Calcnook MCP Server
Personal finance calculators for seven countries plus Islamic finance: income tax, loans, retirement, VAT, Zakat, Murabaha, Ijarah and halal stock screening.
Install
The installation steps are in the documentation below. Documentation
Documentation
From the project's README on GitHub, refreshed weekly. Links open on GitHub.
calcnook-mcp
MCP server wrapping the calcnook financial engine. Gives any MCP-compatible AI agent (Claude Code, Cursor, Goose, Continue, etc.) native access to 17 calculation tools across compound interest, SIP/DCA, loans, retirement planning, BMI/BMR, Islamic finance, income tax (US/UK/CA/AU/India), VAT, End of Service Gratuity, and more.
Install
Preferred — zero setup via uvx:
uvx calcnook-mcpOr pip:
pip install calcnook-mcp
calcnook-mcpConfigure your AI agent
Claude Desktop / Claude Code
Add to claude_desktop_config.json (or your MCP settings):
{
"mcpServers": {
"calcnook": {
"command": "uvx",
"args": ["calcnook-mcp"]
}
}
}Cursor
{
"mcpServers": {
"calcnook": {
"command": "uvx",
"args": ["calcnook-mcp"]
}
}
}Goose / Continue
Use the same JSON block in the respective mcp_servers config section.
Tools
| Tool | What it does | Example query |
|---|---|---|
calculate_compound_interest | Future value of a lump-sum at compound interest | "What will ₹1L grow to in 10 years at 7%?" |
calculate_sip_dca | SIP (India) / DCA (global) with optional annual step-up | "SIP ₹5000/month for 15 years at 12%" |
calculate_loan_payment | EMI / mortgage amortization with optional extra payment | "EMI for ₹30L home loan at 8.5% for 20 years" |
calculate_retirement | Corpus needed, monthly SIP to reach corpus, safe withdrawal (4% rule) | "How much SIP to reach 2Cr in 20 years?" |
calculate_bmi_bmr_tdee | BMI + WHO category, BMR (Mifflin-St Jeor), TDEE | "BMI for 70kg 175cm" |
convert_currency | Convert between any currencies using caller-supplied rates | "Convert $1000 to INR at 83.5" |
format_currency_amount | Format amount as currency string; INR supports lakh/crore | "Show 25000000 as crores" |
calculate_zakat | Zakat al-Mal (2.5% wealth obligation): all asset categories, nisab check | "Zakat on $25k savings + $5k stocks" |
calculate_islamic_financing | Murabaha, Ijarah, or Mudarabah financing calculator | "Murabaha for $100k house at 30% markup over 5 years" |
calculate_hajj_savings | Monthly savings needed to fund Hajj by target year | "Save monthly for Hajj costing $8000 in 5 years" |
screen_halal_stock | AAOIFI Sharia compliance screen (debt, cash, receivables, haram revenue ratios) | "Is this tech stock halal given these financials?" |
calculate_income_tax | Federal/national income tax for US, UK, CA, AU, India (2026) | "India income tax on ₹12L new regime" |
calculate_us_retirement_account | Traditional 401(k) contribution analysis or Roth IRA phase-out check | "Am I eligible for Roth IRA at $155k income?" |
calculate_eosg | End of Service Gratuity for UAE or Saudi Arabia | "UAE gratuity for 7 years at AED 8000 basic salary" |
calculate_vat | VAT for UAE (5%) or Saudi Arabia (15%) | "UAE VAT on AED 1000 product" |
calculate_saudi_zakat_citizen | ZATCA-collected Zakat estimate for Saudi/GCC nationals (2.5% of base) | "Saudi corporate zakat on SAR 1M base" |
calculate_india_electricity_bill | India electricity bill with BESCOM/MSEB/BSES presets or custom slabs | "BESCOM bill for 250 units in Bangalore" |
Built on
calcnook engine — the open-source personal finance calculation library.
DISCOM presets (BESCOM_RESIDENTIAL, MSEB_RESIDENTIAL, BSES_RESIDENTIAL) are importable directly from calcnook.countries.india.electricity_bill for custom slab configuration.
License
MIT
Frequently asked questions
What is Calcnook MCP Server?
Personal finance calculators for seven countries plus Islamic finance: income tax, loans, retirement, VAT, Zakat, Murabaha, Ijarah and halal stock screening.
How do I install Calcnook MCP Server?
Follow the installation steps in its documentation, shown on this page and in its repository.
Is Calcnook MCP Server open source?
Yes. Its code is on GitHub under the MIT license.
Who maintains Calcnook MCP Server?
It is published by Declan142. AI.tn lists it but does not maintain or endorse it.
From the community awesome-mcp-servers lists and the project's GitHub repository. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.