MCP server

FreeToolHub

io.github.cavan1977/freetoolhub

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

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

Website Source

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

50

Token cost

About 9,717 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http freetoolhub https://freetoolhub.org/api/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.freetoolhub]
url = "https://freetoolhub.org/api/mcp"

Gemini CLI

{"mcpServers":{"freetoolhub":{"httpUrl":"https://freetoolhub.org/api/mcp"}}}

Cursor

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

VS Code

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

Antigravity

agy mcp add freetoolhub https://freetoolhub.org/api/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"freetoolhub","server_url":"https://freetoolhub.org/api/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"freetoolhub","server_url":"https://freetoolhub.org/api/mcp"}

Tools

• advise_tool_portfolio ~159 tokens
  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.
• audit_mcp_server_security ~362 tokens
  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.
• calculate_1099k_tax ~183 tokens
  Estimate tax on 1099-K income (reselling, gig work). SE tax, QBI, quarterly 1040-ES. Uses latest CDN data.
• calculate_break_even ~150 tokens
  Break-even point: units to sell to cover fixed costs. Contribution margin, target profit analysis.
• calculate_capital_gains_tax ~218 tokens
  US capital gains tax on stock/crypto. Short vs long-term, NIIT 3.8%, state tax. Uses latest CDN LTCG brackets.
• calculate_car_loan ~211 tokens
  Monthly car payment, total interest, amortization. Includes sales tax, trade-in, down payment. Uses latest CDN sales tax rates.
• calculate_compound_interest ~183 tokens
  Compound interest with monthly contributions. Returns final balance, total interest, inflation-adjusted value. Uses latest CDN inflation rate.
• calculate_dropship_profit ~200 tokens
  True dropshipping profit after product cost, platform fees, payment processing, ad spend. Uses latest CDN payment processor fees.
• calculate_estate_tax ~108 tokens
  Calculate federal estate tax. 2026 exemption $13.61M, 40% rate. Includes marital deduction.
• calculate_freelancer_pricing ~149 tokens
  Turn hourly rate into project quote with overhead, profit margin, milestone splits.
• calculate_freelancer_tax ~175 tokens
  Complete freelancer tax: SE tax, QBI deduction, federal + state income tax. Returns quarterly payment. Uses latest CDN data.
• calculate_github_actions_cost ~255 tokens
  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.
• calculate_home_equity ~149 tokens
  Calculate home equity, max borrowable amount (HELOC), and monthly payments. LTV limits included.
• calculate_hsa_fsa_savings ~193 tokens
  Calculate tax savings from HSA and FSA contributions. Federal + FICA + state tax savings. Latest CDN limits.
• calculate_income_tax ~209 tokens
  US income tax for 2026: federal tax bracket by bracket, state tax, marginal vs effective rate. Uses latest IRS brackets from CDN data.
• calculate_life_insurance ~210 tokens
  Calculate life insurance needs using DIME method: Debt, Income, Mortgage, Education.
• calculate_loan ~151 tokens
  Any fixed-rate loan: monthly payment, total interest, payoff time, and interest saved by extra monthly payments.
• calculate_margin ~191 tokens
  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.
• calculate_mortgage ~197 tokens
  Monthly mortgage payment (P&I) + property tax, insurance, PMI. Full PITI breakdown. Uses latest CDN mortgage rates for defaults.
• calculate_pay_raise Moves money · ~250 tokens
  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.
• calculate_payroll_tax ~172 tokens
  Calculate paycheck deductions: federal tax, Social Security, Medicare, state tax. All 50 states. Latest CDN data.
• calculate_quarterly_tax ~172 tokens
  Calculate quarterly estimated tax payments (Form 1040-ES). SE tax + income tax divided by 4. Latest CDN data.
• calculate_rental_affordability ~99 tokens
  How much rent can you afford? 30% rule, DTI ratio, comfortable rent range.
• calculate_rental_roi ~192 tokens
  Rental property ROI: cap rate, cash-on-cash return, NOI, annual cash flow. Includes vacancy and management.
• calculate_reseller_profit ~149 tokens
  Compare real profit across reselling platforms (eBay, Poshmark, Mercari, etc.) after fees. Uses latest CDN platform fee data.
• calculate_retirement ~325 tokens
  Retirement projection in today's dollars: projected nest egg, sustainable income at your withdrawal rate, gap, and the monthly contribution that closes it.
• calculate_roi ~149 tokens
  ROI, ROAS, net profit, CPA, CPC for marketing campaigns. Facebook, Google, TikTok ad analysis.
• calculate_se_tax ~147 tokens
  Calculate US self-employment tax (15.3%), QBI deduction, quarterly payments. Uses latest IRS brackets from CDN data.
• calculate_student_loan ~143 tokens
  Student loan payoff: monthly payment, total interest, months saved with extra payments.
• calculate_tariff ~139 tokens
  Estimate import duties and landed cost by HS code category. Covers US MFN + Section 301 tariffs.
• calculate_tax_refund Moves money · ~273 tokens
  Estimate US tax refund or balance due before filing: tax owed minus withholding minus credits, federal and state. NOT the IRS refund tracker.
• check_economic_nexus ~113 tokens
  Check which US states you have economic nexus in for sales tax collection. Based on Wayfair ruling. Latest CDN thresholds.
• compare_401k_vs_roth ~212 tokens
  Compare 401(k) pre-tax vs Roth IRA post-tax. 30-year growth, tax drag, recommendation. Uses latest CDN contribution limits.
• compare_ai_coding_tool_costs ~234 tokens
  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.
• compare_automation_platform_costs ~170 tokens
  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.
• compare_llc_cost ~112 tokens
  Compare LLC formation and maintenance costs across US states. 5-year total cost. Uses latest CDN LLC state fees data.
• compare_llm_api_costs ~281 tokens
  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.
• compare_w2_vs_1099 ~173 tokens
  Compare take-home pay: W-2 salary vs 1099 contractor rate. SE tax, FICA, standard deduction, state tax. Latest CDN data.
• compress_tool_definitions ~144 tokens
  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.
• detect_polling_cost_traps ~173 tokens
  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.
• estimate_mcp_context_budget ~237 tokens
  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.
• estimate_selfhosted_tco ~239 tokens
  Compare paying hosted CI overage against running self-hosted runners, including the maintenance hours people forget to cost. Reports the true break-even volume.
• find_tool ~152 tokens
  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.
• generate_mcp_client_config ~250 tokens
  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.
• generate_mcp_server_card ~269 tokens
  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.
• get_sales_tax_rate ~107 tokens
  Get state sales tax rate for any US state. Returns base state rate + estimated local rate. Latest CDN data.
• plan_context_window_budget ~288 tokens
  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?".
• plan_mcp_token_budget ~236 tokens
  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.
• score_mcp_server_trust ~298 tokens
  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.
• validate_mcp_server_card ~166 tokens
  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 li

