FreeToolHub is a remote MCP server that gives an AI agent 44 tools, among them advise_tool_portfolio, audit_mcp_server_security, calculate_1099k_tax. It answers at https://freetoolhub.org/api/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 4 of 4 times since 15 September 2026; the last check, on 19 October 2026, succeeded.
44 calculators for AI agents: US tax, finance, business + an MCP engineering & security suite.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
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. Inputs: tools, targetToolCount |
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. Inputs: serverName, hasAuthentication, usesStdioTransport, performsFileOperations, executesCommands, hasHardcodedSecrets |
calculate_1099k_tax | Estimate tax on 1099-K income (reselling, gig work). SE tax, QBI, quarterly 1040-ES. Uses latest CDN data. Inputs: grossReceipts, costOfGoodsSold, otherExpenses, filingStatus, state |
calculate_break_even | Break-even point: units to sell to cover fixed costs. Contribution margin, target profit analysis. Inputs: fixedCosts, pricePerUnit, variableCostPerUnit, targetProfit |
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. Inputs: purchasePrice, salePrice, holdingPeriodDays, filingStatus, ordinaryIncome, state |
calculate_car_loan | Monthly car payment, total interest, amortization. Includes sales tax, trade-in, down payment. Uses latest CDN sales tax rates. Inputs: price, downPayment, tradeIn, interestRate, loanTermMonths, salesTaxRate |
calculate_compound_interest | Compound interest with monthly contributions. Returns final balance, total interest, inflation-adjusted value. Uses latest CDN inflation rate. Inputs: principal, monthlyContribution, annualRate, years, inflationRate |
calculate_dropship_profit | True dropshipping profit after product cost, platform fees, payment processing, ad spend. Uses latest CDN payment processor fees. Inputs: salePrice, productCost, adSpendPerOrder, shippingCost, platform, paymentProcessor |
calculate_estate_tax | Calculate federal estate tax. 2026 exemption $13.61M, 40% rate. Includes marital deduction. Inputs: estateValue, spousalInheritance |
calculate_freelancer_pricing | Turn hourly rate into project quote with overhead, profit margin, milestone splits. Inputs: hourlyRate, projectHours, overheadPct, profitMarginPct |
calculate_freelancer_tax | Complete freelancer tax: SE tax, QBI deduction, federal + state income tax. Returns quarterly payment. Uses latest CDN data. Inputs: grossIncome, businessExpenses, filingStatus, state |
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. Inputs: linuxMinutes, windowsMinutes, macosMinutes, plan, publicRepo |
calculate_home_equity | Calculate home equity, max borrowable amount (HELOC), and monthly payments. LTV limits included. Inputs: homeValue, mortgageBalance, interestRate, loanTermYears |
calculate_hsa_fsa_savings | Calculate tax savings from HSA and FSA contributions. Federal + FICA + state tax savings. Latest CDN limits. Inputs: hsaContribution, fsaContribution, filingStatus, state, marginalRate |
calculate_life_insurance | Calculate life insurance needs using DIME method: Debt, Income, Mortgage, Education. Inputs: annualIncome, yearsToReplace, debt, mortgage, collegeFund, children |
calculate_mortgage | Monthly mortgage payment (P&I) + property tax, insurance, PMI. Full PITI breakdown. Uses latest CDN mortgage rates for defaults. Inputs: homePrice, downPayment, interestRate, loanTermYears, propertyTaxRate, insuranceRate |
calculate_payroll_tax | Calculate paycheck deductions: federal tax, Social Security, Medicare, state tax. All 50 states. Latest CDN data. Inputs: grossSalary, filingStatus, state, retirementContribution |
calculate_quarterly_tax | Calculate quarterly estimated tax payments (Form 1040-ES). SE tax + income tax divided by 4. Latest CDN data. Inputs: annualIncome, businessExpenses, filingStatus, state |
calculate_rental_affordability | How much rent can you afford? 30% rule, DTI ratio, comfortable rent range. Inputs: monthlyIncome, monthlyDebts |
calculate_rental_roi | Rental property ROI: cap rate, cash-on-cash return, NOI, annual cash flow. Includes vacancy and management. Inputs: propertyValue, monthlyRent, downPayment, interestRate, vacancyRate, managementRate |
calculate_reseller_profit | Compare real profit across reselling platforms (eBay, Poshmark, Mercari, etc.) after fees. Uses latest CDN platform fee data. Inputs: purchasePrice, salePrice, shippingCost, state |
calculate_roi | ROI, ROAS, net profit, CPA, CPC for marketing campaigns. Facebook, Google, TikTok ad analysis. Inputs: revenue, cost, adSpend, clicks, conversions |
