Model Context Protocol and Fireproof Demo: JSON Document Server

This is a simple example of how to use a Fireproof  database in a Model Context Protocol  server (used for plugging code and data into A.I. systems such as Claude Desktop ).

This demo server implements a basic JSON document store with CRUD operations (Create, Read, Update, Delete) and the ability to query documents sorted by any field.

Installation

Install dependencies:

npm install
npm build

Running the Server

To use with Claude Desktop, add the server config:

On MacOS: ~/Library/Application Support/Claude/claude_desktop_config.json On Windows: %APPDATA%/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "fireproof": {
      "command": "/path/to/fireproof-mcp/build/index.js"
    }
  }
}

Debugging

Since MCP servers communicate over stdio, debugging can be challenging. We recommend using the MCP Inspector , which is available as a package script:

npm run inspector

The Inspector will provide a URL to access debugging tools in your browser.