mcp: adds list tool (knative#2861)

Signed-off-by: kapil <[email protected]>

Author: KapilSareen

pkg/mcp/mcp.go

@@ -64,6 +64,14 @@ func NewServer() *MCPServer {
 		),
 		handleDeployTool,
 	)
+
+	mcpServer.AddTool(
+		mcp.NewTool("list",
+			mcp.WithDescription("Lists all the functions deployed in the cluster"),
+		),
+		handleListTool,
+	)
+
 	return &MCPServer{
 		server: mcpServer,
 	}
@@ -133,3 +141,16 @@ func handleDeployTool(
 	body := []byte(fmt.Sprintf(`{"result": "%s"}`, out))
 	return mcp.NewToolResultText(string(body)), nil
 }
+
+func handleListTool(
+	ctx context.Context,
+	request mcp.CallToolRequest,
+) (*mcp.CallToolResult, error) {
+	cmd := exec.Command("func", "list")
+	out, err := cmd.Output()
+	if err != nil {
+		return mcp.NewToolResultError(err.Error()), nil
+	}
+	body := []byte(fmt.Sprintf(`{"result": "%s"}`, out))
+	return mcp.NewToolResultText(string(body)), nil
+}