calculate_se_tax | Calculate US self-employment tax (15.3%), QBI deduction, quarterly payments. Uses latest IRS brackets from CDN data. Inputs: netEarnings, filingStatus, state |
calculate_student_loan | Student loan payoff: monthly payment, total interest, months saved with extra payments. Inputs: loanAmount, interestRate, loanTermYears, extraPayment |
calculate_tariff | Estimate import duties and landed cost by HS code category. Covers US MFN + Section 301 tariffs. Inputs: productValue, freight, tariffRate, category |
check_economic_nexus | Check which US states you have economic nexus in for sales tax collection. Based on Wayfair ruling. Latest CDN thresholds. Inputs: totalSales, statesWithSales |
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. Inputs: annualContribution, currentTaxRate, retirementTaxRate, annualReturn, years, employerMatch |
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 workloa Inputs: seats, usageLevel, includeApiBaseline, apiModel |
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. Inputs: runsPerMonth, stepsPerRun, workflowCount |
compare_llc_cost | Compare LLC formation and maintenance costs across US states. 5-year total cost. Uses latest CDN LLC state fees data. Inputs: state, years |
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 conte Inputs: inputTokensPerCall, outputTokensPerCall, callsPerMonth, topN, provider, minContextWindow |
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. Inputs: w2Salary, contractorRate, filingStatus, state |
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. Inputs: definitions |
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. Inputs: workflows, platform |
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. Inputs: config, contextWindow, reservedForConversation |
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. Inputs: monthlyMinutes, runnerType, maintenanceHoursPerMonth, engineerHourlyCost, runnerHostingCostPerMonth |
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. Inputs: query, limit |
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. Inputs: serverName, command, args, url, env |
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. Inputs: name, description, version, endpointUrl, transport, tools |
get_sales_tax_rate | Get state sales tax rate for any US state. Returns base state rate + estimated local rate. Latest CDN data. Inputs: state, amount |
plan_context_window_budget, plan_mcp_token_budget, score_mcp_server_trust, validate_mcp_server_card
Every block below points at https://freetoolhub.org/api/mcp. Pick your client and copy.
claude mcp add --transport http freetoolhub https://freetoolhub.org/api/mcp
{
"mcpServers": {
"freetoolhub": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://freetoolhub.org/api/mcp"]
}
}
}{
"mcpServers": {
"freetoolhub": {
"url": "https://freetoolhub.org/api/mcp"
}
}
}{
"servers": {
"freetoolhub": {
"type": "http",
"url": "https://freetoolhub.org/api/mcp"
}
}
}{
"context_servers": {
"freetoolhub": {
"url": "https://freetoolhub.org/api/mcp"
}
}
}{
"mcpServers": {
"freetoolhub": {
"serverUrl": "https://freetoolhub.org/api/mcp"
}
}
}{
"mcpServers": {
"freetoolhub": {
"url": "https://freetoolhub.org/api/mcp"
}
}
}name: FreeToolHub
version: 0.0.1
schema: v1
mcpServers:
- name: FreeToolHub
type: streamable-http
url: https://freetoolhub.org/api/mcp{
"mcpServers": {
"freetoolhub": {
"httpUrl": "https://freetoolhub.org/api/mcp"
}
}
}{
"mcpServers": {
"freetoolhub": {
"type": "http",
"url": "https://freetoolhub.org/api/mcp"
}
}
}{
"mcpServers": {
"freetoolhub": {
"url": "https://freetoolhub.org/api/mcp"
}
}
}goose://extension?url=https%3A%2F%2Ffreetoolhub.org%2Fapi%2Fmcp&type=streamable_http&id=freetoolhub&name=FreeToolHub
It answered our last check on 19 October 2026 in 153 ms. Over 4 checks since 15 September 2026 it answered 4. Status here comes from Neuronto's own probes, not from the publisher.
44, as returned by the server's own tools/list on 24 September 2026: advise_tool_portfolio, audit_mcp_server_security, calculate_1099k_tax, calculate_break_even, calculate_capital_gains_tax, calculate_car_loan, calculate_compound_interest, calculate_dropship_profit, and 36 more.
It answered our last check on 19 October 2026 in 153 ms. Over 4 checks since 15 September 2026 it answered 4.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://freetoolhub.org/api/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.cavan1977. Endpoint host: freetoolhub.org. ARD identifier: urn:air:io.github.cavan1977:mcp:freetoolhub.
First indexed 15 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.