docs release notes

docs/my-website/docs/mcp.md

@@ -180,8 +180,7 @@ You can choose to access specific MCP servers and only list their tools using th
 - Limit tool access to one or more specific MCP servers
 - Control which tools are available in different environments or use cases
 
-The header accepts either:
-1. A comma-separated list of server names: `"Zapier_Gmail,Server2,Server3"`
+The header accepts a comma-separated list of server names: `"Zapier_Gmail,Server2,Server3"`
 
 Notes:
 - Server names with spaces should be replaced with underscores

docs/my-website/release_notes/v1.74.0-stable/index.md

@@ -50,6 +50,90 @@ pip install litellm==1.74.0.post1
 
 ### MCP Gateway: Segregate MCP tools
 
+MCP Server Segregation is now supported on LiteLLM. This means you can specify the `x-mcp-servers` header to specify which servers to list tools from. This is useful when you want to request tools from only a subset of configured servers — enabling curated toolsets and cleaner control.
+
+#### Usage
+
+<Tabs>
+<TabItem value="openai" label="OpenAI API">
+
+```bash title="cURL Example with Server Segregation" showLineNumbers
+curl --location 'https://api.openai.com/v1/responses' \
+--header 'Content-Type: application/json' \
+--header "Authorization: Bearer $OPENAI_API_KEY" \
+--data '{
+    "model": "gpt-4o",
+    "tools": [
+        {
+            "type": "mcp",
+            "server_label": "litellm",
+            "server_url": "<your-litellm-proxy-base-url>/mcp",
+            "require_approval": "never",
+            "headers": {
+                "x-litellm-api-key": "Bearer YOUR_LITELLM_API_KEY",
+                "x-mcp-servers": "Zapier_Gmail"
+            }
+        }
+    ],
+    "input": "Run available tools",
+    "tool_choice": "required"
+}'
+```
+
+In this example, the request will only have access to tools from the "Zapier_Gmail" MCP server.
+
+</TabItem>
+
+<TabItem value="litellm" label="LiteLLM Proxy">
+
+```bash title="cURL Example with Server Segregation" showLineNumbers
+curl --location '<your-litellm-proxy-base-url>/v1/responses' \
+--header 'Content-Type: application/json' \
+--header "Authorization: Bearer $LITELLM_API_KEY" \
+--data '{
+    "model": "gpt-4o",
+    "tools": [
+        {
+            "type": "mcp",
+            "server_label": "litellm",
+            "server_url": "<your-litellm-proxy-base-url>/mcp",
+            "require_approval": "never",
+            "headers": {
+                "x-litellm-api-key": "Bearer YOUR_LITELLM_API_KEY",
+                "x-mcp-servers": "Zapier_Gmail,Server2"
+            }
+        }
+    ],
+    "input": "Run available tools",
+    "tool_choice": "required"
+}'
+```
+
+This configuration restricts the request to only use tools from the specified MCP servers.
+
+</TabItem>
+
+<TabItem value="cursor" label="Cursor IDE">
+
+```json title="Cursor MCP Configuration with Server Segregation" showLineNumbers
+{
+  "mcpServers": {
+    "LiteLLM": {
+      "url": "<your-litellm-proxy-base-url>/mcp",
+      "headers": {
+        "x-litellm-api-key": "Bearer $LITELLM_API_KEY",
+        "x-mcp-servers": "Zapier_Gmail,Server2"
+      }
+    }
+  }
+}
+```
+
+This configuration in Cursor IDE settings will limit tool access to only the specified MCP server.
+
+</TabItem>
+</Tabs>
+
 ### Team / Key Based Logging on UI
 
 <Image