Exact answers for percentages, profit, GST, invoices, EOQ, DSO and 100+ business formulas.
Scored across 8 tools
Each of the seven area tools owns a clearly named domain (GST/TDS/invoice, finance MIS, HR/payroll, inventory/logistics, marketing/sales, numbers/dates/stats, pricing/profit), and descriptions explicitly cross-reference where overlap exists (e.g. 'GST (use gst_tds_invoice_calculators)'). Some residual overlap remains: DIO appears in both finance_mis and inventory_logistics, margin/markup in pricing_profit vs gross/net margin in finance_mis, and invoice discounts vs pricing discounts, which could cause misselection.
Seven tools follow a consistent '<domain>_calculators' noun pattern (finance_mis_calculators, hr_payroll_calculators, ...), which is predictable and readable. The catalogue tool business_calculator_list_formulas breaks the pattern as a verb_noun outlier, a minor deviation.
Eight tools is well within a sensible range: one catalogue/lookup tool plus seven topically scoped calculator bundles, each aggregating 3-7 sub-calculators. The granularity is deliberately coarse (one tool per business area) rather than exploding into 40+ single-formula tools, which is appropriate, though it means each tool's description is very long.
Coverage across pricing, GST/TDS, payroll, inventory, marketing/sales, finance MIS and general number/date/stat helpers is broad and includes a catalogue tool for discovery, so most everyday formula needs have a home. The consistent refusal of interest/EMI, NPV/IRR, discounting and loan schedules is a real dead end for a 'business calculator' asking for EMI, but it is stated up front and repeatedly, so agents can route around it.
List the business calculator's formulas: every calculator (gst_calculator, margin_markup_calculator, invoice_calculator, break_even_calculator, tds_tcs_calculator and 27 more) with its operations, synonyms, input fields and units, formula and example inputs. Inputs: tool (one calculator), query (search words, e.g. 'markup', 'ageing', 'gratuity'), operation (with tool: plain-language explanation and a worked example). Returns the catalogue only; it does not calculate your numbers (use the area tool for the calculator and run the script). Not for interest / EMI maths (excluded).
Inputs: tool, query, operation. Returns: tool, tools, inputs, reason, +11 more
Calculate finance and MIS figures exactly: gross / operating / net margin, current and quick ratio, debt-to-equity, working capital, asset turnover, ROE / ROA; DSO, DPO, DIO, cash conversion cycle, receivable / payable ageing buckets; budget vs actual (favourable / adverse), variance table, cost allocation by driver; depreciation schedules (straight-line, WDV, Income-tax half-rate rule); growth %, CAGR on values, market share, contribution to growth, index numbers. Returns a standard-library Python script with only these calculators (ratio_analysis_calculator, working_capital_days_calculator, budget_variance_calculator, depreciation_calculator, growth_share_calculator) to run in your code sandbox; each answer gives result, formula, inputs used, rounding, rule version and effective date. Inputs: tools (narrow to some of these calculators), calls ([{tool, operation, inputs, rounding?, as_of?}] baked into the script; a calculator from another area named in calls is added), calls_path (JSON file of calls in your sandbox). Calculation never runs on this server or any API. Not for EMI / interest / NPV / IRR (refused), nor interest, NPV, IRR, discounting, loan schedules (refused); cash-timing forecasts (MCP 64). Operation and input names: business_calculator_list_formulas.
Inputs: calls, tools, calls_path, full_catalog. Returns: area, notes, script, language, +11 more
Calculate Indian GST, TDS / TCS and invoice totals exactly: split ₹1,180 into base + GST, add GST, CGST + SGST / UTGST vs IGST by place of supply or GSTIN, reverse charge, GST slabs on a date (GST 2.0: 5 / 18 / 40); TDS by section with threshold check (194C, 194H, 194I, 194J, 194Q, 194T ...; Income-tax Act 2025 s.393 from 1-Apr-2026), TCS (s.394 rates from 1-Apr-2026); invoice lines → discount → GST → round-off → amount in words; convert currency at a rate you supply. Returns a standard-library Python script with only these calculators (gst_calculator, tds_tcs_calculator, invoice_calculator, currency_converter) to run in your code sandbox; each answer gives result, formula, inputs used, rounding, rule version and effective date. Inputs: tools (narrow to some of these calculators), calls ([{tool, operation, inputs, rounding?, as_of?}] baked into the script; a calculator from another area named in calls is added), calls_path (JSON file of calls in your sandbox). Calculation never runs on this server or any API. Not for EMI / interest / NPV / IRR (refused), nor HSN classification, filing returns, salary TDS, live FX rates, interest. Operation and input names: business_calculator_list_formulas.
Inputs: calls, tools, calls_path, full_catalog. Returns: area, notes, script, language, +11 more
Calculate payroll, gratuity and workforce metrics exactly: overtime pay, pro-rata salary for joiners and leavers, leave accrual (OSH Code 1 day per 20 worked), gratuity (15/26, ₹20 lakh cap, 5-year rule, fixed-term 1 year under the Code on Social Security from 21-Nov-2025); attrition, average headcount, absenteeism, cost per hire, revenue per employee, billable utilisation. Returns a standard-library Python script with only these calculators (payroll_calculator, workforce_metrics_calculator) to run in your code sandbox; each answer gives result, formula, inputs used, rounding, rule version and effective date. Inputs: tools (narrow to some of these calculators), calls ([{tool, operation, inputs, rounding?, as_of?}] baked into the script; a calculator from another area named in calls is added), calls_path (JSON file of calls in your sandbox). Calculation never runs on this server or any API. Not for EMI / interest / NPV / IRR (refused), nor salary income-tax, PF / ESI contributions, legal advice. Operation and input names: business_calculator_list_formulas.
