The Calculators MCP server,
connected in one click.
Find and run trustworthy calculators with clear methods, provenance, and sources. Connect the official Calculators 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 Calculators 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 calculators-2 https://mcp.logiccommons.com/mcpRun in your terminal, then restart Claude Code.
Calculators · https://mcp.logiccommons.com/mcp
What your AI can do with Calculators
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “get_calculator_schema”: Get the input and output schema for a calculator, generated from its reviewed contract: parameter types, units, allowed dropdown values and.”
“Use “run_calculator”: Run a calculator with the given inputs. Inputs are validated against the resolved version's reviewed contract and computed by SpreadsheetWeb.”
“Use “search_calculators”: Search the LogicCommons calculator catalog by keyword and optional category. Returns matching published calculators with slug, name, summary.”
How secure is the Calculators MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Calculators holds up.
Security grade A
gate scanned 3 tools on Oct 6, 2026 for prompt injection and risky tool definitions — nothing to flag.
Official endpoint
Operated by Calculators (logiccommons.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 Calculators 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 Calculators
Choose Calculators in the gate directory. No sign-in needed.
Use it anywhere
Calculators'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 Calculators exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
get_calculator_schema — Get the input and output schema for a calculator, generated from its reviewed contract: parameter types, units, allowed dropdown values and
run_calculator — Run a calculator with the given inputs. Inputs are validated against the resolved version's reviewed contract and computed by SpreadsheetWeb
search_calculators — Search the LogicCommons calculator catalog by keyword and optional category. Returns matching published calculators with slug, name, summary
Who runs the Calculators MCP server?
The Calculators MCP server at a glance
https://mcp.logiccommons.com/mcpQuestions, answered
Is there an official Calculators MCP server?
Yes — Calculators operates its own remote MCP server at mcp.logiccommons.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 Calculators to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Calculators in the directory. No account or sign-in is needed. From then on, Calculators's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Calculators runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Calculators 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 Calculators in minutes. No credit card required.
Connect more than just Calculators
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Calculators in: Claude · Claude Code · ChatGPT · Cursor · VS Code