Blackmount Construction MCP

The unified construction MCP for developers — all trades in one server.

48 tools spanning materials, labor, cost, structural, permits, plumbing, electrical, HVAC, and estimate generation. One pip install for the whole jobsite.

Built by Blackmount AI. Free web versions at tools.blackmount.ai.

Install

pip install blackmount-construction-mcp

Or with uv:

uvx blackmount-construction-mcp

Claude Desktop Configuration

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "construction": {
      "command": "uvx",
      "args": ["blackmount-construction-mcp"]
    }
  }
}

Or if installed via pip:

{
  "mcpServers": {
    "construction": {
      "command": "blackmount-construction-mcp"
    }
  }
}

Example Prompts

Once connected, ask Claude things like:

"How much concrete do I need for a 24×36 slab, 4 inches thick?"

"Size the panel for a 2400 sqft house with electric range, electric dryer, and central AC."

"What's the simplified Manual J heat load for a 1800 sqft home in climate zone 5?"

"Estimate the labor hours and cost for installing 1200 sqft of drywall with a 2-person crew."

"Generate an HTML estimate for a kitchen remodel: $8,500 cabinets, 35 sqft of quartz at $75/sqft, 8.25% tax."

The agent picks the right tool, runs the calculation, and replies with structured numbers — no spreadsheets.

Tool Categories (48 total)

Structural and Manual J calculators are planning-grade, not for final engineering design. Consult a licensed engineer for stamped drawings.

All Tools

Materials (10)

Labor (4)

Cost (7)

Structural (7)

Permits & Compliance (4)

Plumbing (5)

Electrical (5)

HVAC (4)

Estimate Documents (2)

Use as a Python Library

Each module is also importable for non-MCP use:

from blackmount_construction_mcp import materials, electrical, hvac, plumbing, pdf_estimate

# Concrete for a 20×30 slab, 4 inches thick
materials.concrete_volume(20, 30, 4)
# {'cubic_feet': 200.0, 'cubic_yards': 7.41, 'order_yards': 8.25, ...}

# Electrical load calc for a 2000 sqft house
electrical.electrical_load_calc(2000, 15, ["electric_range", "electric_dryer", "central_ac"])
# {'total_load_va': ..., 'recommended_panel_amps': 100, ...}

# Generate an HTML estimate (user inputs are HTML-escaped)
pdf_estimate.generate_estimate_html(
    project_name="Kitchen Remodel",
    client_name="Jane Smith",
    line_items=[
        {"description": "Cabinets", "quantity": 1, "unit": "set", "unit_price": 8500},
        {"description": "Quartz countertop", "quantity": 35, "unit": "sqft", "unit_price": 75},
    ],
    tax_rate=8.25,
)

Want these tools in your browser?

All calculators are available as free web tools at tools.blackmount.ai/construction.

Construction Pro (coming soon) will add: branded estimate PDFs, multi-project workspace, saved estimates, and contractor markup presets. Pricing →

On the job site?

Blackmount Field (iOS, coming soon) brings these calculators into a contractor's mobile workflow:

• Quick estimates from a phone
• Change orders with photo proof and GPS
• Client e-signatures + share links
• Branded PDF output
• Project memory across visits

This MCP package is the underlying calculation engine. Blackmount Field is the contractor app on top of it.

• iOS app: coming soon
• Web tools today: tools.blackmount.ai/construction

Part of the Blackmount Ecosystem

This MCP server is part of Blackmount — the AI work vault that captures your AI conversations, meetings, and browser data into private project memory.

• Blackmount Extension — Capture AI chats from ChatGPT, Claude, Gemini, and 10+ platforms
• tools.blackmount.ai — Free online calculators (construction, finance, trading, and more)
• app.blackmount.ai — The AI work vault

More MCP Servers by Blackmount

Comparison

This is a calculation engine that plugs into any AI assistant, script, or application via the Model Context Protocol. Not a SaaS dashboard.

Development

git clone https://github.com/BlackMount-ai/blackmount-construction-mcp.git
cd blackmount-construction-mcp
python -m venv .venv && source .venv/bin/activate
pip install -e .
pip install pytest
pytest tests/ -v

License

MIT License. See LICENSE.