FreeToolHub

io.github.cavan1977由 GitHub 账号 cavan1977 发布v2.0.0更新于 Oct 27, 2026

44 calculators for AI agents: US tax, finance, business + an MCP engineering & security suite.

已验证Streamable HTTP可网页运行金融开发者工具商业与电商

概览

AI 生成的概览

远程 MCP 服务器，提供 44 个计算器，涵盖美国税务、个人理财、商业成本以及 MCP 服务器工程与安全，供 AI 助手调用。

可以做什么
  • 进行美国税务估算：自雇税、自由职业者税、1099-K、资本利得、工资税、遗产税、季度预缴、退税、W-2 与 1099 对比及加薪实际收益
  • 规划个人财务：房贷、车贷、学生贷款、复利、退休、401(k) 与 Roth 对比、寿险需求、房屋净值、出租房 ROI 与租房可负担性
  • 测算商业与营销数据：销售税率、经济关联、关税、LLC 成本、代发货与转售利润、自由职业报价、利润率、盈亏平衡与广告 ROI
  • 审计 MCP 服务器：估算上下文窗口 token 占用、压缩工具定义、评估可信度、按 OWASP MCP Top 10 检查，并生成或校验 Server Card
  • 就工具组合给出保留、合并或删除的建议
适用场景
当你希望助手快速给出美国税务、贷款、投资或小微企业成本估算而不必自行计算时适用；在构建和审查 MCP 服务器、需要检查上下文预算、可信度、安全性或 Server Card 时也适用。
运行要求
远程 streamable HTTP 端点，无需本地安装或软件包。无需账号：每个 IP 每天免费 50 次工具调用，可选提供 X-API-Key 请求头以提高配额。
安装前请注意
税务、贷款和商业数字是基于服务器从 CDN 获取数据的估算，不构成专业税务或财务建议，且如所述 2026 年遗产税免税额等规则可能变化。可选的 X-API-Key 请求头属于机密，应避免写入共享配置。你提交的内容（如 MCP 配置和服务器信息）会发送给第三方服务。

安装

在 SourceWeft 中

  1. 打开 控制台中的 FreeToolHub，将其添加到工作区。
  2. 为需要使用其工具的对话启用该服务。

Web executable，通过 Streamable HTTP。 远程服务在工作区中配置后即可从网页运行时运行。

交给智能体安装

把这段提示词粘贴到 Claude Code、Codex、Cursor 等智能体，或 SourceWeft 对话中。智能体会读取该服务器的安装指南，先向你展示发布者、端点和登录方式，经你同意后再把它添加到你的客户端。密钥不会写进任何命令。

阅读 https://sourceweft.com/mcp/io.github.cavan1977%2Ffreetoolhub/install.md，并按其中说明把这个 MCP 服务器接入我的客户端。修改任何配置之前，先告诉我它的发布者、端点和登录方式，等我确认。不要把 API 密钥写进命令或我会提交的文件；问我密钥应从哪里获取。

查看智能体所依据的安装指南

其他 MCP 客户端

把它添加到你客户端的 mcpServers 配置中。

{
  "mcpServers": {
    "freetoolhub": {
      "type": "http",
      "url": "https://freetoolhub.org/api/mcp"
    }
  }
}

README

该仓库没有 README。

工具

50

calculate_se_tax

Calculate US self-employment tax (15.3%), QBI deduction, quarterly payments. Uses latest IRS brackets from CDN data.

输入参数statenetEarnings必填filingStatus

calculate_freelancer_tax

Complete freelancer tax: SE tax, QBI deduction, federal + state income tax. Returns quarterly payment. Uses latest CDN data.

输入参数stategrossIncome必填filingStatusbusinessExpenses

calculate_1099k_tax

Estimate tax on 1099-K income (reselling, gig work). SE tax, QBI, quarterly 1040-ES. Uses latest CDN data.

输入参数statefilingStatusgrossReceipts必填otherExpensescostOfGoodsSold

calculate_capital_gains_tax

US capital gains tax on stock/crypto. Short vs long-term, NIIT 3.8%, state tax. Uses latest CDN LTCG brackets.

