0s and 1s CIS calculators MCP Server: Install & Setup

Install 0s and 1s CIS calculators in Claude Code

Claude Code

claude mcp add --transport http 0s-and-1s-cis-calculators https://0sand1s.co.uk/mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "0s-and-1s-cis-calculators": {
      "url": "https://0sand1s.co.uk/mcp"
    }
  }
}

Free UK CIS calculators: deductions, deadlines, late penalties, gross payment test, verification.

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Remote. Hosted by the provider. You connect with a URL, nothing to install.

Run: claude mcp add --transport http 0s-and-1s-cis-calculators https://0sand1s.co.uk/mcp

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