Jackpot Calculator
Estimate US lottery taxes, compare cash and annuity, split pool prizes and calculate jackpot odds.
Connect it
Settings → Connectors → Add custom connector
URL: https://jackpot-calculator-mcp.jiankn.workers.dev/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://jackpot-calculator-mcp.jiankn.workers.dev/mcp{
"mcpServers": {
"jackpot-calculator": {
"url": "https://jackpot-calculator-mcp.jiankn.workers.dev/mcp"
}
}
}claude mcp add --transport http jackpot-calculator https://jackpot-calculator-mcp.jiankn.workers.dev/mcp{
"servers": {
"jackpot-calculator": {
"type": "http",
"url": "https://jackpot-calculator-mcp.jiankn.workers.dev/mcp"
}
}
}4 tools, verified live
calculate_lottery_payoutread-onlyEstimate taxes and withholding on a known lottery cash prize. Input dollars; result integer cents. Bundled 2026 rules.
compare_lump_sum_annuityread-onlyCompare a published cash option with 30 growing annuity payments after taxes, including present value and break-even rate.
calculate_pool_shareread-onlyEstimate one equal memberâs cash prize, taxes and withholding. Each member is assumed to have the specified tax profile.
calculate_lottery_oddsread-onlyCalculate jackpot coverage for distinct combinations in one drawing and optional before-tax expected ticket return.
Alternatives in Finance & Payments
Compare →
Beancount.ioA
Query, edit, and reconcile a hosted Beancount ledger: BQL, reports, files, and bank imports.
PAPayqrA
European payment QR — SPAYD (CZ/SK) & EPC/GiroCode (SEPA), plus text/WiFi/vCard. Local, free.
ADAdisA
Czech VAT-payer reliability (ADIS / nespolehlivý plátce DPH) + registered bank accounts by DIČ.
CNCnbA
Official ČNB exchange rates — daily & historical CZK vs EUR, USD, 30+ currencies. For accounting.
ISIsirA
Czech insolvency register (ISIR) — active/historical insolvency & bankruptcy by IČO or person.
OPOpenAccountantsA
Open-source AI accounting skills verified by licensed accountants (tax, VAT, payroll).