docs: add disclaimer about WIP (#2)

Author: chr-hertel

README.md

@@ -1,8 +1,10 @@
-# MCP Bundle
+# MCP Bundle [WIP]
 
 Symfony integration bundle for [Model Context Protocol](https://modelcontextprotocol.io/) using the unofficial
 PHP SDK [php-llm/mcp-sdk](https://github.com/php-llm/mcp-sdk) library.
 
+**Currently only supports tools as server via Server-Sent Events (SSE) and STDIO.**
+
 ## Installation
 
 ```bash
@@ -14,30 +16,41 @@ composer require php-llm/mcp-bundle
 At first, you need to decide whether your application should act as a MCP server or client. Both can be configured
 in the `mcp` section of your `config/packages/mcp.yaml` file.
 
+### Act as Server
+
+**Currently only supports tools.**
+
+To use your application as an MCP server, exposing tools to clients like [Claude Desktop](https://claude.ai/download),
+you need to configure in the `client_transports` section the transports you want to expose to clients.
+You can use either STDIO or SSE.
+
 ### Act as Client
 
-To use your application as a MCP client, integrating other MCP servers, you need to configure the `servers` you want to
+**Not implemented yet.**
+
+To use your application as an MCP client, integrating other MCP servers, you need to configure the `servers` you want to
 connect to. You can use either  STDIO or Server-Sent Events (SSE) as transport methods.
 
 You can find a list of example Servers in the [MCP Server List](https://modelcontextprotocol.io/examples).
 
 Tools of those servers are available in your [LLM Chain Bundle](https://github.com/php-llm/llm-chain-bundle)
 configuration and usable in your chains.
 
-### Act as Server
-
-To use your application as an MCP server, exposing tools to clients like [Claude Desktop](https://claude.ai/download),
-you need to configure in the `client_transports` section the transports you want to expose to clients.
-You can use either STDIO or SSE.
-
 ## Configuration
 
 ```yaml
 mcp:
     app: 'app' # Application name to be exposed to clients
     version: '1.0.0' # Application version to be exposed to clients
+
+    # Configure this application to act as an MCP server
+    # Currently exposes tools registered in LLM Chain
+    client_transports:
+        stdio: true # Enable STDIO via command
+        sse: true # Enable Server-Sent Event via controller
 
     # Configure MCP servers to be used by this application
+    # Not implemented yet
     servers:
         name:
             transport: 'stdio' # Transport method to use, either 'stdio' or 'sse'
@@ -46,9 +59,5 @@ mcp:
                 arguments: [] # Arguments to pass to the command
             sse:
                 url: 'http://localhost:8000/sse' # URL to SSE endpoint of MCP server
-        
-    # Configure this application to act as an MCP server
-    client_transports:
-        stdio: true # Enable STDIO via command
-        sse: true # Enable Server-Sent Event via controller
+
 ```