RepairWorth Auto Repair Quote Checker MCP server

repairworth-mcp

A Model Context Protocol server (stdio) that runs the calculation engine of the RepairWorth car repair estimate checker from an MCP client. RepairWorth is an independent publication that helps drivers read a US auto repair quote before they pay.

The server works on the amounts written on a quote. It checks that a total agrees with its itemized lines, compares two quotes line by line, rebuilds a towing bill from its own terms, and spreads planned maintenance over a number of months. A fifth tool looks up one state in a dataset of state laws on auto repair estimates.

What it does not do. The server holds no market price and no typical range. It does not say what a repair should cost, and it does not say whether a quote is fair. Every dollar amount in a result was computed from an amount the caller supplied.

The engine is not re-implemented here. The site's engine file is copied unchanged into vendor/, and the test suite checks that each tool returns what the engine returns.

Install

Requires Node.js 18 or later. Run it with npx (no install step), or install it globally:

npx -y repairworth-mcp
# or
npm install -g repairworth-mcp

Claude Desktop (claudedesktopconfig.json):

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

Claude Code:

claude mcp add repairworth -- npx -y repairworth-mcp

From source: git clone https://github.com/repairworth/repairworth-mcp.git, then npm ci and node bin/repairworth-mcp.js.

Tools

analyzequote and comparequotes run the same functions as the car repair estimate checker linked above. towingestimate runs the function of the site's towing cost calculator, and maintenanceplan the one of its maintenance cost planner.

Inputs

amount), included (covered elsewhere) or not-applicable. Only fixed and range carry an amount. The three others are never counted as zero.

• A dollar amount is a number, or a string such as "85", "85.50" or "$1,234.50", with two decimals at most.
• A line or a total has a status: fixed (one amount), range (low to high), unknown (the quote gives no

conditionalRefund: true: it stays out of the total and is reported in the refund fields.

• A credit is a positive amount with sign: -1. A refundable charge, such as a core charge, is a line with

schedule and no service interval.

• maintenance_plan takes the services, months and prices from the caller. The engine holds no maintenance

• An unknown key is refused rather than ignored, so a misspelt input cannot change a total silently.

Results

Each of the four calculation tools returns the engine's result unchanged, as JSON. Amounts are integer US cents (displayLowCents: 140000 is $1,400.00).

Shortened. The full README is on GitHub.