diff --git a/docs/my-website/docs/proxy/enterprise.md b/docs/my-website/docs/proxy/enterprise.md
index 3e97780213..a4f3ea7b17 100644
--- a/docs/my-website/docs/proxy/enterprise.md
+++ b/docs/my-website/docs/proxy/enterprise.md
@@ -1,7 +1,7 @@
 import Tabs from '@theme/Tabs';
 import TabItem from '@theme/TabItem';
 
-# ✨ Enterprise Features - Content Moderation, Blocked Users/Keywords
+# ✨ Enterprise Features - End-user Opt-out, Content Mod
 
 Features here are behind a commercial license in our `/enterprise` folder. [**See Code**](https://github.com/BerriAI/litellm/tree/main/enterprise)
 
@@ -167,6 +167,29 @@ curl --location 'http://0.0.0.0:8000/chat/completions' \
 
 :::
 
+### Using via API
+
+
+**Block all calls for a user id**
+
+```
+curl -X POST "http://0.0.0.0:8000/user/block" \
+-H "Authorization: Bearer sk-1234" \ 
+-D '{
+"user_ids": [<user_id>, ...] 
+}'
+```
+
+**Unblock calls for a user id**
+
+```
+curl -X POST "http://0.0.0.0:8000/user/unblock" \
+-H "Authorization: Bearer sk-1234" \ 
+-D '{
+"user_ids": [<user_id>, ...] 
+}'
+```
+
 ## Enable Banned Keywords List
 
 ```yaml 
diff --git a/litellm/proxy/_types.py b/litellm/proxy/_types.py
index 7f453980fb..029f35867e 100644
--- a/litellm/proxy/_types.py
+++ b/litellm/proxy/_types.py
@@ -116,6 +116,10 @@ class ModelInfo(LiteLLMBase):
         return values
 
 
+class BlockUsers(LiteLLMBase):
+    user_ids: List[str]  # required
+
+
 class ModelParams(LiteLLMBase):
     model_name: str
     litellm_params: dict
diff --git a/litellm/proxy/proxy_server.py b/litellm/proxy/proxy_server.py
index 14f8bc96ca..939dd244a6 100644
--- a/litellm/proxy/proxy_server.py
+++ b/litellm/proxy/proxy_server.py
@@ -4307,6 +4307,93 @@ async def user_get_requests():
         )
 
 
+@router.post(
+    "/user/block",
+    tags=["user management"],
+    dependencies=[Depends(user_api_key_auth)],
+)
+async def block_user(data: BlockUsers):
+    """
+    [BETA] Reject calls with this user id
+
+    ```
+    curl -X POST "http://0.0.0.0:8000/user/block"
+    -H "Authorization: Bearer sk-1234"
+    -D '{
+    "user_ids": [<user_id>, ...]
+    }'
+    ```
+    """
+    from litellm.proxy.enterprise.enterprise_hooks.blocked_user_list import (
+        _ENTERPRISE_BlockedUserList,
+    )
+
+    if not any(isinstance(x, _ENTERPRISE_BlockedUserList) for x in litellm.callbacks):
+        blocked_user_list = _ENTERPRISE_BlockedUserList()
+        litellm.callbacks.append(blocked_user_list)  # type: ignore
+
+    if litellm.blocked_user_list is None:
+        litellm.blocked_user_list = data.user_ids
+    elif isinstance(litellm.blocked_user_list, list):
+        litellm.blocked_user_list = litellm.blocked_user_list + data.user_ids
+    else:
+        raise HTTPException(
+            status_code=500,
+            detail={
+                "error": "`blocked_user_list` must be a list or not set. Filepaths can't be updated."
+            },
+        )
+
+    return {"blocked_users": litellm.blocked_user_list}
+
+
+@router.post(
+    "/user/unblock",
+    tags=["user management"],
+    dependencies=[Depends(user_api_key_auth)],
+)
+async def unblock_user(data: BlockUsers):
+    """
+    [BETA] Unblock calls with this user id
+
+    Example
+    ```
+    curl -X POST "http://0.0.0.0:8000/user/unblock"
+    -H "Authorization: Bearer sk-1234"
+    -D '{
+    "user_ids": [<user_id>, ...]
+    }'
+    ```
+    """
+    from litellm.proxy.enterprise.enterprise_hooks.blocked_user_list import (
+        _ENTERPRISE_BlockedUserList,
+    )
+
+    if (
+        not any(isinstance(x, _ENTERPRISE_BlockedUserList) for x in litellm.callbacks)
+        or litellm.blocked_user_list is None
+    ):
+        raise HTTPException(
+            status_code=400,
+            detail={
+                "error": "Blocked user check was never set. This call has no effect."
+            },
+        )
+
+    if isinstance(litellm.blocked_user_list, list):
+        for id in data.user_ids:
+            litellm.blocked_user_list.remove(id)
+    else:
+        raise HTTPException(
+            status_code=500,
+            detail={
+                "error": "`blocked_user_list` must be set as a list. Filepaths can't be updated."
+            },
+        )
+
+    return {"blocked_users": litellm.blocked_user_list}
+
+
 #### TEAM MANAGEMENT ####
 
 
diff --git a/litellm/utils.py b/litellm/utils.py
index 0f54a6ba58..38ca669fc7 100644
--- a/litellm/utils.py
+++ b/litellm/utils.py
@@ -4306,6 +4306,7 @@ def get_optional_params(
         or model in litellm.vertex_language_models
         or model in litellm.vertex_embedding_models
     ):
+        print_verbose(f"(start) INSIDE THE VERTEX AI OPTIONAL PARAM BLOCK")
         ## check if unsupported param passed in
         supported_params = [
             "temperature",
@@ -4339,6 +4340,9 @@ def get_optional_params(
             optional_params["tools"] = [
                 generative_models.Tool(function_declarations=gtool_func_declarations)
             ]
+        print_verbose(
+            f"(end) INSIDE THE VERTEX AI OPTIONAL PARAM BLOCK - optional_params: {optional_params}"
+        )
     elif custom_llm_provider == "sagemaker":
         ## check if unsupported param passed in
         supported_params = ["stream", "temperature", "max_tokens", "top_p", "stop", "n"]
@@ -4754,6 +4758,7 @@ def get_optional_params(
             extra_body  # openai client supports `extra_body` param
         )
     else:  # assume passing in params for openai/azure openai
+        print_verbose(f"UNMAPPED PROVIDER, ASSUMING IT'S OPENAI/AZUREs")
         supported_params = [
             "functions",
             "function_call",
@@ -4829,6 +4834,7 @@ def get_optional_params(
         for k in passed_params.keys():
             if k not in default_params.keys():
                 optional_params[k] = passed_params[k]
+    print_verbose(f"Final returned optional params: {optional_params}")
     return optional_params