Precisioncalc MCP
High-precision finance & business calculations for AI agents — exact decimals, never floats.
Connect it
Settings → Connectors → Add custom connector
URL: https://precisioncalc-mcp.pages.dev/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://precisioncalc-mcp.pages.dev/mcp{
"mcpServers": {
"precisioncalc-mcp": {
"url": "https://precisioncalc-mcp.pages.dev/mcp"
}
}
}claude mcp add --transport http precisioncalc-mcp https://precisioncalc-mcp.pages.dev/mcp{
"servers": {
"precisioncalc-mcp": {
"type": "http",
"url": "https://precisioncalc-mcp.pages.dev/mcp"
}
}
}{
"mcpServers": {
"precisioncalc-mcp": {
"command": "npx",
"args": [
"-y",
"precisioncalc-mcp@2.1.1"
]
}
}
}claude mcp add precisioncalc-mcp -- npx -y precisioncalc-mcp@2.1.111 tools, verified live
calculate_metricCompute a business/SaaS/finance metric with exact decimal precision. Metrics: ltv, cac, ltv_cac_ratio, payback_period_months, contribution_margin, gross_margin, churn_rate, mrr_growth_rate, arr, break_even_units, nrr, grr, rule_of_40, magic_number. Rates/margins are decimals (0.05=5%). Call list_metrics for schemas.
list_metricsList every supported metric with descriptions and required/optional params.
currency_convertConvert an amount between major currencies (USD, EUR, GBP, JPY, CAD, AUD, CHF, CNY, INR) with Decimal precision. Static offline table on the free tier; live/historical ECB rates (date/live=true) require a paid plan.
business_daysBusiness-day arithmetic honoring weekends + regional holidays. operation: add_business_days (needs days, negative ok) | count_business_days (needs end_date, inclusive) | next_business_day | previous_business_day. region: US | UK | EU | NONE. custom_holidays: list of YYYY-MM-DD.
compound_growthCompound-interest/growth math. operation: future_value (rate, years, present_value) | present_value (rate, years, future_value) | cagr (begin_value, end_value, years). rate is annual decimal (0.08=8%). compounding: daily|weekly|monthly|quarterly|semiannually|annually|continuous.
net_present_valueNet Present Value (discounted cash flow). NPV = sum(CF_t/(1+rate)^t). cashflows[0] = period 0 (usually the negative outlay).
internal_rate_of_returnInternal Rate of Return: per-period rate where NPV=0 (Newton + bisection). Requires a sign change in cashflows.
loan_amortizationLevel-payment loan: monthly payment, total interest, payoff, and (optional) full schedule. payment = P*r/(1-(1+r)^-n), r=annual_rate/12.
depreciationAsset depreciation schedule. method: straight_line | declining_balance | sum_of_years_digits. Book value converges to salvage_value.
batch_calculatePAID FEATURE. Run many calculations in one request. calls: list of {tool, arguments} (max 100). One failure never aborts the batch.
health_checkServer health/status metadata.
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