precisioncalc-mcp
High-precision finance & business calculations for AI agents — exact decimals, never floats.
使うべきか
品質と安全性
検出事項（4）
- LOWTool 'compound_growth' description lacks action verbcompound_growth 内
- LOWTool 'internal_rate_of_return' description lacks action verbinternal_rate_of_return 内
- LOWTool 'loan_amortization' description lacks action verbloan_amortization 内
- LOWTool 'health_check' description lacks action verbhealth_check 内
ツール定義とプロトコルへの準拠に関する自動分析に基づいています。
コンテキストコスト
これは、サーバーのツールがモデルのコンテキストに読み込まれるたびに消費されるおおよそのトークン数です。数が多いほど、ほかのタスクに使える注意が減ります。
インストール
ワンクリックインストール
これを `claude_desktop_config.json` ファイルに追加してください:
{
"mcpServers": {
"precisioncalc-mcp": {
"command": "npx",
"args": [
"precisioncalc-mcp"
]
}
}
}実行可能なパッケージ
2.1.1stdioリモートエンドポイント
https://precisioncalc-mcp.pages.dev/mcpstreamable-httpできること
ツール一覧
ツール（11）
🟢calculate_metric(metric, params, currency)
Compute 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.
入力スキーマ
{
"type": "object",
"properties": {
"metric": {
"type": "string"
},
"params": {
"type": "object"
},
"currency": {
"type": "string",
"default": "USD"
}
},
"required": [
"metric",
"params"
]
}🟢list_metrics
List every supported metric with descriptions and required/optional params.
入力スキーマ
{
"type": "object",
"properties": {}
}⚪currency_convert(amount, from_currency, to_currency, date, live)
Convert 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.
入力スキーマ
{
"type": "object",
"properties": {
"amount": {
"type": "number"
},
"from_currency": {
"type": "string"
},
"to_currency": {
"type": "string"
},
"date": {
"type": "string"
},
"live": {
"type": "boolean"
}
},
"required": [
"amount",
"from_currency",
"to_currency"
]
}🟡business_days(operation, start_date, days, end_date, region, ...)
Business-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.
入力スキーマ
{
"type": "object",
"properties": {
"operation": {
"type": "string"
},
"start_date": {
"type": "string"
},
"days": {
"type": "integer"
},
"end_date": {
"type": "string"
},
"region": {
"type": "string",
"default": "US"
},
"custom_holidays": {
"type": "array",
"items": {
"type": "string"
}
}
},
"required": [
"operation",
"start_date"
]
}⚪compound_growth(operation, rate, years, present_value, future_value, ...)
Compound-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.
入力スキーマ
{
"type": "object",
"properties": {
"operation": {
"type": "string"
},
"rate": {
"type": "number"
},
"years": {
"type": "number"
},
"present_value": {
"type": "number"
},
"future_value": {
"type": "number"
},
"begin_value": {
"type": "number"
},
"end_value": {
"type": "number"
},
"compounding": {
"type": "string",
"default": "annually"
},
"currency": {
"type": "string",
"default": "USD"
}
},
"required": [
"operation"
]
}⚪net_present_value(rate, cashflows, currency)
Net Present Value (discounted cash flow). NPV = sum(CF_t/(1+rate)^t). cashflows[0] = period 0 (usually the negative outlay).
入力スキーマ
{
"type": "object",
"properties": {
"rate": {
"type": "number"
},
"cashflows": {
"type": "array",
"items": {
"type": "number"
}
},
"currency": {
"type": "string",
"default": "USD"
}
},
"required": [
"rate",
"cashflows"
]
}🟡internal_rate_of_return(cashflows, guess)
Internal Rate of Return: per-period rate where NPV=0 (Newton + bisection). Requires a sign change in cashflows.
入力スキーマ
{
"type": "object",
"properties": {
"cashflows": {
"type": "array",
"items": {
"type": "number"
}
},
"guess": {
"type": "number",
"default": 0.1
}
},
"required": [
"cashflows"
]
}⚪loan_amortization(principal, annual_rate, term_months, extra_payment, currency, ...)
Level-payment loan: monthly payment, total interest, payoff, and (optional) full schedule. payment = P*r/(1-(1+r)^-n), r=annual_rate/12.
入力スキーマ
{
"type": "object",
"properties": {
"principal": {
"type": "number"
},
"annual_rate": {
"type": "number"
},
"term_months": {
"type": "integer"
},
"extra_payment": {
"type": "number",
"default": 0
},
"currency": {
"type": "string",
"default": "USD"
},
"include_schedule": {
"type": "boolean",
"default": false
}
},
"required": [
"principal",
"annual_rate",
"term_months"
]
}⚪depreciation(method, cost, salvage_value, useful_life_years, currency)
Asset depreciation schedule. method: straight_line | declining_balance | sum_of_years_digits. Book value converges to salvage_value.
入力スキーマ
{
"type": "object",
"properties": {
"method": {
"type": "string"
},
"cost": {
"type": "number"
},
"salvage_value": {
"type": "number"
},
"useful_life_years": {
"type": "integer"
},
"currency": {
"type": "string",
"default": "USD"
}
},
"required": [
"method",
"cost",
"salvage_value",
"useful_life_years"
]
}🟢batch_calculate(calls)
PAID FEATURE. Run many calculations in one request. calls: list of {tool, arguments} (max 100). One failure never aborts the batch.
入力スキーマ
{
"type": "object",
"properties": {
"calls": {
"type": "array",
"items": {
"type": "object"
}
}
},
"required": [
"calls"
]
}🟢health_check
Server health/status metadata.
入力スキーマ
{
"type": "object",
"properties": {}
}コミュニティ
エビデンス