feat: add configurable MCP tool loading to reduce LLM context usage (#1181)

Co-authored-by: Ralph Khreish <35776126+Crunchyman-ralph@users.noreply.github.com>

apps/docs/getting-started/quick-start/configuration-quick.mdx

@@ -37,6 +37,25 @@ For MCP/Cursor usage: Configure keys in the env section of your .cursor/mcp.json
 }
 ```
 
+<Tip>
+**Optimize Context Usage**: You can control which Task Master MCP tools are loaded using the `TASK_MASTER_TOOLS` environment variable. This helps reduce LLM context usage by only loading the tools you need.
+
+Options:
+- `all` (default) - All 36 tools
+- `standard` - 15 commonly used tools
+- `core` or `lean` - 7 essential tools
+
+Example:
+```json
+"env": {
+  "TASK_MASTER_TOOLS": "standard",
+  "ANTHROPIC_API_KEY": "your_key_here"
+}
+```
+
+See the [MCP Tools documentation](/capabilities/mcp#configurable-tool-loading) for details.
+</Tip>
+
 ### CLI Usage: `.env` File
 
 Create a `.env` file in your project root and include the keys for the providers you plan to use: