diff --git a/keyboards/atreus/keymaps/custom/config.h b/keyboards/atreus/keymaps/custom/config.h
new file mode 100644
index 0000000..66437d9
--- /dev/null
+++ b/keyboards/atreus/keymaps/custom/config.h
@@ -0,0 +1,22 @@
+#pragma once
+// Set the mouse settings to a comfortable speed/accuracy trade-off,
+// assuming a screen refresh rate of 60 Htz or higher
+// The default is 50. This makes the mouse ~3 times faster and more accurate
+#define MOUSEKEY_INTERVAL 16
+// The default is 20. Since we made the mouse about 3 times faster with the previous setting,
+// give it more time to accelerate to max speed to retain precise control over short distances.
+#define MOUSEKEY_TIME_TO_MAX 40
+// The default is 300. Let's try and make this as low as possible while keeping the cursor responsive
+#define MOUSEKEY_DELAY 100
+// It makes sense to use the same delay for the mouseweel
+#define MOUSEKEY_WHEEL_DELAY 100
+// The default is 100
+#define MOUSEKEY_WHEEL_INTERVAL 50
+// The default is 40
+#define MOUSEKEY_WHEEL_TIME_TO_MAX 100
+
+// Pick good defaults for enabling homerow modifiers
+#define TAPPING_TERM 150
+// #define PERMISSIVE_HOLD
+// #define QUICK_TAP_TERM 0
+#define PERMISSIVE_HOLD_PER_KEY
diff --git a/keyboards/atreus/keymaps/custom/keymap.c b/keyboards/atreus/keymaps/custom/keymap.c
new file mode 100644
index 0000000..43b342d
--- /dev/null
+++ b/keyboards/atreus/keymaps/custom/keymap.c
@@ -0,0 +1,28 @@
+#include QMK_KEYBOARD_H
+#if __has_include("keymap.h")
+#    include "keymap.h"
+#endif
+#include "permissive_hold.h"
+
+
+/* THIS FILE WAS GENERATED!
+ *
+ * This file was generated by qmk json2c. You may or may not want to
+ * edit it directly.
+ */
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT_pcb_up(KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, LGUI_T(KC_A), LALT_T(KC_S), LSFT_T(KC_D), LCTL_T(KC_F), KC_G, KC_H, LCTL_T(KC_J), LSFT_T(KC_K), LALT_T(KC_L), LGUI_T(KC_SCLN), KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_NO, KC_NO, KC_NO, LT(1,KC_SPC), LT(2,KC_ENT), KC_NO, KC_NO, RALT_T(KC_ESC), LT(1,KC_TAB), KC_NO, KC_NO, KC_NO),
+    [1] = LAYOUT_pcb_up(KC_PSLS, KC_7, KC_8, KC_9, KC_GRV, KC_HOME, KC_PGDN, KC_PGUP, KC_END, KC_PSCR, LSFT(KC_N), KC_4, KC_5, KC_6, KC_0, KC_LEFT, KC_DOWN, KC_UP, KC_RGHT, KC_BSPC, KC_DOT, KC_1, KC_2, KC_3, KC_N, KC_MPLY, KC_VOLD, KC_VOLU, KC_MUTE, KC_DEL, TG(2), KC_INS, KC_LGUI, OSL(2), KC_NUBS, KC_LSFT, KC_TRNS, KC_NUBS, OSL(2), KC_DOT, KC_0, KC_EQL),
+    [2] = LAYOUT_pcb_up(KC_F5, KC_F6, KC_F7, KC_F8, LCTL(KC_RCTL), KC_PWR, KC_SLEP, KC_WAKE, TO(0), MS_WHLU, KC_F1, KC_F2, KC_F3, KC_F4, TO(3), MS_LEFT, MS_DOWN, MS_UP, MS_RGHT, MS_WHLD, KC_F9, KC_F10, KC_F11, KC_F12, TO(4), MS_BTN4, MS_BTN1, MS_BTN3, MS_BTN2, MS_BTN5, QK_BOOT, KC_VOLD, KC_LGUI, KC_TRNS, KC_NO, KC_NO, TO(0), KC_NO, KC_NO, KC_PSCR, KC_SCRL, KC_PAUS),
+    [3] = LAYOUT_pcb_up(KC_Q, KC_C, KC_O, KC_P, KC_W, KC_J, KC_M, KC_D, TO(0), KC_Y, KC_A, KC_S, KC_E, KC_N, KC_F, KC_L, KC_R, KC_T, KC_I, KC_U, KC_Z, KC_X, KC_MINS, KC_V, KC_B, KC_DOT, KC_H, KC_G, KC_COMM, KC_K, KC_NO, KC_NO, KC_NO, LT(1,KC_SPC), LSFT_T(KC_ENT), LSFT_T(KC_ENT), RALT_T(KC_ESC), RALT_T(KC_ESC), LT(1,KC_TAB), KC_NO, KC_NO, TO(0)),
+    [4] = LAYOUT_pcb_up(KC_ESC, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_TAB, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_LSFT, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_LCTL, KC_Z, KC_X, KC_C, KC_SPC, LALT_T(KC_ENT), KC_M, KC_V, KC_B, KC_N, KC_P, TO(0))
+};
+
+
+
+#ifdef OTHER_KEYMAP_C
+#    include OTHER_KEYMAP_C
+#endif // OTHER_KEYMAP_C
+
+
diff --git a/keyboards/atreus/keymaps/custom/permissive_hold.h b/keyboards/atreus/keymaps/custom/permissive_hold.h
new file mode 100644
index 0000000..56b4660
--- /dev/null
+++ b/keyboards/atreus/keymaps/custom/permissive_hold.h
@@ -0,0 +1,13 @@
+bool get_permissive_hold(uint16_t keycode, keyrecord_t *record) {
+    switch (keycode) {
+        case LT(1,KC_SPC):
+        case LT(2,KC_ENT):
+        case RALT_T(KC_ESC):
+        case LT(1,KC_TAB):
+            // Immediately select the hold action when another key is tapped.
+            return true;
+        default:
+            // Do not select the hold action when another key is tapped.
+            return false;
+    }
+}