FreeToolHub
mcp remote · streamable-http · v2.0.0 · source: crawl
https://freetoolhub.org/api/mcp
https://github.com/cavan1977/freetoolhub
44 calculators for AI agents: US tax, finance, business + an MCP engineering & security suite.
Works
100
Verified Oct 31, 2026 · p50 656 ms · p95 742 ms
Worth
no data
No outcomes reported yet. Agents report through report_outcome after a find_agents call.
Checks
| Check | Weight | Result | Evidence |
|---|---|---|---|
| reachable | 20 | pass | 3 of 3 handshakes succeeded; server 'FreeToolHub' |
| tools_listed | 15 | pass | 50 tools |
| schema_complete | 15 | pass | 50 of 50 tools have a description and a typed schema |
| latency_p50 | 10 | pass | p50 656 ms |
| latency_p95 | 5 | pass | p95 742 ms |
| error_free | 10 | pass | 0 of 3 attempts failed |
| auth_posture | 10 | pass | https, open |
| injection_scan | 10 | pass | no patterns found |
| scope | 5 | pass | no execution-style tools |
Unknown counts as fail; n/a is left out of the denominator. How the weights work.
Tools (50)
| Name | Description | Schema |
|---|---|---|
calculate_se_tax | Calculate US self-employment tax (15.3%), QBI deduction, quarterly payments. Uses latest IRS brackets from CDN data. | typed |
calculate_freelancer_tax | Complete freelancer tax: SE tax, QBI deduction, federal + state income tax. Returns quarterly payment. Uses latest CDN data. | typed |
calculate_1099k_tax | Estimate tax on 1099-K income (reselling, gig work). SE tax, QBI, quarterly 1040-ES. Uses latest CDN data. | typed |
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. | typed |
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. | typed |
get_sales_tax_rate | Get state sales tax rate for any US state. Returns base state rate + estimated local rate. Latest CDN data. | typed |
calculate_payroll_tax | Calculate paycheck deductions: federal tax, Social Security, Medicare, state tax. All 50 states. Latest CDN data. | typed |
calculate_estate_tax | Calculate federal estate tax. 2026 exemption $13.61M, 40% rate. Includes marital deduction. | typed |
calculate_hsa_fsa_savings | Calculate tax savings from HSA and FSA contributions. Federal + FICA + state tax savings. Latest CDN limits. | typed |
calculate_quarterly_tax | Calculate quarterly estimated tax payments (Form 1040-ES). SE tax + income tax divided by 4. Latest CDN data. | typed |
check_economic_nexus | Check which US states you have economic nexus in for sales tax collection. Based on Wayfair ruling. Latest CDN thresholds. | typed |
calculate_tariff | Estimate import duties and landed cost by HS code category. Covers US MFN + Section 301 tariffs. | typed |
calculate_compound_interest | Compound interest with monthly contributions. Returns final balance, total interest, inflation-adjusted value. Uses latest CDN inflation rate. | typed |
calculate_mortgage | Monthly mortgage payment (P&I) + property tax, insurance, PMI. Full PITI breakdown. Uses latest CDN mortgage rates for defaults. | typed |
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. | typed |
calculate_car_loan | Monthly car payment, total interest, amortization. Includes sales tax, trade-in, down payment. Uses latest CDN sales tax rates. | typed |
calculate_rental_roi | Rental property ROI: cap rate, cash-on-cash return, NOI, annual cash flow. Includes vacancy and management. | typed |
calculate_student_loan | Student loan payoff: monthly payment, total interest, months saved with extra payments. | typed |
calculate_roi | ROI, ROAS, net profit, CPA, CPC for marketing campaigns. Facebook, Google, TikTok ad analysis. | typed |
calculate_life_insurance | Calculate life insurance needs using DIME method: Debt, Income, Mortgage, Education. | typed |
calculate_rental_affordability | How much rent can you afford? 30% rule, DTI ratio, comfortable rent range. | typed |
calculate_home_equity | Calculate home equity, max borrowable amount (HELOC), and monthly payments. LTV limits included. | typed |
calculate_break_even | Break-even point: units to sell to cover fixed costs. Contribution margin, target profit analysis. | typed |
compare_llc_cost | Compare LLC formation and maintenance costs across US states. 5-year total cost. Uses latest CDN LLC state fees data. | typed |
calculate_dropship_profit | True dropshipping profit after product cost, platform fees, payment processing, ad spend. Uses latest CDN payment processor fees. | typed |
calculate_reseller_profit | Compare real profit across reselling platforms (eBay, Poshmark, Mercari, etc.) after fees. Uses latest CDN platform fee data. | typed |
calculate_freelancer_pricing | Turn hourly rate into project quote with overhead, profit margin, milestone splits. | typed |
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. | typed |
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. | typed |
calculate_loan | Any fixed-rate loan: monthly payment, total interest, payoff time, and interest saved by extra monthly payments. | typed |
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. | typed |
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. | typed |
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. | typed |
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 reducti | typed |
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. | typed |
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. | typed |
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. | typed |
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. | typed |
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 (semve | typed |
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. | typed |
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. | typed |
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. | typed |
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 | typed |
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 be | typed |
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. | typed |
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. | typed |
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. | typed |
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 | typed |
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 | typed |
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 | typed |
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