输入参数statesalePrice必填filingStatuspurchasePrice必填ordinaryIncomeholdingPeriodDays必填

compare_w2_vs_1099

Compare take-home pay: W-2 salary vs 1099 contractor rate. SE tax, FICA, standard deduction, state tax. Latest CDN data.

输入参数statew2Salary必填filingStatuscontractorRate必填

get_sales_tax_rate

Get state sales tax rate for any US state. Returns base state rate + estimated local rate. Latest CDN data.

输入参数state必填amount

calculate_payroll_tax

Calculate paycheck deductions: federal tax, Social Security, Medicare, state tax. All 50 states. Latest CDN data.

输入参数stategrossSalary必填filingStatusretirementContribution

calculate_estate_tax

Calculate federal estate tax. 2026 exemption $13.61M, 40% rate. Includes marital deduction.

输入参数estateValue必填spousalInheritance

calculate_hsa_fsa_savings

Calculate tax savings from HSA and FSA contributions. Federal + FICA + state tax savings. Latest CDN limits.

输入参数statefilingStatusmarginalRatefsaContributionhsaContribution

calculate_quarterly_tax

Calculate quarterly estimated tax payments (Form 1040-ES). SE tax + income tax divided by 4. Latest CDN data.

输入参数stateannualIncome必填filingStatusbusinessExpenses

check_economic_nexus

Check which US states you have economic nexus in for sales tax collection. Based on Wayfair ruling. Latest CDN thresholds.

输入参数totalSales必填statesWithSales

calculate_tariff

Estimate import duties and landed cost by HS code category. Covers US MFN + Section 301 tariffs.

输入参数freightcategorytariffRateproductValue必填

calculate_compound_interest

Compound interest with monthly contributions. Returns final balance, total interest, inflation-adjusted value. Uses latest CDN inflation rate.

输入参数years必填principal必填annualRate必填inflationRatemonthlyContribution

calculate_mortgage

Monthly mortgage payment (P&I) + property tax, insurance, PMI. Full PITI breakdown. Uses latest CDN mortgage rates for defaults.

输入参数homePrice必填downPayment必填interestRateinsuranceRateloanTermYearspropertyTaxRate

compare_401k_vs_roth

Compare 401(k) pre-tax vs Roth IRA post-tax. 30-year growth, tax drag, recommendation. Uses latest CDN contribution limits.

输入参数yearsannualReturnemployerMatchcurrentTaxRate必填retirementTaxRate必填annualContribution必填

calculate_car_loan

Monthly car payment, total interest, amortization. Includes sales tax, trade-in, down payment. Uses latest CDN sales tax rates.

输入参数price必填statetradeIndownPaymentinterestRate必填salesTaxRateloanTermMonths

calculate_rental_roi

Rental property ROI: cap rate, cash-on-cash return, NOI, annual cash flow. Includes vacancy and management.

输入参数downPayment必填monthlyRent必填vacancyRateinterestRatepropertyValue必填managementRate

calculate_student_loan

Student loan payoff: monthly payment, total interest, months saved with extra payments.

输入参数loanAmount必填extraPaymentinterestRate必填loanTermYears

calculate_roi

ROI, ROAS, net profit, CPA, CPC for marketing campaigns. Facebook, Google, TikTok ad analysis.

输入参数cost必填clicksadSpendrevenue必填conversions

calculate_life_insurance

Calculate life insurance needs using DIME method: Debt, Income, Mortgage, Education.

输入参数debtsavingschildrenmortgagecollegeFundannualIncome必填yearsToReplace

calculate_rental_affordability

How much rent can you afford? 30% rule, DTI ratio, comfortable rent range.

输入参数monthlyDebtsmonthlyIncome必填

calculate_home_equity

Calculate home equity, max borrowable amount (HELOC), and monthly payments. LTV limits included.

输入参数homeValue必填interestRateloanTermYearsmortgageBalance必填

calculate_break_even

Break-even point: units to sell to cover fixed costs. Contribution margin, target profit analysis.

