FreeToolHub

io.github.cavan1977由 GitHub 帳號 cavan1977 發布v2.0.0更新於 Oct 27, 2026

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

已驗證Streamable HTTP可網頁執行金融開發者工具商業與電商

概覽

AI 產生的概覽

遠端 MCP 伺服器，提供 44 個計算器，涵蓋美國稅務、個人理財、商業成本以及 MCP 伺服器工程與安全，供 AI 助理呼叫。

可以做什麼
  • 進行美國稅務估算：自雇稅、自由工作者稅、1099-K、資本利得、薪資稅、遺產稅、季度預繳、退稅、W-2 與 1099 比較及加薪實際收益
  • 規劃個人財務：房貸、車貸、學貸、複利、退休、401(k) 與 Roth 比較、壽險需求、房屋淨值、出租房 ROI 與租金可負擔性
  • 試算商業與行銷數據：銷售稅率、經濟關聯、關稅、LLC 成本、代發貨與轉售利潤、自由工作者報價、利潤率、損益兩平與廣告 ROI
  • 稽核 MCP 伺服器：估算上下文視窗 token 佔用、壓縮工具定義、評估可信度、依 OWASP MCP Top 10 檢查，並產生或驗證 Server Card
  • 針對工具組合提供保留、合併或移除的建議
適用情境
當你希望助理快速給出美國稅務、貸款、投資或小型企業成本估算而不必自行計算時適用；在建置與審查 MCP 伺服器、需要檢查上下文預算、可信度、安全性或 Server Card 時也適用。
執行需求
遠端 streamable HTTP 端點，無需本機安裝或套件。不需帳號：每個 IP 每天免費 50 次工具呼叫，可選擇提供 X-API-Key 標頭以提高配額。
安裝前請注意
稅務、貸款與商業數字是根據伺服器從 CDN 取得的資料所做的估算，不構成專業稅務或財務建議，且如所述 2026 年遺產稅免稅額等規則可能變動。可選的 X-API-Key 標頭屬於機密，應避免寫入共用設定。你送出的內容（例如 MCP 設定與伺服器資訊）會傳送給第三方服務。

安裝

在 SourceWeft 中

  1. 開啟 儀表板中的 FreeToolHub，將其新增到工作區。
  2. 為需要使用其工具的對話啟用該服務。

Web executable，透過 Streamable HTTP。 遠端服務在工作區中設定後即可從網頁執行環境執行。

交給代理程式安裝

把這段提示詞貼上到 Claude Code、Codex、Cursor 等代理程式，或 SourceWeft 對話中。代理程式會讀取該伺服器的安裝指南，先向你展示發布者、端點和登入方式，經你同意後再把它新增到你的客戶端。金鑰不會寫進任何命令。

閱讀 https://sourceweft.com/mcp/io.github.cavan1977%2Ffreetoolhub/install.md，並按其中說明把這個 MCP 伺服器接入我的客戶端。修改任何設定之前，先告訴我它的發布者、端點和登入方式，等我確認。不要把 API 金鑰寫進命令或我會提交的檔案；問我金鑰應從哪裡取得。

檢視代理程式所依據的安裝指南

其他 MCP 客戶端

把它新增到你客戶端的 mcpServers 設定中。

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

README

該儲存庫沒有 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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數state必填amount

calculate_payroll_tax

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

輸入參數stategrossSalary必填filingStatusretirementContribution

calculate_estate_tax

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

輸入參數estateValue必填spousalInheritance

calculate_hsa_fsa_savings

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

輸入參數statefilingStatusmarginalRatefsaContributionhsaContribution

calculate_quarterly_tax

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

輸入參數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.

輸入參數totalSales必填statesWithSales

calculate_tariff

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

輸入參數freightcategorytariffRateproductValue必填

calculate_compound_interest

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

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數loanAmount必填extraPaymentinterestRate必填loanTermYears

calculate_roi

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

輸入參數cost必填clicksadSpendrevenue必填conversions

calculate_life_insurance

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

輸入參數debtsavingschildrenmortgagecollegeFundannualIncome必填yearsToReplace

calculate_rental_affordability

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

輸入參數monthlyDebtsmonthlyIncome必填

calculate_home_equity

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

輸入參數homeValue必填interestRateloanTermYearsmortgageBalance必填

calculate_break_even

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

輸入參數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.

輸入參數stateyears

calculate_dropship_profit

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

輸入參數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.

輸入參數statesalePrice必填shippingCostpurchasePrice必填

calculate_freelancer_pricing

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

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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.

輸入參數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?".

輸入參數servers必填avgTokensPerToolreserveForOutputconversationShare

版本歷史

1
  1. v2.0.0最新Sep 16, 2026

評分

已滿足適用檢查項的 75%

該評分衡量此收錄條目的完整程度，依據註冊中心條目、端點與公開來源計算得出。它不是對伺服器本身的評價，也不表示伺服器安全或目前可用：可連通性是帶日期的檢查結果，評分也不包含安裝量或使用者評價。

  • 近 30 天內可連通必需25 分
  • 已宣告認證方式必需10 分
  • 已列出工具必需15 分
  • 描述必需15 分
  • 圖示10 分
  • 文件15 分

    請宣告包含 README 的 GitHub 儲存庫，或在 OAuth 受保護資源後設資料中提供 resource_documentation。

  • 授權條款10 分

    請在儲存庫或註冊中心條目中宣告授權條款。