diff --git a/backend/api/__init__.py b/backend/api/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/backend/api/admin.py b/backend/api/admin.py
new file mode 100644
index 0000000..023e1c5
--- /dev/null
+++ b/backend/api/admin.py
@@ -0,0 +1,11 @@
+from django.contrib import admin
+
+from api.models import *
+
+# Register your models here.
+
+admin.site.register(Team)
+admin.site.register(Player)
+admin.site.register(PlayerInfo)
+admin.site.register(PlayerInfo_Team)
+admin.site.register(PlayerRole)
diff --git a/backend/api/apps.py b/backend/api/apps.py
new file mode 100644
index 0000000..66656fd
--- /dev/null
+++ b/backend/api/apps.py
@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class ApiConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'api'
diff --git a/backend/api/migrations/0001_initial.py b/backend/api/migrations/0001_initial.py
new file mode 100644
index 0000000..fff5632
--- /dev/null
+++ b/backend/api/migrations/0001_initial.py
@@ -0,0 +1,70 @@
+# Generated by Django 5.1.2 on 2024-10-24 01:56
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Player',
+            fields=[
+                ('steam_id', models.BigIntegerField(primary_key=True, serialize=False)),
+                ('name', models.CharField(max_length=63)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='PlayerInfo_Team',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('team_role', models.CharField(choices=[('PL', 'Player'), ('CM', 'Coach/Mentor'), ('TC', 'Team Captain')], default='PL', max_length=2)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Team',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('team_name', models.CharField(max_length=63)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='PlayerInfo',
+            fields=[
+                ('player', models.OneToOneField(on_delete=django.db.models.deletion.CASCADE, primary_key=True, serialize=False, to='api.player')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='PlayerRole',
+            fields=[
+                ('playerinfo_team', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, primary_key=True, serialize=False, to='api.playerinfo_team')),
+                ('player_role', models.CharField(choices=[('P_SCOUT', 'Pocket Scout'), ('F_SCOUT', 'Flank Scout'), ('SCOUT', 'Scout'), ('P_SOLLY', 'Pocket Soldier'), ('ROAMER', 'Roamer'), ('SOLDIER', 'Soldier'), ('PYRO', 'Pyro'), ('DEMO', 'Demoman'), ('HEAVY', 'Heavy'), ('ENGIE', 'Engineer'), ('MEDIC', 'Medic'), ('SNIPER', 'Sniper'), ('SPY', 'Spy')], max_length=7)),
+                ('main', models.BooleanField(default=True)),
+            ],
+        ),
+        migrations.AddField(
+            model_name='playerinfo_team',
+            name='team',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, to='api.team'),
+        ),
+        migrations.AddField(
+            model_name='playerinfo_team',
+            name='player_info',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='api.playerinfo'),
+        ),
+        migrations.AddField(
+            model_name='playerinfo',
+            name='team',
+            field=models.ManyToManyField(through='api.PlayerInfo_Team', to='api.team'),
+        ),
+        migrations.AlterUniqueTogether(
+            name='playerinfo_team',
+            unique_together={('player_info', 'team')},
+        ),
+    ]
diff --git a/backend/api/migrations/0002_alter_playerinfo_team_team_role.py b/backend/api/migrations/0002_alter_playerinfo_team_team_role.py
new file mode 100644
index 0000000..3ea0596
--- /dev/null
+++ b/backend/api/migrations/0002_alter_playerinfo_team_team_role.py
@@ -0,0 +1,18 @@
+# Generated by Django 5.1.2 on 2024-10-24 02:00
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='playerinfo_team',
+            name='team_role',
+            field=models.CharField(choices=[('PL', 'Player'), ('CM', 'Coach/Mentor'), ('TL', 'Team Leader')], default='PL', max_length=2),
+        ),
+    ]
diff --git a/backend/api/migrations/0003_playermasteravailability_playerteamavailability.py b/backend/api/migrations/0003_playermasteravailability_playerteamavailability.py