输入参数fixedCosts必填pricePerUnit必填targetProfitvariableCostPerUnit必填

compare_llc_cost

Compare LLC formation and maintenance costs across US states. 5-year total cost. Uses latest CDN LLC state fees data.

输入参数stateyears

calculate_dropship_profit

True dropshipping profit after product cost, platform fees, payment processing, ad spend. Uses latest CDN payment processor fees.

输入参数platformsalePrice必填productCost必填shippingCostadSpendPerOrder必填paymentProcessor

calculate_reseller_profit

Compare real profit across reselling platforms (eBay, Poshmark, Mercari, etc.) after fees. Uses latest CDN platform fee data.

输入参数statesalePrice必填shippingCostpurchasePrice必填

calculate_freelancer_pricing

Turn hourly rate into project quote with overhead, profit margin, milestone splits.

输入参数hourlyRate必填overheadPctprojectHours必填profitMarginPct

calculate_income_tax

US income tax for 2026: federal tax bracket by bracket, state tax, marginal vs effective rate. Uses latest IRS brackets from CDN data.

输入参数stategrossIncome必填filingStatuspreTaxDeductionsitemizedDeductions

calculate_tax_refund

Estimate US tax refund or balance due before filing: tax owed minus withholding minus credits, federal and state. NOT the IRS refund tracker.

输入参数statecreditsgrossIncome必填filingStatusstateWithheldfederalWithheld必填preTaxDeductionsitemizedDeductions

calculate_loan

Any fixed-rate loan: monthly payment, total interest, payoff time, and interest saved by extra monthly payments.

输入参数principal必填termYears必填interestRate必填extraMonthlyPayment

calculate_retirement

Retirement projection in today's dollars: projected nest egg, sustainable income at your withdrawal rate, gap, and the monthly contribution that closes it.

输入参数currentAge必填inflationPct必填retirementAge必填currentSavings必填annualReturnPct必填withdrawalRatePctdesiredAnnualIncome必填monthlyContribution必填otherRetirementIncome

calculate_margin

Gross margin AND markup for the same deal, plus reverse pricing from a target margin or markup and the real margin cost of a discount.

输入参数cost必填pricemarginPctmarkupPctdiscountPct

calculate_pay_raise

What a raise is actually worth after tax. Runs the real brackets before and after, so bracket crossings are handled — not a flat marginal rate applied to the raise.

输入参数stateraisePctraiseAmountfilingStatuscurrentSalary必填preTaxDeductions

estimate_mcp_context_budget

Estimate how much of an LLM context window your MCP servers consume, and which tool definitions to cut first. Paste your MCP config. Returns per-server token cost, remaining budget, and ranked reduction advice.

输入参数config必填contextWindowreservedForConversation

compress_tool_definitions

Shrink MCP tool descriptions and JSON schemas to cut context cost without changing how agents call them. Returns the compressed definitions plus exact token savings.

输入参数definitions必填

score_mcp_server_trust

Score an MCP server A–F on trustworthiness and maintenance health, so you can choose between four servers that all claim to do the same thing. Supply what you know about the server.

输入参数starsrepoExistsserverNamehasToolDocsnpmDeprecatedhasInstallConfiginOfficialRegistrydaysSinceLastCommit

audit_mcp_server_security

Audit an MCP server against the OWASP MCP Top 10. Reports authentication, path traversal, command injection, secret exposure and supply-chain risk with a concrete remediation list.

输入参数serverNameexecutesCommandshasAuthenticationusesStdioTransporthasHardcodedSecretsperformsFileOperationsrestrictsNetworkEgresshasProvenanceAttestationacceptsUserInputInCommands

generate_mcp_server_card

Generate a SEP-1649 MCP Server Card (/.well-known/mcp/server-card.json) so crawlers and registries can discover your server without connecting to it.

