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CalcBloc tax and salary calculator

io.github.itmarkerz/calcbloc-mcp · v0.1.2

Take-home pay, employer cost and official tax tables for 37 countries, with sources.

Connect Runs on your machine

Terminal
claude mcp add calcbloc-mcp -e CALCBLOC_API_KEY=<CALCBLOC_API_KEY> -e CALCBLOC_DATA_DIR=<CALCBLOC_DATA_DIR> -- npx -y [email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "calcbloc-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "CALCBLOC_API_KEY": "<CALCBLOC_API_KEY>",
        "CALCBLOC_DATA_DIR": "<CALCBLOC_DATA_DIR>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "calcbloc-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "CALCBLOC_API_KEY": "<CALCBLOC_API_KEY>",
        "CALCBLOC_DATA_DIR": "<CALCBLOC_DATA_DIR>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "calcbloc-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "CALCBLOC_API_KEY": "<CALCBLOC_API_KEY>",
        "CALCBLOC_DATA_DIR": "<CALCBLOC_DATA_DIR>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
CALCBLOC_API_KEY
Optional, secret
Optional; needed after 50 requests/day. Free key from https://calcbloc.com/developers/keys (5,000 requests/day).
CALCBLOC_DATA_DIR
Optional
Optional folder with the CalcBloc tax-table data (https://calcbloc.com/data) for offline tax tables.

Details

Package[email protected] (NPM, stdio)
First published13 Nov 2026
Last updated13 Nov 2026
Registry nameio.github.itmarkerz/calcbloc-mcp

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