# 06 MCP Tool

Script: `example/06_mcp_tool.py`.

This key-free example starts the in-repo stdio MCP echo server, discovers its tool schema, wraps the tool as a `FlowToolCall`, and calls it directly.

```bash
python example/06_mcp_tool.py
```

| API | Purpose |
| --- | --- |
| `mcp_tools_from_server([...])` | Discovers stdio MCP tools. |
| `MCPToolCall` | Exposes one MCP tool as an OpenRath tool. |
| `tool(Session.from_user_message(...), args)` | Calls the wrapped tool. |

Use this page when wiring a real MCP server into `flow.Agent(tools=...)`.

[← Runnable Examples](index.md)