Quadratic MCP is a remote, OAuth-protected MCP server. Any compatible client — current or future — can point at it, authenticate once, and start reading and writing your spreadsheets.
How to add Quadratic MCP to any MCP client
- 1
Copy the Quadratic MCP URL
This is the only value your client needs. It exposes every Quadratic MCP tool over Streamable HTTP transport.MCP server URL - 2
Register it in your client’s config
Most modern MCP clients expect a JSON entry with a url (or serverUrl for Windsurf, httpUrl for Gemini CLI) field. Paste the generic snippet below into whatever config file your client uses.Generic MCP config{ "mcpServers": { "quadratic": { "url": "https://mcp.quadratichq.com/" } } } - 3
Complete the OAuth flow
The first time your client invokes a Quadratic tool, it will open a browser window for the Quadratic OAuth flow. Sign in with your Quadratic account and approve access. - 4
Invoke Quadratic tools
Ask your AI tool to use Quadratic. The server advertises tools for reading sheets, writing cells, running Python/SQL/formulas, and creating charts. Your client will list them automatically once connected.
Already have a one-click option?
If you use one of the mainstream MCP clients we support, follow the dedicated guide — it's faster and includes any client-specific gotchas.
any MCP client + Quadratic MCP FAQs
Which MCP transport does Quadratic support?
Quadratic MCP is a Streamable HTTP server. This is the recommended transport for remote MCP in the current spec and is supported by Cursor, VS Code, Claude Code, Codex CLI, Gemini CLI, Claude web/desktop, and ChatGPT. For clients that only speak stdio, use the mcp-remote bridge (see the Claude Desktop section on /ai/mcp/claude).
What tools does the Quadratic MCP server expose?
The server exposes a full set of spreadsheet tools: reading cells, sheets, and files; writing values and formulas; creating and updating charts; running Python and SQL; and managing Quadratic workspace files. Your AI client will list the full inventory after connecting.
Is my data sent to Quadratic?
Your AI client talks to the Quadratic MCP server on your behalf. Quadratic only ever shows data from files your authenticated account can access. Nothing is trained on your spreadsheets.
Can I self-host the MCP server?
The hosted Quadratic MCP server at https://mcp.quadratichq.com/ is available to every Quadratic plan. Enterprise customers on self-hosted Quadratic should reach out for a deployment-specific MCP endpoint.
What is the Quadratic MCP URL?
The Quadratic MCP server is hosted at https://mcp.quadratichq.com/. Paste this URL into your any MCP client 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 any MCP client?
Once connected, any MCP client can read values from your Quadratic sheets, write cells and formulas, run Python and SQL, and build charts. Ask any MCP client 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.
