Same capabilities as stable VS Code: Copilot Chat Agent mode can call Quadratic tools to read, edit, and analyze your spreadsheets. Insiders gets new MCP improvements first.
How to add Quadratic MCP to VS Code Insiders
- 1
Click "Add to VS Code Insiders"
VS Code Insiders will open (or focus if already running) and show a prompt to install the Quadratic MCP server. If you only have stable VS Code installed, use the VS Code page instead. - 2
Approve the install
Click Trust to accept the server. Quadratic is added to your Insiders user settings under the servers key. - 3
Switch Copilot Chat to Agent mode
Open Copilot Chat with Cmd/Ctrl + Shift + I, then pick Agent from the mode selector to expose the Quadratic tools. - 4
Authenticate with Quadratic
The first Quadratic tool call kicks off an OAuth flow in your browser. Sign in with your Quadratic account to authorize Insiders. - 5
Start chatting with your sheets
Try a prompt like "Using Quadratic, create a cohort retention analysis from my events sheet."
Prefer editing settings.json?
Open Preferences: Open User Settings (JSON) in VS Code Insiders and merge in the snippet below under the servers key.
VS Code Insiders settings.json
{
"servers": {
"quadratic": {
"type": "http",
"url": "https://mcp.quadratichq.com/"
}
}
}VS Code Insiders + Quadratic MCP FAQs
What’s the difference between VS Code and VS Code Insiders for MCP?
Insiders is the daily-build preview channel for VS Code. MCP works identically, but Insiders receives new MCP features and fixes first. If you’re on the stable channel, use the VS Code install link instead.
Can I install the Quadratic MCP server in both Insiders and stable at the same time?
Yes. They use separate settings directories, so installing in one doesn’t affect the other. The OAuth tokens are also separate.
The deeplink didn’t open Insiders — what happened?
Make sure VS Code Insiders is installed and has been launched at least once. If your OS opens stable VS Code instead, check the default handler for the vscode-insiders:// URL scheme.
What is the Quadratic MCP URL?
The Quadratic MCP server is hosted at https://mcp.quadratichq.com/. Paste this URL into your VS Code Insiders 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 VS Code Insiders?
Once connected, VS Code Insiders can read values from your Quadratic sheets, write cells and formulas, run Python and SQL, and build charts. Ask VS Code Insiders 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.