Browse

• GitHub tools
• Website monitoring
• Payments
• Invoicing and accounting
• GitHub and code hosting

Related MCP servers

• Calcgrid
  China working-day data, UK bank holidays, IANA time zones and deterministic business deadlines.
• Tollbooth
  37 paid x402 MCP tools for OSINT, prediction markets, web intel, and agent security on Base USDC.
• MaCalculatriceEnLigne
  Calculatrices francaises : salaire net, SMIC, impots, bareme kilometrique, TVA, conversions.
• Eng Leadership Toolkit
  Engineering leadership benchmarks, 1:1 playbooks, developer value calculator. 3,662 sessions.
• Gapup
  271 agent-payable tools: competitive intel, finance, KYC, compliance, ESG. x402 per-call.
• MonsiTools Calculators
  Find and run exact business, finance and SaaS calculators instead of guessing the math.
• AgentsToolsHub
  156 paid-per-call JSON APIs for AI agents over x402: calculators, live data, crypto, security, dev.
• Switchboard Finance
  Australian business loans: ATO debt, caveat, equipment, property. Check fit, then a broker calls.

Badge for your README

[![AptLynx](https://aptlynx.net/badge/io.github.cavan1977/freetoolhub.svg)](https://aptlynx.net/servers/io.github.cavan1977/freetoolhub)

Listing text is written by the maker; AptLynx lists tools and does not vouch for them. Find another tool · Browse by topic · For agents