Connect Claude Desktop

Prerequisites

Open the Claude Desktop config file.

macOS:
```
open ~/Library/Application\ Support/Claude/
```
Windows:
```
%APPDATA%\Claude\
```
Open claude_desktop_config.json in your editor. If it does not exist, create it.

Add the sheets-mcp server.

{
  "mcpServers": {
    "sheets-mcp": {
      "url": "https://sheets-mcp-xi.vercel.app/api/mcp"
    }
  }
}

If you already have other MCP servers, add sheets-mcp as a new key inside mcpServers.

Restart Claude Desktop.

Fully quit and relaunch Claude Desktop. On restart, Claude detects the new MCP server and initiates the OIDC auth handshake — it discovers the authorization endpoint from /.well-known/oauth-authorization-server automatically.
Complete Google OAuth consent.

Claude opens a browser window to the authorization endpoint. Sign in with the Google account connected to sheets-mcp and grant the requested scopes.
Test a tool.

Ask Claude to list spreadsheets. If auth is successful, it should return a live sheet list immediately.