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Jackpot Calculator

by io.github.jiankn
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Server Details

Estimate US lottery taxes, compare cash and annuity, split pool prizes and calculate jackpot odds.

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Status
Healthy
Last Tested
Transport
Streamable HTTP · MCP 2025-11-25
URL
Repository
jiankn/jackpot-calculator-mcp
GitHub Stars
0

TDQS

Score is being calculated.

Available Tools

4 tools
calculate_lottery_oddsJackpot probability and expected return
Read-onlyIdempotent
Inspect

Calculate jackpot coverage for distinct combinations in one drawing and optional before-tax expected ticket return.

ParametersJSON Schema
NameRequiredDescriptionDefault
gameYes
ticketsNoDifferent number combinations in the SAME drawing; repeated combinations do not add coverage.
jackpotCashNoOptional jackpot cash option in US dollars, required to compute expected ticket return.
calculate_lottery_payoutLottery cash prize after taxes
Read-onlyIdempotent
Inspect

Estimate taxes and withholding on a known lottery cash prize. Input dollars; result integer cents. Bundled 2026 rules.

ParametersJSON Schema
NameRequiredDescriptionDefault
gameNocustom
prizeYesUS dollars, not cents. Maximum $1 trillion.
statusNosingle
localityNoOnly valid with stateCode NY.
stateCodeYesUS residence and ticket-purchase state, two-letter code. Cross-state claims are not modeled.
otherIncomeNoOther annual income in US dollars before the standard deduction.
calculate_pool_shareEqual lottery pool shares
Read-onlyIdempotent
Inspect

Estimate one equal member’s cash prize, taxes and withholding. Each member is assumed to have the specified tax profile.

ParametersJSON Schema
NameRequiredDescriptionDefault
gameNocustom
prizeYesWhole ticket cash prize in US dollars.
statusNosingle
membersYesEqual owners of one ticket. Result assumes every member has the specified tax profile.
localityNoOnly valid with stateCode NY.
stateCodeYesUS residence and ticket-purchase state, two-letter code. Cross-state claims are not modeled.
otherIncomeNoOther annual income in US dollars before the standard deduction.
compare_lump_sum_annuityCompare cash and annuity
Read-onlyIdempotent
Inspect

Compare a published cash option with 30 growing annuity payments after taxes, including present value and break-even rate.

ParametersJSON Schema
NameRequiredDescriptionDefault
gameNocustom
statusNosingle
jackpotYesAdvertised annuity total in US dollars.
winnersNoNumber of jackpot-winning tickets sharing the prize.
localityNoOnly valid with stateCode NY.
cashValueYesPublished cash option in US dollars; do not infer it from a fixed ratio.
stateCodeYesUS residence and ticket-purchase state, two-letter code. Cross-state claims are not modeled.
otherIncomeNoOther annual income in US dollars before the standard deduction.
discountRateNoAnnual discount rate as a fraction, e.g. 0.04 for 4%.
sharePercentNoYour percentage of one winning ticket.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

  1. 4 tool updates
    • First observedcalculate_lottery_odds
    • First observedcalculate_lottery_payout
    • First observedcalculate_pool_share
    • First observedcompare_lump_sum_annuity

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