diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 4d8e2f2..0cb2f3c 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -15,3 +15,7 @@ repos:
         args: ["--max-line-length=88", "--extend-ignore=E203"]
         exclude: "lyceedupaysdesoule/settings/|migrations"
 
+  - repo: https://github.com/pre-commit/mirrors-mypy
+    rev: "v1.13.0"
+    hooks:
+    - id: mypy
diff --git a/config.toml b/config.toml
new file mode 100644
index 0000000..516ba25
--- /dev/null
+++ b/config.toml
@@ -0,0 +1,4 @@
+[mqtt]
+username = "oin"
+password = "n+Bi58l7LxbH5nEJ"
+host = "homeassistant.local"
diff --git a/oin_thermostat/__main__.py b/oin_thermostat/__main__.py
index 853abdb..1e497d7 100644
--- a/oin_thermostat/__main__.py
+++ b/oin_thermostat/__main__.py
@@ -1,13 +1,18 @@
 import logging
+import tomllib
 
 from .mqtt import HAClient
 
 if __name__ == "__main__":
+    with open("config.toml", "rb") as config_file:
+        config = tomllib.load(config_file)
+
     logging.basicConfig(level=logging.DEBUG)
 
     client = HAClient(
         "climate.chaudiere",
         ["sensor.esptic_tempo", "sensor.rte_tempo_prochaine_couleur"],
+        config.get("mqtt", dict()),
     )
 
     client.connect()
diff --git a/oin_thermostat/mqtt.py b/oin_thermostat/mqtt.py
index 7a71055..abf34ff 100644
--- a/oin_thermostat/mqtt.py
+++ b/oin_thermostat/mqtt.py
@@ -10,21 +10,30 @@ logger = logging.getLogger(__name__)
 
 
 class HAClient:
-    def __init__(self, entity, secondary_entities=[]):
+    def __init__(
+        self,
+        entity: str,
+        secondary_entities: list[str] = [],
+        config: dict = dict(),
+    ) -> None:
         self.entity = entity
         self.secondary_entities = secondary_entities
+        self.config = config
 
         self.state_topic = "oin/state"
         self.availability_topic = "oin/availability"
 
         self.client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
-        self.client.username_pw_set(username="oin", password="n+Bi58l7LxbH5nEJ")
+        self.client.username_pw_set(
+            username=self.config.get("username", None),
+            password=self.config.get("password", None),
+        )
 
         self.screen = Screen()
         self.selector = Selector(self.send_data)
 
     @property
-    def ha_options(self):
+    def ha_options(self) -> dict[str, str | dict[str, str]]:
         return {
             "dev": {
                 "ids": "oin",
@@ -38,10 +47,10 @@ class HAClient:
             "cmps": self.selector.ha_options,
         }
 
-    def connect(self):
+    def connect(self) -> None:
         logger.debug("Connecting to HA...")
         self.client.will_set(self.availability_topic, "offline", retain=True)
-        self.client.connect("homeassistant.local", 1883, 60)
+        self.client.connect(self.config.get("host"), self.config.get("port", 1883))
 
         self.subscribe(entity_topic(self.entity), self.state_update)
         for entity in self.secondary_entities: