning of the boolean argument has_student_loan is unclear.vague_boolean
Minor
The meaning of the boolean argument claim_ietc is unclear.vague_boolean

nz_tax_code_calculator

63 / 100Cloudy

Purpose: 20 / 20
When to use: 20 / 20
Arguments: 8 / 25
Return value: 7 / 15
Constraints and side effects: 3 / 10
Examples: 5 / 10

Major
Arguments without a description: annual_income, job_type, total_income_all_jobs, has_student_loan, receives_wff_benefit_or_super.param_no_description
Minor
The meaning of the boolean argument has_student_loan is unclear.vague_boolean
Minor
The meaning of the boolean argument receives_wff_benefit_or_super is unclear.vague_boolean

What static scoring cannot tell

This score reads only the text of each description and schema: it says what is written, not what a model will do. Short tools whose names already say what they do, such as browser_close, score low here even when models use them well, and in our measurements current models chose the right tool in one step even from one-line descriptions, as long as the names and schemas differed. What the text cannot show, such as what happens over several steps and whether an added sentence helps or misleads, is what an evaluation measures, on the Pro and Team plans.

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