new file mode 100644
index 0000000..c030f5f
--- /dev/null
+++ b/backend/api/migrations/0003_playermasteravailability_playerteamavailability.py
@@ -0,0 +1,36 @@
+# Generated by Django 5.1.2 on 2024-10-24 02:18
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0002_alter_playerinfo_team_team_role'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='PlayerMasterAvailability',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('start_time', models.DateTimeField()),
+                ('playerinfo', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='api.playerinfo')),
+            ],
+            options={
+                'constraints': [models.UniqueConstraint(fields=('playerinfo', 'start_time'), name='unique_master_availability')],
+            },
+        ),
+        migrations.CreateModel(
+            name='PlayerTeamAvailability',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('start_time', models.DateTimeField()),
+                ('playerinfo_team', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='api.playerinfo_team')),
+            ],
+            options={
+                'constraints': [models.UniqueConstraint(fields=('playerinfo_team', 'start_time'), name='unique_team_availability')],
+            },
+        ),
+    ]
diff --git a/backend/api/migrations/0004_remove_playermasteravailability_unique_master_availability_and_more.py b/backend/api/migrations/0004_remove_playermasteravailability_unique_master_availability_and_more.py
new file mode 100644
index 0000000..e2b1caa
--- /dev/null
+++ b/backend/api/migrations/0004_remove_playermasteravailability_unique_master_availability_and_more.py
@@ -0,0 +1,39 @@
+# Generated by Django 5.1.2 on 2024-10-24 02:21
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0003_playermasteravailability_playerteamavailability'),
+    ]
+
+    operations = [
+        migrations.RemoveConstraint(
+            model_name='playermasteravailability',
+            name='unique_master_availability',
+        ),
+        migrations.RemoveConstraint(
+            model_name='playerteamavailability',
+            name='unique_team_availability',
+        ),
+        migrations.RenameField(
+            model_name='playermasteravailability',
+            old_name='playerinfo',
+            new_name='player_info',
+        ),
+        migrations.RenameField(
+            model_name='playerteamavailability',
+            old_name='playerinfo_team',
+            new_name='player_info_team',
+        ),
+        migrations.AddConstraint(
+            model_name='playermasteravailability',
+            constraint=models.UniqueConstraint(fields=('player_info', 'start_time'), name='unique_master_availability'),
+        ),
+        migrations.AddConstraint(
+            model_name='playerteamavailability',
+            constraint=models.UniqueConstraint(fields=('player_info_team', 'start_time'), name='unique_team_availability'),
+        ),
+    ]
diff --git a/backend/api/migrations/__init__.py b/backend/api/migrations/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/backend/api/models.py b/backend/api/models.py
new file mode 100644
index 0000000..a3fa80c
--- /dev/null
+++ b/backend/api/models.py
@@ -0,0 +1,121 @@
+from typing import override
+from django.db import models
+from cpkmodel import CPkModel
+from django.db.models.constraints import UniqueConstraint
+
+class Team(models.Model):
+    team_name = models.CharField(max_length=63)
+
+    @override
+    def __str__(self) -> str:
+        return str(self.team_name)
+
+class Player(models.Model):
+    steam_id = models.BigIntegerField(primary_key=True)
+    name = models.CharField(max_length=63)
+
+    @override
+    def __str__(self) -> str:
+        return f"{self.name}#{self.steam_id}"
+
+class PlayerInfo(models.Model):
+    player = models.OneToOneField(
+        Player,
+        on_delete=models.CASCADE,
+        null=False,
+        primary_key=True
+    )
+    team = models.ManyToManyField(Team, through="PlayerInfo_Team")
