diff --git a/internal/cli/root.go b/internal/cli/root.go
index 2549840..30d992d 100644
--- a/internal/cli/root.go
+++ b/internal/cli/root.go
@@ -202,19 +202,56 @@ func newProjectNextCmd() *cobra.Command {
 }
 
 func newProjectRemoveCmd() *cobra.Command {
-	return &cobra.Command{
-		Use:   "remove <name>",
+	removeAll := false
+	removeCmd := &cobra.Command{
+		Use:   "remove [name]",
 		Short: "Remove configured project",
-		Args:  cobra.ExactArgs(1),
+		Args: func(cmd *cobra.Command, args []string) error {
+			return validateProjectRemoveArgs(removeAll, cmd, args)
+		},
 		RunE: func(cmd *cobra.Command, args []string) error {
-			if err := withConfigStore(func(store *config.Store) error {
-				return store.RemoveProject(args[0])
-			}); err != nil {
-				return fmt.Errorf("remove project: %w", err)
-			}
-			return nil
+			return runProjectRemove(removeAll, args)
 		},
 	}
+	removeCmd.Flags().BoolVar(&removeAll, "all", false, "Remove all configured projects and tokens")
+
+	return removeCmd
+}
+
+func validateProjectRemoveArgs(removeAll bool, cmd *cobra.Command, args []string) error {
+	if removeAll {
+		if len(args) > 0 {
+			return errors.New("cannot use --all with a project name")
+		}
+		return nil
+	}
+	if len(args) == 0 {
+		return errors.New("specify a project name or use --all")
+	}
+	if len(args) > 1 {
+		return cobra.MaximumNArgs(1)(cmd, args)
+	}
+
+	return nil
+}
+
+func runProjectRemove(removeAll bool, args []string) error {
+	if removeAll {
+		if err := withConfigStore(func(store *config.Store) error {
+			return store.RemoveAllProjects()
+		}); err != nil {
+			return fmt.Errorf("remove projects: %w", err)
+		}
+		return nil
+	}
+
+	if err := withConfigStore(func(store *config.Store) error {
+		return store.RemoveProject(args[0])
+	}); err != nil {
+		return fmt.Errorf("remove project: %w", err)
+	}
+
+	return nil
 }
 
 func runActive(parent context.Context, flags rootFlags) error {
diff --git a/internal/cli/root_test.go b/internal/cli/root_test.go
index 158d432..53ecad9 100644
--- a/internal/cli/root_test.go
+++ b/internal/cli/root_test.go
@@ -166,6 +166,59 @@ func TestProjectCommandsUseNextRemove(t *testing.T) {
 	runRootCommand(t, "project", "remove", "beta")
 }
 
+func TestProjectRemoveAll(t *testing.T) {
+	configPath := filepath.Join(t.TempDir(), "config.json")
+	store := config.NewStoreAtPath(configPath)
+	if err := store.AddProject("alpha", "t1"); err != nil {
+		t.Fatalf("AddProject() error = %v", err)
+	}
+	if err := store.AddProject("beta", "t2"); err != nil {
+		t.Fatalf("AddProject() error = %v", err)
+	}
+
+	restoreStore := overrideConfigStore(func() (*config.Store, error) {
+		return store, nil
+	})
+	defer restoreStore()
+
+	runRootCommand(t, "project", "remove", "--all")
+
+	file, err := store.Load()
+	if err != nil {
+		t.Fatalf("Load() error = %v", err)
+	}
+	if file.ActiveProject != "" {
+		t.Fatalf("ActiveProject = %q, want empty", file.ActiveProject)
+	}
+	if len(file.Projects) != 0 {
+		t.Fatalf("Projects length = %d, want 0", len(file.Projects))
+	}
+}
+
+func TestProjectRemoveValidation(t *testing.T) {
+	configPath := filepath.Join(t.TempDir(), "config.json")
+	store := config.NewStoreAtPath(configPath)
+
+	restoreStore := overrideConfigStore(func() (*config.Store, error) {
+		return store, nil
+	})
+	defer restoreStore()
+
+	cmd := NewRootCmd()
+	cmd.SetArgs([]string{"project", "remove"})
+	err := cmd.Execute()
+	if err == nil || !strings.Contains(err.Error(), "specify a project name or use --all") {
+		t.Fatalf("expected missing-args remove error, got %v", err)
+	}
+
+	cmd = NewRootCmd()
+	cmd.SetArgs([]string{"project", "remove", "alpha", "--all"})
+	err = cmd.Execute()
+	if err == nil || !strings.Contains(err.Error(), "cannot use --all with a project name") {
+		t.Fatalf("expected mixed remove args/flag error, got %v", err)
+	}
+}
+
 func TestRootCommandDefaultRunsActive(t *testing.T) {
 	stdout := setupServerAndStdout(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		switch r.URL.Path {
diff --git a/internal/config/store.go b/internal/config/store.go
index 8314e99..730c5c8 100644
--- a/internal/config/store.go
+++ b/internal/config/store.go
@@ -133,6 +133,10 @@ func (s *Store) RemoveProject(name string) error {
 	return s.Save(file)
 }
 
+func (s *Store) RemoveAllProjects() error {
+	return s.Save(File{})
+}
+
 func (s *Store) UseProject(name string) error {
 	file, err := s.Load()
 	if err != nil {
diff --git a/internal/config/store_test.go b/internal/config/store_test.go
index 500b7a1..4f31c09 100644
--- a/internal/config/store_test.go
+++ b/internal/config/store_test.go
@@ -77,6 +77,37 @@ func TestStoreErrors(t *testing.T) {
 	}
 }
 
+func TestStoreRemoveAllProjects(t *testing.T) {
+	t.Parallel()
+
+	store, _ := newTempStore(t)
+	if err := store.AddProject("alpha", "token-a"); err != nil {
+		t.Fatalf("AddProject() error = %v", err)
+	}
+	if err := store.AddProject("beta", "token-b"); err != nil {
+		t.Fatalf("AddProject() error = %v", err)
+	}
+
+	if err := store.RemoveAllProjects(); err != nil {
+		t.Fatalf("RemoveAllProjects() error = %v", err)
+	}
+
+	file, err := store.Load()
+	if err != nil {
+		t.Fatalf("Load() error = %v", err)
+	}
+	if file.ActiveProject != "" {
+		t.Fatalf("ActiveProject = %q, want empty", file.ActiveProject)
+	}
+	if len(file.Projects) != 0 {
+		t.Fatalf("Projects length = %d, want 0", len(file.Projects))
+	}
+
+	if _, _, err := store.ResolveToken(""); err == nil {
+		t.Fatalf("expected no configured projects error")
+	}
+}
+
 func TestStoreAddProjectUpdatesExisting(t *testing.T) {
 	t.Parallel()