Finance Toolkit
500+ transparent financial methods calculated from raw statements, not third-party endpoints.
电脑或云端
Jackpot Calculator
概览
作者提供的说明（英文原文）
Estimate US lottery taxes, compare cash and annuity, split pool prizes and calculate jackpot odds.
PopNx MCP 的三大支柱
这三项永远不会合并成一个分数：意见、测量和人气是不同的东西。
- 用户评价i暂无评价评价功能将在后续阶段与账户功能一起开放
- 我们的基础检查i3 项中通过 3 项依据公开信息检查；尚未扫描代码
- 使用情况i非常新★ –
它能帮你做什么
我们还没有为它写通俗的介绍。下面是我们从注册中心读取到的事实。
- 连接方式: 在云端运行
- 传输方式: Streamable HTTP
- 分类: 会计、财务与税务
安装
选择你使用的 AI 应用，然后复制设置。
安装之前
- 基础检查：3 项中通过 3 项
- 在作者的服务器上运行：你向它提出的内容会经过他们的服务器。
- 可以做 4 件事（工具） calculate_lottery_payout, compare_lump_sum_annuity, calculate_pool_share, calculate_lottery_odds
- 注册中心没有列出需要填写的密钥。
你需要
- 在云端运行无需安装任何东西，通过互联网连接
你用的是哪个应用？
在上方选择你的应用。我们会记住它，下次按钮会显示“安装到 …”。
适用于网页版、桌面版和手机版 Claude：
- 打开 Settings → Connectors
- 点击 Add custom connector
- 粘贴下面的地址，然后点击 Add
- 如果要求登录，请登录作者的服务
https://jackpot-calculator-mcp.jiankn.workers.dev/mcp在终端中运行这条命令
claude mcp add --transport http jackpot-calculator https://jackpot-calculator-mcp.jiankn.workers.dev/mcp或者自己复制设置
粘贴到项目中的 .cursor/mcp.json，或 ~/.cursor/mcp.json
{
"mcpServers": {
"jackpot-calculator": {
"url": "https://jackpot-calculator-mcp.jiankn.workers.dev/mcp"
}
}
}浏览器会先询问是否打开应用，然后应用会显示设置并请你确认。密钥的值会留空，由你自己填写。
或者自己复制设置
粘贴到项目中的 .vscode/mcp.json
{
"servers": {
"jackpot-calculator": {
"type": "http",
"url": "https://jackpot-calculator-mcp.jiankn.workers.dev/mcp"
}
}
}浏览器会先询问是否打开应用，然后应用会显示设置并请你确认。密钥的值会留空，由你自己填写。
ChatGPT 只能连接互联网上的服务器：
- 打开网页版 ChatGPT → Settings → Connectors (Apps)
- 点击 Create 或 Add（部分套餐需要先在 Advanced 中开启 Developer mode）
- 粘贴下面的地址，起个名字，然后保存
- 如果要求登录，请登录作者的服务
https://jackpot-calculator-mcp.jiankn.workers.dev/mcp菜单名称可能因套餐和版本不同而略有差异。
你的选择通过 Cookie 保存在这台设备上，无需账户。
这些设置是根据作者在注册中心的条目生成的。如果 README 的写法不同，请以 README 为准。
它能做什么
工具名称和描述与服务器在 2026年11月8日 报告的完全一致。这些内容由作者撰写，不是我们写的；我们以纯文本形式显示。
calculate_lottery_payoutEstimate taxes and withholding on a known lottery cash prize. Input dollars; result integer cents. Bundled 2026 rules.
compare_lump_sum_annuityCompare a published cash option with 30 growing annuity payments after taxes, including present value and break-even rate.
calculate_pool_shareEstimate one equal member’s cash prize, taxes and withholding. Each member is assumed to have the specified tax profile.
calculate_lottery_oddsCalculate jackpot coverage for distinct combinations in one drawing and optional before-tax expected ticket return.
基础检查i
我们检查的是任何人都能看到的信息；我们没有阅读代码。不适用的检查项不计入总数。 · 检查于 2026年11月8日
- ✓ 通过
作者与仓库一致
注册名称已通过 GitHub 账户 jiankn 验证，该账户拥有此仓库
- … 尚未检查
仍在维护
我们还没有从 GitHub 读取这个仓库
- … 尚未检查
有许可证
我们还没有从 GitHub 读取这个仓库
- ✓ 通过
端点有响应
在 190 毫秒内响应（HTTP 200）
- – 不适用
使用 OAuth 登录
无需登录
- ✓ 通过
工具描述中没有隐藏指令
已读取 4 个工具描述，未发现针对 AI 的隐藏指令
与“会计、财务与税务”中的其他服务器比较i
- 星标数多于此分类中其他 2932 个服务器的 0%
- 发布到注册中心的时间比此分类中其他 2932 个服务器的 56% 更新
- 基础检查结果等于或优于此分类中其他 2932 个服务器的 100%
与注册中心里这个分类中所有活跃的服务器比较。只有当发布者拥有该仓库时，星标数才计入。
常见问题
Jackpot Calculator 安全吗？
它在 3 项适用的基础检查中通过了 3 项。我们没有阅读代码。在添加密钥或令牌之前，请先看看这个服务器要求哪些权限，并使用只具备所需权限的密钥。
它需要哪些密钥或代码？
注册中心没有列出必需的密钥，不过有些服务器会在首次使用时要求你登录。
它在我的电脑上运行还是在云端？
它在作者的云端运行。通过互联网连接，无需安装，但你发送的内容会经过作者的服务器。
它还在维护吗？
GitHub 仓库最后更新于–，最新版本（0.1.0）于25天前进入注册中心。
哪些应用可以使用它？
支持 MCP 的应用，例如 Claude Desktop、Claude Code、Cursor 和 VS Code。它通过 URL 连接，所以接受远程 MCP 服务器的应用也可以使用，例如开启开发者模式的 ChatGPT。
有什么可以替代它？
同一分类中有：Finance Toolkit, SolidInvoice, Korea Tax Calculator
替代选择
同一分类中其他作者的服务器，按星标数排序。
如何看卡片：↓ 每周下载量i★ GitHub 星标i三大支柱：评价 · 检查 · 使用情况i更新 = 最新版本发布到注册中心的时间i
SolidInvoice
Create and send invoices and quotes, manage clients, and track payments in SolidInvoice.
