Install MCPCalc MCP Server

Connect your AI assistant to MCPCalc's calculator tools via the Model Context Protocol. Select your platform below to get started.

Prerequisite: Make sure MCPCalc is running locally on http://localhost:3000 or replace the URL below with your deployed instance URL.

Open Claude Desktop and go to Settings → Developer → Edit Config.
This opens claude_desktop_config.json. Add the MCPCalc server to the mcpServers section:

{
  "mcpServers": {
    "mcpcalc": {
      "url": "http://localhost:3000/api/v1/mcp"
    }
  }
}

Save the file and restart Claude Desktop.
You should now see MCPCalc tools available when you click the MCP tools icon in the chat input.

Config file locations:

Available Tools

Once connected, your AI assistant will have access to these tools:

list_calculators

List available calculators by category

get_calculator_schema

Get input schema for a calculator

calculate

Run a calculation and get results

generate_prefilled_url

Generate a shareable pre-filled URL

create_session

Start an interactive session

get_session_state

Get current session state

push_session_action

Push actions into a session

close_session

Close an active session