Once installed, Cursor can read and edit your Quadratic spreadsheets directly from Cursor Chat. Ask it to pull live data, update formulas, run Python or SQL, and build charts — all without leaving the editor.
How to add Quadratic MCP to Cursor
- 1
Click "Add to Cursor"
Your browser will ask to open Cursor. If Cursor isn't already running, macOS / Windows / Linux will launch it. Approve the install prompt inside Cursor. - 2
Approve the server
Cursor shows a confirmation dialog with the server name and URL. Click Add. Quadratic appears as quadratic under Cursor Settings → MCP. - 3
Authenticate with Quadratic
The first time Cursor calls a Quadratic tool, it will open a browser window to sign you in via OAuth. Approve access to your Quadratic workspace. - 4
Ask Cursor to use Quadratic
Open Cursor Chat and try a prompt like "Using Quadratic, summarize my Q3 sales sheet and highlight outliers." Cursor will call the Quadratic MCP tools and stream the result inline.
Prefer editing mcp.json manually?
Cursor reads MCP servers from ~/.cursor/mcp.json (global) or .cursor/mcp.json in any project. Merge the snippet below into either file to register Quadratic without the deeplink.
~/.cursor/mcp.json
{
"mcpServers": {
"quadratic": {
"url": "https://mcp.quadratichq.com/"
}
}
}Cursor + Quadratic MCP FAQs
What does "Add to Cursor" actually do?
Clicking the button fires a cursor:// deeplink containing a base64-encoded server config. Cursor picks up the deeplink, shows an approval dialog, and writes the server into your mcp.json for you.
Can I install at the project scope?
Yes. After the deeplink adds Quadratic globally, you can copy the entry into a project-scoped .cursor/mcp.json to share it with your team via version control.
Where does Cursor store the OAuth token?
Cursor stores MCP OAuth tokens in its secure storage (OS keychain on macOS/Windows, encrypted file on Linux). Revoke access any time from your Quadratic account settings or by removing the server in Cursor.
The deeplink didn’t open Cursor — what now?
Make sure Cursor is installed and has been launched at least once. If the browser prompt is suppressed, use the manual mcp.json setup shown above.
What is the Quadratic MCP URL?
The Quadratic MCP server is hosted at https://mcp.quadratichq.com/. Paste this URL into your Cursor MCP configuration.
Is Quadratic MCP free?
Yes. Quadratic MCP is included with every Quadratic plan, including the free tier. You only need a Quadratic account and a supported AI client.
Is it secure?
Yes. Quadratic MCP uses OAuth 2.0 to authenticate each AI client with your Quadratic account. Your AI only sees files and data you already have access to, and you can revoke any connected client at any time in Quadratic settings.
What can I do with Quadratic MCP in Cursor?
Once connected, Cursor can read values from your Quadratic sheets, write cells and formulas, run Python and SQL, and build charts. Ask Cursor any question about your spreadsheets the same way you’d ask about a PDF or URL.
Which other AI clients support Quadratic MCP?
Cursor, VS Code, Claude, ChatGPT, and Windsurf all work with Quadratic MCP today, plus any other client that supports remote Streamable HTTP MCP servers. See the full list.
