diff --git a/README.md b/README.md
index 784c1a1..e4a2ac0 100644
--- a/README.md
+++ b/README.md
@@ -54,6 +54,10 @@ provider = Inventory("steamsupply", "9st947vs0qmgfpeqde1gj92l0oqmhysm")
 # using steam as inventory provider
 provider = Inventory() # or Inventory("steamcommunity")
 
+# using a custom api as inventory provider
+# requests will be sent to {url}/inventory/{steam_id}/{app_id}/{context_id}?api_key=apikey
+provider = Inventory("http://localhost:8000", "9st947vs0qmgfpeqde1gj92l0oqmhysm")
+
 # get an inventory
 inventory = provider.fetch("76561198253325712")
 ```
@@ -124,4 +128,4 @@ socket.listen()
 ```bash
 # tf2-utils/
 python -m unittest
-```
\ No newline at end of file
+```
diff --git a/src/tf2_utils/inventory.py b/src/tf2_utils/inventory.py
index 0b7a3d6..c0985d7 100644
--- a/src/tf2_utils/inventory.py
+++ b/src/tf2_utils/inventory.py
@@ -1,6 +1,7 @@
 from .providers.steamcommunity import SteamCommunity
 from .providers.steamsupply import SteamSupply
 from .providers.steamapis import SteamApis
+from .providers.custom import Custom
 from .sku import get_sku
 
 import requests
@@ -45,6 +46,11 @@ def __init__(
             # already set
             return
 
+        # if provider_name is a url, assign it as a custom provider address
+        if provider_name.lower().startswith("http"):
+            self.provider = Custom(api_key, provider_name.lower())
+            return
+
         # loop through providers create object
         for i in self.PROVIDERS:
             if provider_name.lower() == i.__name__.lower():
diff --git a/src/tf2_utils/providers/custom.py b/src/tf2_utils/providers/custom.py
new file mode 100644
index 0000000..6e2c1be
--- /dev/null
+++ b/src/tf2_utils/providers/custom.py
@@ -0,0 +1,12 @@
+class Custom:
+    def __init__(self, api_key: str, url: str) -> None:
+        self.api_key = api_key
+        self.url = url.rstrip('/')
+
+    def get_url_and_params(
+        self, steam_id: str, app_id: int, context_id: int
+    ) -> tuple[str, dict]:
+        return (
+            f"{self.url}/inventory/{steam_id}/{app_id}/{context_id}",
+            {"api_key": self.api_key},
+        )