feat: add interactive MCP configuration to supabase init

- Replace --mcp-client flag with interactive prompts
- Add yes/no prompt: 'Configure Supabase MCP server locally?'
- Add dropdown selection for client choice (Claude Code, Cursor, VS Code, Other)
- Add 'Other' option for manual configuration
- Update all clients to use local MCP server (http://localhost:54321/mcp)
- Fix VS Code config property from 'mcpServers' to 'servers'
- Replace VS Code scope selection with interactive dropdown (project/global)

This implements the requirements from Linear issue AI-81.

Author: Rodriguespn

cmd/init.go

@@ -50,13 +50,23 @@ var (
 				return err
 			}
 
-			// Optionally configure MCP client if flag is provided
-			mcpClient, _ := cmd.Flags().GetString("mcp-client")
-			if mcpClient != "" {
-				if err := mcpinit.Run(ctx, fsys, mcpClient); err != nil {
+			// Prompt for MCP configuration if in interactive mode
+			console := utils.NewConsole()
+			if configureMCP, err := console.PromptYesNo(ctx, "Configure Supabase MCP server locally?", false); err != nil {
+				return err
+			} else if configureMCP {
+				clientName, err := mcpinit.PromptMCPClient(ctx)
+				if err != nil {
 					return err
 				}
+				// Skip configuration if user selected "other"
+				if clientName != "other" {
+					if err := mcpinit.Run(ctx, fsys, clientName); err != nil {
+						return err
+					}
+				}
 			}
+
 			return nil
 		},
 		PostRun: func(cmd *cobra.Command, args []string) {
@@ -73,6 +83,5 @@ func init() {
 	flags.BoolVar(createIntellijSettings, "with-intellij-settings", false, "Generate IntelliJ IDEA settings for Deno.")
 	flags.BoolVar(&initParams.UseOrioleDB, "use-orioledb", false, "Use OrioleDB storage engine for Postgres.")
 	flags.BoolVar(&initParams.Overwrite, "force", false, "Overwrite existing "+utils.ConfigPath+".")
-	flags.String("mcp-client", "", "Configure Supabase MCP for a client (e.g., claude-code, cursor, vscode). Runs after project init if provided.")
 	rootCmd.AddCommand(initCmd)
 }

internal/mcp/init/claude_code.go

@@ -28,12 +28,11 @@ func newClaudeCodeClient() *claudeCodeClient {
 }
 
 func (c *claudeCodeClient) Configure(ctx context.Context, fsys afero.Fs) error {
-	fmt.Println("Adding Supabase MCP server to Claude Code...")
+	fmt.Println("Configuring Claude Code...")
 	fmt.Println()
 
-	// Build the claude mcp add command
-	// #nosec G204 -- command and URL are controlled constants
-	cmd := exec.CommandContext(ctx, "claude", "mcp", "add", "--transport", "http", "supabase", "https://mcp.supabase.com/mcp")
+	// Run the 'claude mcp add' command
+	cmd := exec.CommandContext(ctx, "claude", "mcp", "add", "--transport", "http", "supabase", "http://localhost:54321/mcp")
 
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr

internal/mcp/init/cursor.go

@@ -59,7 +59,7 @@ func (c *cursorClient) Configure(ctx context.Context, fsys afero.Fs) error {
 
 	// Prepare the Supabase MCP server config
 	supabaseConfig := map[string]interface{}{
-		"url": "https://mcp.supabase.com/mcp",
+		"url": "http://localhost:54321/mcp",
 	}
 
 	// Read existing config if it exists
@@ -107,7 +107,7 @@ func (c *cursorClient) Configure(ctx context.Context, fsys afero.Fs) error {
 	fmt.Println(`{
   "mcpServers": {
     "supabase": {
-      "url": "https://mcp.supabase.com/mcp"
+      "url": "http://localhost:54321/mcp"
     }
   }
 }`)

internal/mcp/init/init.go

@@ -4,7 +4,9 @@ import (
 	"context"
 	"fmt"
 
+	tea "github.com/charmbracelet/bubbletea"
 	"github.com/spf13/afero"
+	"github.com/supabase/cli/internal/utils"
 )
 
 // clientRegistry holds all supported clients
@@ -14,6 +16,30 @@ var clientRegistry = []Client{
 	newVSCodeClient(),
 }
 
