The CalculatorLib MCP server,
connected in one click.
Year-correct, cited payroll and tax numbers for Asia (Vietnam first) plus ~8,000 calculators. Connect the official CalculatorLib MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add CalculatorLib to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http calculatorlib https://calculatorlib.com/mcpRun in your terminal, then restart Claude Code.
CalculatorLib · https://calculatorlib.com/mcp
What your AI can do with CalculatorLib
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “search_calculators”: Search CalculatorLib by keyword in any of its 12 languages — payroll, tax and social-insurance calculators for Asian markets (year-correct,.”
“Use “get_calculator_schema”: Full input schema (field names, types, units, options) of one calculator. Optional: search_calculators already returns a compact schema per.”
“Use “run_calculator”: Run a calculator and get the result. Pass the calculator's name (from search_calculators) and its input fields in args. Returns the computed.”
“Use “convert_units”: Convert a value between units of one category (length, mass, temperature, area, volume, speed, data and 60 more). Names, symbols and common.”
How secure is the CalculatorLib MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how CalculatorLib holds up.
Security grade A
gate scanned 5 tools on Nov 12, 2026 for prompt injection and risky tool definitions — nothing to flag.
Official endpoint
Operated by CalculatorLib (calculatorlib.com) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If CalculatorLib adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick CalculatorLib
Choose CalculatorLib in the gate directory. No sign-in needed.
Use it anywhere
CalculatorLib's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools CalculatorLib exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
search_calculators — Search CalculatorLib by keyword in any of its 12 languages — payroll, tax and social-insurance calculators for Asian markets (year-correct,
get_calculator_schema — Full input schema (field names, types, units, options) of one calculator. Optional: search_calculators already returns a compact schema per
run_calculator — Run a calculator and get the result. Pass the calculator's name (from search_calculators) and its input fields in args. Returns the computed
convert_units — Convert a value between units of one category (length, mass, temperature, area, volume, speed, data and 60 more). Names, symbols and common
solve_math — Solve algebra, trigonometry or calculus step by step (equations, systems, derivatives, integrals, limits, simplify/factor). Answers are chec
Who runs the CalculatorLib MCP server?
The CalculatorLib MCP server at a glance
https://calculatorlib.com/mcpQuestions, answered
Is there an official CalculatorLib MCP server?
Yes — CalculatorLib operates its own remote MCP server at calculatorlib.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect CalculatorLib to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick CalculatorLib in the directory. No account or sign-in is needed. From then on, CalculatorLib's tools are available in every client you've connected to gate.
Do I need to host anything?
No. CalculatorLib runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the CalculatorLib MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect CalculatorLib in minutes. No credit card required.
Connect more than just CalculatorLib
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up CalculatorLib in: Claude · Claude Code · ChatGPT · Cursor · VS Code