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For Contractors

Material takeoffs and bid math without a spreadsheet.

Concrete volume, rebar counts, framing lumber, paint coverage, labor burden — the calculations behind every estimate are small but easy to get wrong under time pressure. These are live tools an estimating agent (or a script) can call directly.

12 tools for contractors

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Concrete Calculator
Cubic yards, 60/80-lb bag counts and ready-mix cost for slabs, columns or tubes.
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Wall Framing Calculator
Stud, plate and header counts plus board-feet and cost for a framed wall.
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Floor Joist Span Calculator
Joist size/spacing feasibility and count for a floor span under a given live load.
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Rebar Calculator
Total rebar length, bar count and cost for a grid from slab dimensions and spacing.
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Board Feet Calculator
Board-feet per piece and total, weight and lumber cost from dimensions and quantity.
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Insulation Calculator
Material quantity and cost to hit a target R-value for a given assembly and climate zone.
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Paint Calculator
Gallons of paint and number of coats for a room from wall dimensions, openings and coverage.
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Paver Calculator
Paver count, base material and cost for a patio/walkway, including cutouts and waste.
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Asphalt Calculator
Tons of asphalt, loose cubic yards, truckloads and sub-base from driveway/lot dimensions.
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Contractor Bid Estimator
Build a client job bid from cost components: labor hours x rate + materials + equipment + subs, then overhead,…
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Construction Markup Calculator
Bid price, markup and true margin from direct costs, overhead and target margin.
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Labor Burden Calculator
Fully-burdened hourly cost of an employee including taxes, insurance, PTO and billing margin.

Install

One command wires up every tool below for Claude Code:

claude mcp add --transport http wingman https://agent.wingmanprotocol.com/mcp

Claude Desktop, Cursor and Continue configs are on /install. A free key adds 10,000 calls a month, no card: /pricing, which also has the current prices.