Inputs: calls, tools, calls_path, full_catalog. Returns: area, notes, script, language, +11 more
Calculate stock, purchase, shipping and production numbers exactly: EOQ, reorder point, safety stock z·σ·√L, days of cover; inventory turnover, DIO, fill rate, FIFO and weighted-average stock valuation, dead stock %; landed cost (freight / duty / insurance allocated by value, weight or qty), import duty BCD + SWS + IGST; courier volumetric and chargeable weight, CBM, cartons, pallets; OEE, capacity utilisation, takt and cycle time, yield / scrap, Little's law. Returns a standard-library Python script with only these calculators (eoq_reorder_calculator, inventory_metrics_calculator, landed_cost_calculator, shipping_weight_calculator, production_efficiency_calculator) to run in your code sandbox; each answer gives result, formula, inputs used, rounding, rule version and effective date. Inputs: tools (narrow to some of these calculators), calls ([{tool, operation, inputs, rounding?, as_of?}] baked into the script; a calculator from another area named in calls is added), calls_path (JSON file of calls in your sandbox). Calculation never runs on this server or any API. Not for EMI / interest / NPV / IRR (refused), nor demand forecasting (MCP 18) or multi-SKU optimisation (MCP 16). Operation and input names: business_calculator_list_formulas.
Inputs: calls, tools, calls_path, full_catalog. Returns: area, notes, script, language, +11 more
Calculate marketing, funnel and subscription metrics exactly: CTR, CPC, CPM, CPL, CPA, ROAS, simple ROI; funnel stage conversion, win rate, average deal size, sales velocity, quota attainment, pipeline coverage; CAC, LTV (no discounting), LTV:CAC, CAC payback, ARPU, MRR / ARR, churn and retention, NRR / GRR. Returns a standard-library Python script with only these calculators (ad_metrics_calculator, sales_funnel_calculator, unit_economics_calculator) to run in your code sandbox; each answer gives result, formula, inputs used, rounding, rule version and effective date. Inputs: tools (narrow to some of these calculators), calls ([{tool, operation, inputs, rounding?, as_of?}] baked into the script; a calculator from another area named in calls is added), calls_path (JSON file of calls in your sandbox). Calculation never runs on this server or any API. Not for EMI / interest / NPV / IRR (refused), nor attribution modelling, discounted LTV, customer segmentation (MCP 14). Operation and input names: business_calculator_list_formulas.
Inputs: calls, tools, calls_path, full_catalog. Returns: area, notes, script, language, +11 more
Format numbers and calculate dates, units and statistics exactly: round half-up / banker's / nearest ₹1 / 50 paise, Indian lakh-crore format 1,23,45,678.50, amount in words, lakh / crore ↔ million / billion, read '₹1.2 lakh'; convert kg / t / lb, cm / in, sq ft / acre, litre / CBM, dozen / gross, °C / °F; days between dates, working days with holidays, due dates, ageing days, month-end, Indian financial year and quarter; mean, weighted average, median, mode, std dev, percentile, quartiles, z-score; survey sample size, margin of error, confidence intervals; moving average, linear trend, correlation. Returns a standard-library Python script with only these calculators (number_format_calculator, unit_converter, date_due_date_calculator, average_statistics_calculator, survey_sample_calculator, trend_basic_calculator) to run in your code sandbox; each answer gives result, formula, inputs used, rounding, rule version and effective date. Inputs: tools (narrow to some of these calculators), calls ([{tool, operation, inputs, rounding?, as_of?}] baked into the script; a calculator from another area named in calls is added), calls_path (JSON file of calls in your sandbox). Calculation never runs on this server or any API. Not for EMI / interest / NPV / IRR (refused), nor forecasting with seasonality (MCP 18). Operation and input names: business_calculator_list_formulas.
Inputs: calls, tools, calls_path, full_catalog. Returns: area, notes, script, language, +11 more
Calculate prices, profit and percentages exactly: what is 18% of a price, % change, percentage points, reverse %; price from target margin, margin vs markup; single / chain (10% + 5%) / trade + cash discounts, MRP back-calculation; profit or loss % on cost and on sale; slab / volume pricing, sales commission slabs, incentive payout; break-even units and revenue, contribution margin, target-profit units, margin of safety; split an amount by a ratio, rule of three. Returns a standard-library Python script with only these calculators (percentage_calculator, margin_markup_calculator, discount_calculator, profit_loss_calculator, tier_pricing_commission_calculator, break_even_calculator, ratio_proportion_calculator) to run in your code sandbox; each answer gives result, formula, inputs used, rounding, rule version and effective date. Inputs: tools (narrow to some of these calculators), calls ([{tool, operation, inputs, rounding?, as_of?}] baked into the script; a calculator from another area named in calls is added), calls_path (JSON file of calls in your sandbox). Calculation never runs on this server or any API. Not for EMI / interest / NPV / IRR (refused), nor win-probability pricing (Saifs MCP 59); GST (use gst_tds_invoice_calculators). Operation and input names: business_calculator_list_formulas.
Inputs: calls, tools, calls_path, full_catalog. Returns: area, notes, script, language, +11 more
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
Loading tool schema changelog…
Find and run exact business, finance and SaaS calculators instead of guessing the math.
Exact arithmetic, algebra, calculus, physics, chemistry and finance with a checkable formula.
90+ pure finance calculators: loans, investing, bonds, options, tax. Stateless, stores nothing.
High-precision finance & business calculations for AI agents — exact decimals, never floats.
Add one secure layer between your agents and this server.
