Address feedback: remove stateless_http from examples, keep json_response

Remove stateless_http=True from examples to avoid going "all-in" on
stateless before it's properly documented in the MCP spec. Keep
json_response=True for client compatibility.

Changes:
- Remove stateless_http from quickstart and other examples
- Keep json_response=True as recommended option
- Preserve original streamable_config.py ordering and note

Author: domdomegg

README.md

@@ -1117,7 +1117,7 @@ Note that `uv run mcp run` or `uv run mcp dev` only supports server using FastMC
 
 ### Streamable HTTP Transport
 
-> **Note**: Streamable HTTP transport is the recommended transport for production deployments. Consider using `json_response=True` for compatibility with clients that prefer JSON over SSE.
+> **Note**: Streamable HTTP transport is the recommended transport for production deployments. Use `stateless_http=True` and `json_response=True` for optimal scalability.
 
 <!-- snippet-source examples/snippets/servers/streamable_config.py -->
 ```python
@@ -1128,11 +1128,11 @@ Run from the repository root:
 
 from mcp.server.fastmcp import FastMCP
 
-# With JSON responses instead of SSE (recommended for compatibility)
-mcp = FastMCP("Server", json_response=True)
+# Stateless server with JSON responses (recommended)
+mcp = FastMCP("StatelessServer", stateless_http=True, json_response=True)
 
 # Other configuration options:
-# Stateless server (no session persistence)
+# Stateless server with SSE streaming responses
 # mcp = FastMCP("StatelessServer", stateless_http=True)
 
 # Stateful server with session persistence

examples/snippets/servers/streamable_config.py

@@ -5,11 +5,11 @@
 
 from mcp.server.fastmcp import FastMCP
 
-# With JSON responses instead of SSE (recommended for compatibility)
-mcp = FastMCP("Server", json_response=True)
+# Stateless server with JSON responses (recommended)
+mcp = FastMCP("StatelessServer", stateless_http=True, json_response=True)
 
 # Other configuration options:
-# Stateless server (no session persistence)
+# Stateless server with SSE streaming responses
 # mcp = FastMCP("StatelessServer", stateless_http=True)
 
 # Stateful server with session persistence