+
+    @override
+    def __str__(self) -> str:
+        return str(self.player)
+
+class PlayerInfo_Team(models.Model):
+    class TeamRole(models.TextChoices):
+        PLAYER = "PL", "Player"
+        COACH_MENTOR = "CM", "Coach/Mentor"
+        TEAM_LEADER = "TL", "Team Leader"
+
+    player_info = models.ForeignKey(PlayerInfo, on_delete=models.CASCADE)
+    team = models.ForeignKey(Team, on_delete=models.CASCADE, null=True)
+    team_role = models.CharField(
+        max_length=2,
+        choices=TeamRole.choices,
+        default=TeamRole.PLAYER
+    )
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    @override
+    def __str__(self) -> str:
+        return f"{self.player_info} in {self.team} as {self.team_role}"
+
+    class Meta:
+        unique_together = (("player_info", "team"),)
+
+class PlayerRole(models.Model):
+    class Role(models.TextChoices):
+        P_SCOUT = "P_SCOUT", "Pocket Scout"
+        F_SCOUT = "F_SCOUT", "Flank Scout"
+        SCOUT = "SCOUT", "Scout"
+
+        P_SOLLY = "P_SOLLY", "Pocket Soldier"
+        ROAMER = "ROAMER", "Roamer"
+        SOLDIER = "SOLDIER", "Soldier"
+
+        PYRO = "PYRO", "Pyro"
+        DEMO = "DEMO", "Demoman"
+        HEAVY = "HEAVY", "Heavy"
+        ENGIE = "ENGIE", "Engineer"
+        MEDIC = "MEDIC", "Medic"
+        SNIPER = "SNIPER", "Sniper"
+        SPY = "SPY", "Spy"
+
+    playerinfo_team = models.ForeignKey(
+        PlayerInfo_Team,
+        on_delete=models.CASCADE,
+        primary_key=True,
+    )
+    player_role = models.CharField(
+        max_length=7,
+        choices=Role.choices,
+    )
+    main = models.BooleanField(default=True)
+
+    @override
+    def __str__(self) -> str:
+        return f"{self.playerinfo_team.player_info} ({self.player_role} for {self.playerinfo_team.team})"
+
+class PlayerTeamAvailability(models.Model):
+    player_info_team = models.ForeignKey(PlayerInfo_Team, on_delete=models.CASCADE)
+    date = models.DateField()
+    hour = models.SmallIntegerField()
+
+    class Meta:
+        constraints = [
+            UniqueConstraint(fields=[
+                "player_info_team",
+                "start_time"
+            ], name="unique_team_availability")
+        ]
+
+    @override
+    def __str__(self) -> str:
+        return f"{self.player_info_team} available on {self.start_time}"
+
+class PlayerMasterAvailability(models.Model):
+    player_info = models.ForeignKey(PlayerInfo, on_delete=models.CASCADE)
+    date = models.DateField()
+    hour = models.SmallIntegerField()
+
+    class Meta:
+        constraints = [
+            UniqueConstraint(fields=[
+                "player_info",
+                "start_time"
+            ], name="unique_master_availability")
+        ]
+
+    @override
+    def __str__(self) -> str:
+        return f"{self.player_info} available on {self.start_time}"
diff --git a/backend/api/tests.py b/backend/api/tests.py
new file mode 100644
index 0000000..7ce503c
--- /dev/null
+++ b/backend/api/tests.py
@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.
diff --git a/backend/api/views.py b/backend/api/views.py
new file mode 100644
index 0000000..91ea44a
--- /dev/null
+++ b/backend/api/views.py
@@ -0,0 +1,3 @@
+from django.shortcuts import render
+
+# Create your views here.
diff --git a/backend/availabili_tf/settings.py b/backend/availabili_tf/settings.py
index 521cad8..f1c6796 100644
--- a/backend/availabili_tf/settings.py
+++ b/backend/availabili_tf/settings.py
@@ -37,6 +37,8 @@ INSTALLED_APPS = [
     'django.contrib.sessions',
     'django.contrib.messages',
     'django.contrib.staticfiles',
+    'rest_framework',
+    'api',
 ]
 
 MIDDLEWARE = [
diff --git a/backend/availabili_tf/urls.py b/backend/availabili_tf/urls.py
index 3aa1e7a..e59b179 100644
--- a/backend/availabili_tf/urls.py
+++ b/backend/availabili_tf/urls.py
@@ -18,5 +18,6 @@ from django.contrib import admin
 from django.urls import path
 
 urlpatterns = [
-    path('admin/', admin.site.urls),
+    path("admin/", admin.site.urls),
+    path("/", admin.site.urls),
 ]