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Quadratic

Official registry Data and databases

AI access to Quadratic spreadsheets: open files, run Python/SQL, query connected databases.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http quadratic 'https://mcp.quadratichq.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "quadratic": {
            "type": "http",
            "url": "https://mcp.quadratichq.com/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Quadratic MCP Cursor Plugin
  2. Included
  3. Usage
  4. Development

Quadratic MCP Cursor Plugin

This repository packages the hosted Quadratic MCP server as a Cursor plugin. Installing it connects Cursor to Quadratic spreadsheets through the production streamable HTTP MCP endpoint:

{
  "mcpServers": {
    "quadratic": {
      "type": "streamable-http",
      "url": "https://mcp.quadratichq.com/mcp"
    }
  }
}

Included

  • plugins/quadratic-mcp/mcp.json adds the hosted Quadratic MCP server.
  • plugins/quadratic-mcp/rules/ provides light guidance for using Quadratic MCP safely.
  • plugins/quadratic-mcp/skills/ adds an on-demand spreadsheet workflow skill.
  • plugins/quadratic-mcp/assets/logo.svg is the marketplace logo.

Usage

After installing the plugin in Cursor, open a chat and ask to work with a Quadratic spreadsheet. If you are not authenticated yet, ask Cursor to run the Quadratic MCP auth tool with the login action and complete the device auth flow.

Example prompts:

  • "Open my Budget 2026 Quadratic file and summarize it."
  • "Create a Quadratic spreadsheet from this CSV."
  • "Add a Python code cell that analyzes sales by month."
  • "Show me the schema for my connected Postgres database."

Development

Validate the plugin manifest and referenced files:

node scripts/validate-template.mjs

The marketplace manifest lives at .cursor-plugin/marketplace.json. The plugin manifest lives at plugins/quadratic-mcp/.cursor-plugin/plugin.json.

Frequently asked questions

What is Quadratic?

AI access to Quadratic spreadsheets: open files, run Python/SQL, query connected databases.

How do I install Quadratic?

It runs as a remote server. In Claude Code: claude mcp add --transport http quadratic 'https://mcp.quadratichq.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Quadratic need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Quadratic open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Quadratic?

It is published by quadratichq. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.