diy-home-mcp

MCP server for DIY & home improvement -- paint calculator, flooring estimator, electrical load calculator, plumbing pipe sizer, tool recommender, project planner, and material cost estimator.

DISCLAIMER: All estimates are for planning purposes only. Not a substitute for professional advice. Always follow local building codes. For electrical and plumbing work, consult a licensed professional. See TERMS.md.

Install

npx diy-home-mcp

Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "diy-home-mcp": {
      "command": "npx",
      "args": ["-y", "diy-home-mcp"]
    }
  }
}

7 Tools

| Tool | Description | |------|-------------| | calculate_paint | Paint needed for a room -- area, liters, coverage, cost, can sizes, tips | | estimate_flooring | Flooring materials, cost, and installation time by type and pattern | | calculate_electrical_load | Circuit load analysis -- breaker size, wire gauge, safety margin, warnings | | size_plumbing | Pipe sizing for fixtures -- supply, drain, venting, pressure requirements | | recommend_tools | Tool recommendations by project type -- essential, nice-to-have, safety, rental advice | | plan_project | Step-by-step project plan -- time, permits, mistakes to avoid, when to hire a pro | | estimate_materials | Itemized materials list -- quantities, costs, contingency, bulk discounts |

Examples

Paint Calculator

"How much paint do I need for a 5m x 4m bedroom with 2.5m ceilings, 1 door, and 2 windows?"

calculate_paint({
  room_length: 5,
  room_width: 4,
  room_height: 2.5,
  num_doors: 1,
  num_windows: 2,
  coats: 2,
  paint_type: "satin"
})

Flooring Estimator

"Estimate hardwood flooring for a 6m x 5m living room with herringbone pattern."

estimate_flooring({
  room_length: 6,
  room_width: 5,
  flooring_type: "hardwood",
  pattern: "herringbone",
  quality: "mid"
})

Electrical Load Calculator

"Can my kitchen circuit handle a microwave, toaster, and coffee maker?"

calculate_electrical_load({
  appliances: [
    { name: "Microwave", watts: 1200 },
    { name: "Toaster", watts: 800 },
    { name: "Coffee maker", watts: 600 }
  ],
  circuit_voltage: 120
})

Plumbing Pipe Sizer

"What pipe sizes for a bathroom with sink, toilet, and shower?"

size_plumbing({
  fixtures: ["sink", "toilet", "shower"],
  pipe_material: "pex",
  floors: 1
})

Tool Recommender

"What tools do I need for a tiling project as a beginner?"

recommend_tools({
  project_type: "tiling",
  skill_level: "beginner"
})

Project Planner

"Plan a flooring project for my 5m x 4m room. I'm intermediate level with $1500 budget."

plan_project({
  project_type: "flooring",
  room_length: 5,
  room_width: 4,
  skill_level: "intermediate",
  budget: 1500
})

Material Cost Estimator

"Estimate materials for a mid-range decking project, 6m x 4m."

estimate_materials({
  project_type: "decking",
  length: 6,
  width: 4,
  quality: "mid"
})

Supported Project Types

• Painting
• Flooring (hardwood, laminate, tile, vinyl, carpet)
• Electrical
• Plumbing
• Drywall
• Tiling
• Decking

Pro Products

Unlock advanced features, priority support, and commercial use:

Get DIY Home MCP Pro

Pro includes:

• Priority tool updates and new calculators
• Commercial use license
• Direct support channel
• Early access to new features

Development

npm install
npm test
npm run build

License

Apache-2.0 -- see LICENSE.