+// PromptMCPClient prompts the user to select an MCP client from the available options
+func PromptMCPClient(ctx context.Context, opts ...tea.ProgramOption) (string, error) {
+	// Add all clients plus "Other" option
+	items := make([]utils.PromptItem, len(clientRegistry)+1)
+	for i, client := range clientRegistry {
+		items[i] = utils.PromptItem{
+			Summary: client.Name(),
+			Details: client.DisplayName(),
+		}
+	}
+	// Add "Other" option at the end
+	items[len(clientRegistry)] = utils.PromptItem{
+		Summary: "other",
+		Details: "Configure it manually",
+	}
+	
+	choice, err := utils.PromptChoice(ctx, "Which client do you want to configure?", items, opts...)
+	if err != nil {
+		return "", err
+	}
+	
+	return choice.Summary, nil
+}
+
 func Run(ctx context.Context, fsys afero.Fs, clientFlag string) error {
 	// If a specific client is requested
 	if clientFlag != "" {

internal/mcp/init/vscode.go

@@ -7,7 +7,9 @@ import (
 	"os"
 	"path/filepath"
 
+	tea "github.com/charmbracelet/bubbletea"
 	"github.com/spf13/afero"
+	"github.com/supabase/cli/internal/utils"
 )
 
 // vscodeClient implements the Client interface for VS Code
@@ -32,22 +34,25 @@ func (c *vscodeClient) Configure(ctx context.Context, fsys afero.Fs) error {
 	fmt.Println("Configuring VS Code...")
 	fmt.Println()
 
-	// Prompt for config scope
-	fmt.Println("Where would you like to add the configuration?")
-	fmt.Println("  1. Project-local (in .vscode/mcp.json)")
-	fmt.Println("  2. Global (in your home directory)")
-	fmt.Print("Choice [1]: ")
-
-	var choice string
-	if _, err := fmt.Scanln(&choice); err != nil && err.Error() != "unexpected newline" {
-		return fmt.Errorf("failed to read choice: %w", err)
+	// Prompt for config scope using dropdown
+	items := []utils.PromptItem{
+		{
+			Summary: "project",
+			Details: "Project-local (in .vscode/mcp.json)",
+		},
+		{
+			Summary: "global",
+			Details: "Global (in your home directory)",
+		},
 	}
-	if choice == "" {
-		choice = "1"
+
+	choice, err := utils.PromptChoice(ctx, "Where would you like to add the configuration?", items, tea.WithOutput(os.Stderr))
+	if err != nil {
+		return err
 	}
 
 	var configPath string
-	if choice == "2" {
+	if choice.Summary == "global" {
 		// Global config
 		homeDir, _ := os.UserHomeDir()
 		configPath = filepath.Join(homeDir, ".vscode", "mcp.json")
@@ -60,7 +65,7 @@ func (c *vscodeClient) Configure(ctx context.Context, fsys afero.Fs) error {
 	// Prepare the Supabase MCP server config
 	supabaseConfig := map[string]interface{}{
 		"type": "http",
-		"url":  "https://mcp.supabase.com/mcp",
+		"url":  "http://localhost:54321/mcp",
 	}
 
 	// Read existing config if it exists
@@ -75,15 +80,15 @@ func (c *vscodeClient) Configure(ctx context.Context, fsys afero.Fs) error {
 		config = make(map[string]interface{})
 	}
 
-	// Ensure mcpServers exists
-	mcpServers, ok := config["mcpServers"].(map[string]interface{})
+	// Ensure servers exists
+	servers, ok := config["servers"].(map[string]interface{})
 	if !ok {
-		mcpServers = make(map[string]interface{})
-		config["mcpServers"] = mcpServers
+		servers = make(map[string]interface{})
+		config["servers"] = servers
 	}
 
 	// Add or update Supabase server
-	mcpServers["supabase"] = supabaseConfig
+	servers["supabase"] = supabaseConfig
 
 	// Ensure directory exists
 	configDir := filepath.Dir(configPath)
@@ -106,10 +111,10 @@ func (c *vscodeClient) Configure(ctx context.Context, fsys afero.Fs) error {
 	fmt.Println()
 	fmt.Println("Configuration added:")
 	fmt.Println(`{
-  "mcpServers": {
+  "servers": {
     "supabase": {
       "type": "http",
-      "url": "https://mcp.supabase.com/mcp"
+      "url": "http://localhost:54321/mcp"
     }
   }
 }`)