FreeToolHub MCP Server

by cavan1977 Your server? Claim it

answering

FreeToolHub is answering right now. Last checked 7 min ago. It exposes 44 tools.

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

The linked repository no longer exists on GitHub — it was deleted or made private.

Uptime history 67 hours of history

67 hours agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

279 ms

Response time

average over 24h

open, no key

Access

streamable-http

This one has been quiet for a while

Quiet is not dead — but it is worth knowing when it wakes up, or when someone else takes it over. We watch the repository and tell you either way.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 7 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

~/Library/Application Support/Claude/claude_desktop_config.json

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

~/.codex/config.toml

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

.cursor/mcp.json

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

.vscode/mcp.json

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

Available tools 44

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

calculate

calculate_1099k_tax

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

calculate_break_even

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

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.

calculate_car_loan

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

calculate_compound_interest

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

calculate_dropship_profit

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

calculate_estate_tax

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

calculate_freelancer_pricing

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

calculate_freelancer_tax

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

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.

calculate_home_equity

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

calculate_hsa_fsa_savings

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

calculate_life_insurance

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

calculate_mortgage

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

calculate_payroll_tax

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

calculate_quarterly_tax

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

calculate_rental_affordability

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

calculate_rental_roi

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

calculate_reseller_profit

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

calculate_roi

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

calculate_se_tax

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

calculate_student_loan

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

calculate_tariff

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

compare

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.

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.

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.

compare_llc_cost

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

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.

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.

estimate

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.

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.

generate

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.

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.

plan

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?".

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.

advise

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.

audit

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.

compress

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.

detect

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.

economic

check_economic_nexus

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

sales

get_sales_tax_rate

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

score

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.

tool

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.

validate

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.

Endpoints

URL	Transport	State	Latency	Checked
https://freetoolhub.org/api/mcp	streamable-http	answering	210 ms	7 min ago

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FreeToolHub — questions

Answers built from our own checks of this server.

What can FreeToolHub do?

It exposes 44 tools, read directly from the server on our last check. Among them: advise_tool_portfolio, audit_mcp_server_security, calculate_1099k_tax, calculate_break_even, calculate_capital_gains_tax, calculate_car_loan and 38 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

What is FreeToolHub mostly used for?

Its tools cluster around calculate, compare and generate. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.

Is FreeToolHub working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 279 ms. The bar chart above shows every period we have measured.

Is FreeToolHub still maintained?

The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.

How do I connect FreeToolHub?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does FreeToolHub need an API key?

No. FreeToolHub completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 44 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is FreeToolHub?

It answers our handshake in 279 ms on average, which is faster than 53% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.