diff --git a/.gitignore b/.gitignore
index dee9eb0..d75087c 100755
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 .idea/
 docs/build
 dist/
+.ruff_cache/
\ No newline at end of file
diff --git a/mystbin/client.py b/mystbin/client.py
index ddb48bb..e4530e0 100755
--- a/mystbin/client.py
+++ b/mystbin/client.py
@@ -38,10 +38,23 @@
 
 
 class Client:
+    """
+    The main client class that interacts with the mystb.in API.
+
+    Parameters
+    -----------
+    session: Optional[:class:`aiohttp.ClientSession`]
+        The session to use for the HTTP requests.
+        If not provided, a new session will be created.
+    api_base: :class:`str`
+        The base URL for the mystbin instance.
+        Defaults to ``https://mystb.in/``.
+        This should begin with ``https://`` and should be the root URL of the mystbin instance.
+    """
     __slots__ = ("http",)
 
-    def __init__(self, *, session: ClientSession | None = None) -> None:
-        self.http: HTTPClient = HTTPClient(session=session)
+    def __init__(self, *, session: ClientSession | None = None, api_base: str = "https://mystb.in/") -> None:
+        self.http: HTTPClient = HTTPClient(session=session, api_base=api_base)
 
     async def __aenter__(self) -> Self:
         return self
diff --git a/mystbin/http.py b/mystbin/http.py
index c49d877..90fe1a0 100755
--- a/mystbin/http.py
+++ b/mystbin/http.py
@@ -107,14 +107,15 @@ def __exit__(
 
 class Route:
     __slots__ = (
-        "verb",
         "path",
         "url",
+        "verb",
     )
 
     API_BASE: ClassVar[str] = "https://mystb.in/api"
 
     def __init__(self, verb: SupportedHTTPVerb, path: str, **params: Any) -> None:
+
         self.verb: SupportedHTTPVerb = verb
         self.path: str = path
         url = self.API_BASE + path
@@ -122,23 +123,31 @@ def __init__(self, verb: SupportedHTTPVerb, path: str, **params: Any) -> None:
             url = url.format_map({k: _uriquote(v) if isinstance(v, str) else v for k, v in params.items()})
         self.url: str = url
 
-
 class HTTPClient:
     __slots__ = (
-        "_session",
-        "_owns_session",
         "_async",
-        "_token",
         "_locks",
-        "user_agent",
+        "_owns_session",
+        "_session",
+        "_token",
+        "api_base",
+        "user_agent"
     )
 
-    def __init__(self, *, session: aiohttp.ClientSession | None = None) -> None:
+    def __init__(self, *, session: aiohttp.ClientSession | None = None, api_base: str | None = None) -> None:
         self._session: aiohttp.ClientSession | None = session
         self._owns_session: bool = False
         self._locks: weakref.WeakValueDictionary[str, asyncio.Lock] = weakref.WeakValueDictionary()
         user_agent = "mystbin.py (https://github.com/PythonistaGuild/mystbin.py {0}) Python/{1[0]}.{1[1]} aiohttp/{2}"
         self.user_agent: str = user_agent.format(__version__, sys.version_info, aiohttp.__version__)
+        self._resolve_api(api_base)
+
+    def _resolve_api(self, api: str | None) -> None:
+        if api:
+            Route.API_BASE = api + "api" if api.endswith("/") else api + "/api"
+            self.api_base = api + ("/" if not api.endswith("/") else "")
+        else:
+            self.api_base = "https://mystb.in/"
 
     async def close(self) -> None:
         if self._session and self._owns_session:
diff --git a/mystbin/paste.py b/mystbin/paste.py
index ddb9923..85942db 100755
--- a/mystbin/paste.py
+++ b/mystbin/paste.py
@@ -57,12 +57,12 @@ class File:
     """
 
     __slots__ = (
-        "filename",
-        "content",
-        "_lines_of_code",
+        "_annotation",
         "_character_count",
+        "_lines_of_code",
         "_parent_id",
-        "_annotation",
+        "content",
+        "filename",
     )
 
     def __init__(self, *, filename: str, content: str) -> None:
@@ -107,7 +107,7 @@ class Paste:
     _views: int | None
     _security: str | None
 
-    """Represents a Paste object from mystb.in.
+    """Represents a Paste object from mystbin instances.
 
     Attributes
     -----------
@@ -120,14 +120,14 @@ class Paste:
     """
 
     __slots__ = (
-        "id",
+        "_expires",
+        "_http",
+        "_security",
+        "_views",
         "author_id",
         "created_at",
         "files",
-        "_security",
-        "_expires",
-        "_views",
-        "_http",
+        "id",
     )
 
     def __init__(self, *, http: HTTPClient, id: str, created_at: str, files: Sequence[File]) -> None:
@@ -144,7 +144,7 @@ def __repr__(self) -> str:
 
     @property
     def url(self) -> str:
-        return f"https://mystb.in/{self.id}"
+        return f"{self._http.api_base}{self.id}"
 
     @property
     def expires(self) -> datetime.datetime | None:
diff --git a/mystbin/types/responses.py b/mystbin/types/responses.py
index 7957f0a..ecec910 100755
--- a/mystbin/types/responses.py
+++ b/mystbin/types/responses.py
@@ -25,9 +25,9 @@
 from typing import TypedDict
 
 __all__ = (
+    "CreatePasteResponse",
     "FileResponse",
     "GetPasteResponse",
-    "CreatePasteResponse",
 )
 
 
diff --git a/pyproject.toml b/pyproject.toml
index 56b7f3e..03ec658 100755
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -95,8 +95,6 @@ ignore = [
     "SIM105",
     "UP034",
     "UP038",
-    "ANN101",
-    "ANN102",
     "ANN401",
 ]