在云端运行✓ solidinvoice.co
Korea Tax Calculator
Korean tax calculation and tax-audit judgment MCP: 96 tools with statutory citations.
在你的电脑上运行
作者的 README
打开 README
按原文从作者的仓库复制。PopNx MCP 没有审查或背书其内容。HTML、图片和脚本已被移除。链接会离开本站。
Jackpot Calculator MCP
Four read-only MCP tools for US lottery prize taxes, cash vs annuity comparisons, equal pool shares and jackpot probabilities. Calculations use a fixed 2026 data snapshot and the same engine as Jackpot Calculator.
Connect to the hosted server
Add this Streamable HTTP URL in a client that supports remote MCP servers:
https://jackpot-calculator-mcp.jiankn.workers.dev/mcpNo API key is required. The public endpoint allows up to 120 requests per minute per IP at the Cloudflare edge; rate limiting is approximate, not a global quota. Connection examples and output units: Jackpot Calculator MCP setup.
Tools
| Tool | Required inputs | Output |
|---|---|---|
calculate_lottery_payout | prize, stateCode | Estimated final tax, withholding and cash take-home |
compare_lump_sum_annuity | jackpot, cashValue, stateCode | Cash and 30-payment annuity, discounted present value and break-even rate |
calculate_pool_share | prize, members, stateCode | One equal owner's share with the whole-ticket withholding threshold |
calculate_lottery_odds | game | Distinct-combination jackpot probability; optional expected return with jackpotCash |
Money inputs are US dollars. Tax/payout results use integer cents. The odds tool reports money in dollars. Rates and probabilities are fractions, so 0.04 is 4%. Each result states its units, assumptions and related calculator.
Example tool call:
{"name": "calculate_lottery_payout", "arguments": { "prize": 1000000, "stateCode": "TX", "status": "single" } }
The bundled 2026 calculation returns an estimated $320,000 final federal tax and $680,000 take-home, separately from $240,000 federal withholding. See the interactive lottery tax calculator to explore other states and filing statuses.
For game-specific cash estimates, select game: "powerball" or game: "megaMillions", provide the known cash prize and compare it with the Powerball payout calculator or Mega Millions tax calculator. For annuities provide both the published cash option and advertised annuity total; the package never guesses the cash option from a fixed percentage.
Run locally from the source or release archive
Node.js 22.12 or newer is required.
git clone https://github.com/jiankn/jackpot-calculator-mcp.gitcd jackpot-calculator-mcp npm ci npm test node src/cli.mjs
The last command starts an MCP stdio server and waits for a client; it is not an interactive CLI prompt. Configure a stdio client with command: "node" and args: ["/absolute/path/to/jackpot-calculator-mcp/src/cli.mjs"]. Only protocol messages go to stdout.
Release archives can also be installed with npm install ./jackpot-calculator-mcp-0.1.0.tgz. An npm registry listing is optional and is not needed for the hosted endpoint.
Calculation boundaries
- US resident taxpayers, same residence and ticket-purchase state; cross-state credits and nonresident alien withholding are not modeled.
- Federal and state tax data is bundled, with original source URLs and dates. No live jackpot lookup, automatic tax update, ticket purchase or ticket check.
- Standard deduction and incremental income tax. State head-of-household uses single-filer state brackets. California assumes a California Lottery prize.
- NYC and Yonkers need an explicit
localitywithstateCode: "NY". Maryland uses an average county rate; other local income taxes are excluded. - Annuities use 30 payments, first immediately and then annual payments growing 5%. Tax rules and other income stay constant. Future tax law and investment taxes are not modeled. Annuity methodology and calculator.
- Pool outputs assume all members have the same tax profile. Different people need separate scenarios. Individually rounded fractional-cent shares can differ slightly from the whole prize.
- Odds assume distinct combinations in one drawing. Expected value excludes taxes, Power Play, jackpot sharing and California pari-mutuel payout differences.
Estimates only, not tax or financial advice. Independent of Powerball, Mega Millions, the Multi-State Lottery Association and state lottery operators. Sources and methodology.
Development and releases
npm test checks known payouts, validation, pool withholding, annuity totals, odds and real stdio/HTTP protocol calls. npm run verify:package packs the allowlisted files, installs the archive into a clean directory and invokes the installed server. CI runs both on Windows and Linux.
scripts/sync-engine.mjs is a maintainer-only snapshot step run within the website checkout, before release. It records source hashes in PROVENANCE.md. Standalone users already have the copied files and do not need to run it.
Code: MIT. Compiled data: CC BY 4.0; see LICENSE-DATA.md and the source URLs inside data/. Issues: https://github.com/jiankn/jackpot-calculator-mcp/issues