diff --git a/mtool/main.go b/mtool/main.go
index 1679bb4..763bf35 100644
--- a/mtool/main.go
+++ b/mtool/main.go
@@ -9,21 +9,21 @@ import (
 	"time"
 )
 
-
 type Flags struct {
 	*flag.FlagSet
-	tool *Tool
-	args []string
+	tool       *Tool
+	args       []string
 	parsedArgs []string
-	envNameMap map[string] []string
-	envMap map[string]string
+	customArgs []any
+	envNameMap map[string][]string
+	envMap     map[string]string
 }
 
-type ToolMap map[string] *Tool
+type ToolMap map[string]*Tool
 
 func (flags *Flags) wasPassed(name string) bool {
 	found := false
-	flags.Visit(func(f *flag.Flag){
+	flags.Visit(func(f *flag.Flag) {
 		if f.Name == name {
 			found = true
 		}
@@ -150,4 +150,3 @@ func (flags *Flags) Args() []string {
 func (flags *Flags) Tool() *Tool {
 	return flags.tool
 }
-
diff --git a/mtool/tool.go b/mtool/tool.go
index 7115bed..f1ee9cd 100644
--- a/mtool/tool.go
+++ b/mtool/tool.go
@@ -1,13 +1,13 @@
 package mtool
 
 import (
-	"text/tabwriter"
-	"strings"
 	"flag"
-	"sort"
 	"fmt"
 	"io"
 	"os"
+	"sort"
+	"strings"
+	"text/tabwriter"
 )
 
 type Tool struct {
@@ -107,7 +107,7 @@ func (t *Tool) PrintSubs(out io.Writer) {
 	}
 }
 
-func (t *Tool) Run(args []string) {
+func (t *Tool) Run(args []string, customArgs ...any) {
 	var(
 		usageTool *Tool
 	)
@@ -120,6 +120,7 @@ func (t *Tool) Run(args []string) {
 		FlagSet : flagSet,
 		envMap: make(map[string]string),
 		envNameMap: make(map[string] []string),
+		customArgs: customArgs,
 	}
 	out := flags.Output()
 	flags.Usage = func() {
@@ -150,7 +151,7 @@ func (t *Tool) Run(args []string) {
 				usageTool.FullName(), FormatInCode(t.desc, true),
 			)
 		}
-		
+
 
 		// Usage
 		fmt.Fprintf(
@@ -160,7 +161,7 @@ func (t *Tool) Run(args []string) {
 		if hasOptions {
 			fmt.Fprintf(out, " [options]")
 		}
-		
+
 		if usageTool.usage != "" {
 			fmt.Fprintf(
 				out,
@@ -178,16 +179,16 @@ func (t *Tool) Run(args []string) {
 				FormatInCode(usageTool.ldesc, true),
 			)
 		}
-		
+
 		// Options
 		if hasOptions {
 			fmt.Fprintln(out, "\nOptions:")
 			fmt.Fprintln(out, "  -- option terminator")
 			flags.PrintDefaults()
 		}
-		
+
 	}
-	
+
 	flags.args = args
 
 	// If the tool has its own handler run it.
@@ -234,12 +235,12 @@ func (t *Tool) Run(args []string) {
 			fmt.Fprint(out, "\nCommands:\n")
 			t.PrintSubs(out)
 		}
-		
+
 		os.Exit(1)
 	}
 	toolName := args[0]
 	args = args[1:]
-	
+
 	if _, ok := t.subs[toolName] ; !ok {
 		fmt.Fprintf(
 			out,
@@ -253,7 +254,7 @@ func (t *Tool) Run(args []string) {
 
 	sub := t.subs[toolName]
 	usageTool = sub
-	sub.Run(args)
+	sub.Run(args, customArgs...)
 }
 
 // Returns the built-in
@@ -278,4 +279,3 @@ func FormatInCode(
 	}
 	return desc
 }
-