diff --git a/.env.default b/.env.default
new file mode 100644
index 0000000..e69de29
diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..e69de29
diff --git a/__init__.py b/__init__.py
index a149547..7f3881a 100644
--- a/__init__.py
+++ b/__init__.py
@@ -1,3 +1,4 @@
+from .src.config import load_envs
 from .src.nodes import (
     NODE_CLASS_MAPPINGS,
     NODE_DISPLAY_NAME_MAPPINGS,
@@ -7,6 +8,8 @@ from .src.nodes import (
     ComfyUIPipelineDTO,
 )
 
+load_envs()
+
 __all__ = [
     "NODE_CLASS_MAPPINGS",
     "NODE_DISPLAY_NAME_MAPPINGS",
diff --git a/src/config/__init__.py b/src/config/__init__.py
new file mode 100644
index 0000000..279256b
--- /dev/null
+++ b/src/config/__init__.py
@@ -0,0 +1,3 @@
+from ._env import load_envs
+
+__all__ = ["load_envs"]
diff --git a/src/config/_env.py b/src/config/_env.py
new file mode 100644
index 0000000..0858d7f
--- /dev/null
+++ b/src/config/_env.py
@@ -0,0 +1,62 @@
+from __future__ import annotations
+
+import os
+from functools import lru_cache
+from typing import Final
+
+from dotenv import find_dotenv, load_dotenv
+
+from ._path import get_project_root
+
+_TRUE_SET: Final[set[str]] = {"1", "true", "yes", "on"}
+_FALSE_SET: Final[set[str]] = {"0", "false", "no", "off"}
+
+
+@lru_cache(maxsize=1)
+def _load_envs_once() -> None:
+    root = get_project_root()
+    dotenv_path = str(root / ".env")
+    default_dotenv_path = str(root / ".env.default")
+    load_dotenv(find_dotenv(dotenv_path, usecwd=True), override=False)
+    load_dotenv(find_dotenv(default_dotenv_path, usecwd=True), override=False)
+
+
+def load_envs(force: bool = False) -> None:
+    if force:
+        _load_envs_once.cache_clear()
+    _load_envs_once()
+
+
+def get_str(name: str, default: str | None = None) -> str | None:
+    return os.getenv(name, default)
+
+
+def get_bool(name: str, default: bool = False) -> bool:
+    raw = os.getenv(name)
+    if raw is None:
+        return default
+    value = raw.strip().lower()
+    if value in _TRUE_SET:
+        return True
+    if value in _FALSE_SET:
+        return False
+    raise ValueError(f"Environment variable '{name}' has invalid boolean value '{raw}'")
+
+
+def get_int(name: str, default: int | None = None) -> int | None:
+    raw = os.getenv(name)
+    if raw is None:
+        return default
+    try:
+        return int(raw.strip())
+    except (TypeError, ValueError) as err:
+        raise ValueError(
+            f"Environment variable '{name}' has invalid integer value '{raw}'"
+        ) from err
+
+
+def require(name: str) -> str:
+    value = os.getenv(name)
+    if value is None:
+        raise KeyError(f"Required environment variable not set: '{name}'")
+    return value