docs: clarify mcpServers version requirement

Author: codeaholicguy

web/content/docs/11-configuration-file.md

@@ -192,6 +192,8 @@ Both formats are accepted. The array format is automatically normalized to the o
 
 Defines MCP servers that agents can connect to. Each key is the server name. This page covers the `mcpServers` field structure. For setup flow, generated files, and conflict behavior during install, see [Agent Setup — MCP Servers](/docs/agent-setup#mcp-servers).
 
+> **Note:** The `mcpServers` field is supported in AI DevKit `0.23.0` or later.
+
 MCP settings can be stored either by initializing from a template or by editing `.ai-devkit.json` directly. `ai-devkit install` reads the final MCP settings from `.ai-devkit.json` and generates MCP config files only for environments that currently support MCP output.
 
 Every server definition requires a `transport` field set to `stdio`, `http`, or `sse`. The remaining fields depend on the transport type:

web/content/docs/9-agent-setup.md

@@ -133,6 +133,8 @@ ai-devkit init --docs-dir ./ai-docs
 
 Templates can include MCP server definitions. Add a `mcpServers` section to your template:
 
+> **Note:** `mcpServers` support requires AI DevKit `0.23.0` or later.
+
 ```yaml
 mcpServers:
   memory:
@@ -175,6 +177,8 @@ When using a template with a `skills` section, skills from the template are inst
 
 [MCP (Model Context Protocol)](https://modelcontextprotocol.io/) servers give AI agents extended capabilities such as persistent memory, database access, or external tool integrations. Define MCP servers in `.ai-devkit.json` and AI DevKit generates the environment-specific config files for you.
 
+> **Note:** `mcpServers` generation and install flow require AI DevKit `0.23.0` or later.
+
 MCP configuration is currently generated for **Claude Code** (`.mcp.json`) and **Codex** (`.codex/config.toml`).
 
 If your project uses only environments that do not currently support MCP generation, AI DevKit still saves the `mcpServers` definitions in `.ai-devkit.json`, but no environment-specific MCP config files are created.