MCP Server - stdio mode only

[thibauult]

Summary by CodeRabbit

• New Features

  • Introduced an AI command group in the CLI for organizing AI-related commands.
  • Added an MCP server subcommand to run a server that exposes a tool to list rooms from your Hue home.

• Chores

  • Added MCP SDK dependency and updated indirect libraries for improved compatibility and stability.

[coderabbitai[bot]]

Walkthrough

Adds a new MCP server command exposing a “room_get” tool that lists Hue rooms, plus a simple “SayHi” tool. Wires the MCP server into the root CLI under an AI command group. Updates go.mod to include the MCP SDK and refreshes several indirect dependencies.

Changes

Cohort / File(s)	Summary
MCP server command cmd/mcp/server.go	Introduces an MCP server: defines HiParams, tools SayHi and ListRooms, and NewCmdMcpServer to run the server over stdio with OpenHUE context; registers tool room_get.
Root command wiring cmd/root.go	Adds AI command group OpenHueCmdGroupAI; registers mcp.NewCmdMcpServer(ctx) as a subcommand; reorganizes imports.
Dependencies go.mod	Adds github.com/modelcontextprotocol/go-sdk v0.2.0; adds github.com/yosida95/uritemplate/v3 indirectly; bumps several golang.org/x/* indirect dependencies.

Sequence Diagram(s)

sequenceDiagram
    autonumber
    actor User
    participant CLI as Cobra CLI
    participant MCP as MCP Server
    participant Tool as Tool: room_get
    participant OH as OpenHUE Context

    rect rgba(230,245,255,0.6)
    note over CLI: New AI group and mcp-server command
    User->>CLI: openhue mcp-server
    CLI->>MCP: Start over stdio (with OH in context)
    end

    rect rgba(235,255,235,0.6)
    note over MCP: Tool invocation flow
    User->>MCP: Call tool "room_get"
    MCP->>Tool: Invoke ListRooms(ctx)
    Tool->>OH: Get rooms
    alt Rooms found
        OH-->>Tool: [room list]
        Tool-->>MCP: Formatted room names
        MCP-->>User: Content: list of rooms
    else No rooms
        OH-->>Tool: []
        Tool-->>MCP: "No rooms found"
        MCP-->>User: Message: none
    else Context error
        Tool-->>MCP: error (no OpenHUE context)
        MCP-->>User: Error response
    end
    end

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~25 minutes

Pre-merge checks (1 passed, 2 warnings)

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Description Check	⚠️ Warning	The pull request currently has no description, so it fails to summarize or contextualize any of the changes made in the code and does not convey the intent or scope of the update.	Please add a pull request description that summarizes the key functional additions—such as the new MCP server command, its stdio transport mode, and the introduced SayHi and ListRooms tools—to clearly communicate the scope and purpose of the changes.
Docstring Coverage	⚠️ Warning	Docstring coverage is 60.00% which is insufficient. The required threshold is 80.00%.	You can run @coderabbitai generate docstrings to improve docstring coverage.

✅ Passed checks (1 passed)

Check name	Status	Explanation
Title Check	✅ Passed	The title references a core aspect of the changeset by indicating the addition of an MCP server operating in stdio mode, which is directly related to the main functionality introduced and remains concise and specific.

Poem

I twitched my ears at the humming wire,
A new MCP server sparks to fire.
“room_get,” I hop—list rooms in sight,
With OpenHUE to guide the light.
Dependencies trimmed, commands aligned—
Carrot-ready, code refined.
Hippity-hop, ship it on time!

[!TIP]

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