diff --git a/tools/skap/include/skap_defines.h b/tools/skap/include/skap_defines.h
new file mode 100644
index 0000000..ec72edc
--- /dev/null
+++ b/tools/skap/include/skap_defines.h
@@ -0,0 +1,27 @@
+/*
+ * GNU Sparky --- A 5v5 character-based libre tactical shooter
+ * Copyright (C) 2024 Wasym A. Alonso
+ *
+ * This file is part of Sparky.
+ *
+ * Sparky is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Sparky is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Sparky.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#pragma once
+
+#include <stdint.h>
+
+typedef uint8_t u8;
+typedef uint64_t u64;
diff --git a/tools/skap/include/skap_header.h b/tools/skap/include/skap_header.h
new file mode 100644
index 0000000..9bcf113
--- /dev/null
+++ b/tools/skap/include/skap_header.h
@@ -0,0 +1,32 @@
+/*
+ * GNU Sparky --- A 5v5 character-based libre tactical shooter
+ * Copyright (C) 2024 Wasym A. Alonso
+ *
+ * This file is part of Sparky.
+ *
+ * Sparky is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Sparky is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Sparky.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#pragma once
+
+#include <skap_defines.h>
+
+typedef struct {
+  char signature[4];
+  u8 fmt_ver;
+  u64 build_ver;
+} skap_header;
+
+skap_header skap_header_create(void);
diff --git a/tools/skap/src/skap.c b/tools/skap/src/skap.c
index f775530..ad958c0 100644
--- a/tools/skap/src/skap.c
+++ b/tools/skap/src/skap.c
@@ -19,48 +19,11 @@
  */
 
 
-#include <time.h>
 #include <stdio.h>
-#include <stdint.h>
-
-typedef uint8_t u8;
-typedef uint64_t u64;
-
-typedef struct {
-  char signature[4];
-  u8 fmt_ver;
-  u64 build_ver;
-} skap_header;
-
-static u64 concat_num(u64 x, u64 y) {
-  u64 n = 10;
-  while (y >= n) n *= 10;
-  return n * x + y;
-}
-
-static u64 compute_build_ver(void) {
-  time_t t = time(0);
-  struct tm *t_spec = localtime(&t);
-  u64 t_spec_arr[] = {
-    t_spec->tm_mon + 1,
-    t_spec->tm_mday,
-    t_spec->tm_hour,
-    t_spec->tm_min
-  };
-  u64 build_ver = t_spec->tm_year + 1900;
-  for (size_t i = 0; i < 4; ++i) {
-    if (t_spec_arr[i] < 10) build_ver *= 10;
-    build_ver = concat_num(build_ver, t_spec_arr[i]);
-  }
-  return build_ver;
-}
+#include <skap_header.h>
 
 int main(void) {
-  skap_header header = {
-    .signature = { 'S', 'K', 'A', 'P' },
-    .fmt_ver = 1,
-    .build_ver = compute_build_ver()
-  };
+  skap_header header = skap_header_create();
   printf("header.signature => %s\n", header.signature);
   printf("header.fmt_ver => %hhu\n", header.fmt_ver);
   printf("header.build_ver => %ld\n", header.build_ver);
diff --git a/tools/skap/src/skap_header.c b/tools/skap/src/skap_header.c
new file mode 100644
index 0000000..d91a011
--- /dev/null
+++ b/tools/skap/src/skap_header.c
@@ -0,0 +1,54 @@
+/*
+ * GNU Sparky --- A 5v5 character-based libre tactical shooter
+ * Copyright (C) 2024 Wasym A. Alonso
+ *
+ * This file is part of Sparky.
+ *
+ * Sparky is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Sparky is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Sparky.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include <time.h>
+#include <skap_header.h>
+
+static u64 concat_num(u64 x, u64 y) {
+  u64 n = 10;
+  while (y >= n) n *= 10;
+  return n * x + y;
+}
+
+static u64 compute_build_ver(void) {
+  time_t t = time(0);
+  struct tm *t_spec = localtime(&t);
+  u64 t_spec_arr[] = {
+    t_spec->tm_mon + 1,
+    t_spec->tm_mday,
+    t_spec->tm_hour,
+    t_spec->tm_min
+  };
+  u64 build_ver = t_spec->tm_year + 1900;
+  for (size_t i = 0; i < 4; ++i) {
+    if (t_spec_arr[i] < 10) build_ver *= 10;
+    build_ver = concat_num(build_ver, t_spec_arr[i]);
+  }
+  return build_ver;
+}
+
+skap_header skap_header_create(void) {
+  return (skap_header) {
+    .signature = { 'S', 'K', 'A', 'P' },
+    .fmt_ver = 1,
+    .build_ver = compute_build_ver()
+  };
+}