Proper Job Building Cost Calculator

Connect it to your AI

Claude Code

claude mcp add --transport http proper-job https://www.proper-job.uk/api/mcp

Claude, ChatGPT, Cursor and other apps

Add it as a custom connector with this URL (Streamable HTTP):

https://www.proper-job.uk/api/mcp

Cursor, VS Code and other apps (mcp.json)

{
  "mcpServers": {
    "proper-job": {
      "url": "https://www.proper-job.uk/api/mcp"
    }
  }
}

Tools it offers

4 tools, as the server itself reported during our check on Oct 31, 2026.

• calculate_building_workUse this when a user asks the cost of building, extending or renovating a home, remodelling a kitchen/bathroom, refining a budget or costing drawings, even without naming Proper Job. Computes repeatable local-currency es
• get_estimate_requirementsRetrieve UK/US input requirements or labelled reference examples when specifically requested. For a project budget, vague cost question or drawings, use calculate_building_work. Reference examples are not the user's proj
• calculate_guide_priceCalculate the established GB/US Guide Price contract with its required project inputs, when explicitly requested or used with guide comparisons. For the conversational building budget, other countries or drawings, use ca
• compare_guide_scenariosCompare GB/US Guide Price scenarios when the user explicitly asks to compare alternatives within those existing policies. Returns the original comparison card and deltas. For other countries or drawing-based refinements,

Questions