输入参数name必填toolsversiontransportdescription必填endpointUrlrequiresAuth

validate_mcp_server_card

Validate an MCP Server Card against SEP-1649 and report every missing or malformed field before you publish it. Checks structure (serverInfo, transport, capabilities, authentication) and format (semver version, http(s) transport URL, capabilities.tools entries), returning a full error and warning list.

输入参数card必填

advise_tool_portfolio

Too many MCP tools makes agents pick the wrong one. Given your tool list and usage, get keep / merge / remove recommendations to get under the 10–15 tool guideline.

输入参数tools必填targetToolCount

plan_mcp_token_budget

Plan and attribute MCP token spend across agents, servers and workflows — something the protocol provides no native support for. Outputs per-dimension cost split and a quota plan.

输入参数workloads必填monthlyBudgetinputPricePerMillionoutputPricePerMillion

generate_mcp_client_config

Generate ready-to-paste MCP server config for Claude Desktop, Cursor, VS Code and Windsurf from one input. Config completeness decides whether developers can install your server at all.

输入参数envurlargscommandserverName必填

find_tool

Semantic tool router. Given a natural-language intent, return only the most relevant tools from this server so the client can inject 3 schemas instead of 27. This is the "find_tool" meta-tool the MCP optimisation literature calls for.

输入参数limitquery必填

calculate_github_actions_cost

Estimate a GitHub Actions monthly bill using the January 2026 runner rates (Linux $0.006/min, Windows $0.010, macOS $0.062), accounting for plan allowances. Also reports what the same workload cost before the price cut.

输入参数planpublicRepolinuxMinutesmacosMinuteswindowsMinutes

compare_automation_platform_costs

Compare real monthly cost on Zapier (per task) versus Make (per operation) for the same workflow volume, including the counting-model difference that makes the two quotes non-obvious.

输入参数stepsPerRun必填runsPerMonth必填workflowCount

detect_polling_cost_traps

Find the most common hidden cost in no-code automation: using polling where a webhook would do. Quantifies the wasted task/operation quota and the monthly dollars.

输入参数platformworkflows必填

estimate_selfhosted_tco

Compare paying hosted CI overage against running self-hosted runners, including the maintenance hours people forget to cost. Reports the true break-even volume.

输入参数runnerTypemonthlyMinutes必填engineerHourlyCostmaintenanceHoursPerMonthrunnerHostingCostPerMonth

compare_ai_coding_tool_costs

Compare monthly and annual cost of AI coding subscriptions (GitHub Copilot, Cursor, Claude Code/Pro/Max, OpenAI Codex) for a given team size and usage intensity, then compare the winner against pay-as-you-go API pricing for the same workload. Prices verified 2026-09.

输入参数seatsapiModelusageLevelincludeApiBaseline

compare_llm_api_costs

Rank 18 LLM models by the real monthly cost of a given workload (input/output tokens per call × calls per month). Reports the cheapest and most expensive option, the cost spread, and which models can actually hold your prompt in their context window.

输入参数topNprovidercallsPerMonth必填minContextWindowinputTokensPerCalloutputTokensPerCall

plan_context_window_budget

Given a set of MCP servers and their tool counts, show for every model context window (128K, 200K, 1M, 10M) how much of the window the tool definitions consume, how much is left for conversation, and whether the server set fits at all. Answers "how many servers can I attach on model X?".

输入参数servers必填avgTokensPerToolreserveForOutputconversationShare

版本历史

1
  1. v2.0.0最新Sep 16, 2026

评分

已满足适用检查项的 75%

该评分衡量此收录条目的完整程度，依据注册中心条目、端点与公开来源计算得出。它不是对服务器本身的评价，也不表示服务器安全或当前可用：可连通性是带日期的检查结果，评分也不包含安装量或用户评价。

  • 近 30 天内可连通必需25 分
  • 已声明认证方式必需10 分
  • 已列出工具必需15 分
  • 描述必需15 分
  • 图标10 分
  • 文档15 分

    请声明包含 README 的 GitHub 仓库，或在 OAuth 受保护资源元数据中提供 resource_documentation。

  • 许可证10 分

    请在仓库或注册中心条目中声明许可证。