LIFX MCP Server

Instructions

Implementation Reference

• src/index.ts:465-477 (handler)

  The handler executes the validate_color tool by sending the color string to the LIFX /color API endpoint for validation and parsing, then returns the parsed result.

  case "validate_color": {
    const { token, color } = args as { token: string; color: string };
    const result = await makeLIFXRequest(`/color?color=${encodeURIComponent(color)}`, { token });
  
    return {
      content: [
        {
          type: "text",
          text: `Color validation result:\n${JSON.stringify(result, null, 2)}`,
        },
      ],
    };
  }

• src/index.ts:248-259 (registration)

  Registration of the validate_color tool, including its name, description, and input schema definition.

  {
    name: "validate_color",
    description: "Validate a color string",
    inputSchema: {
      type: "object",
      properties: {
        token: { type: "string", description: "LIFX API token" },
        color: { type: "string", description: "Color string to validate" },
      },
      required: ["token", "color"],
    },
  },

• src/index.ts:251-258 (schema)

  Input schema defining the parameters for the validate_color tool: LIFX token and color string.

  inputSchema: {
    type: "object",
    properties: {
      token: { type: "string", description: "LIFX API token" },
      color: { type: "string", description: "Color string to validate" },
    },
    required: ["token", "color"],
  },

• src/index.ts:72-114 (helper)

  Shared helper function used by all tools, including validate_color, to make authenticated HTTP requests to the LIFX API.

  async function makeLIFXRequest(
    endpoint: string,
    options: {
      method?: string;
      body?: any;
      token: string;
    }
  ): Promise<any> {
    const { method = "GET", body, token } = options;
    
    const url = `${LIFX_API_BASE}${endpoint}`;
    const headers: Record<string, string> = {
      "Authorization": `Bearer ${token}`,
      "User-Agent": USER_AGENT,
    };
  
    if (body && (method === "POST" || method === "PUT")) {
      headers["Content-Type"] = "application/json";
    }
  
    try {
      const response = await fetch(url, {
        method,
        headers,
        body: body ? JSON.stringify(body) : undefined,
      });
  
      if (!response.ok) {
        const errorText = await response.text();
        throw new Error(`LIFX API error: ${response.status} ${response.statusText} - ${errorText}`);
      }
  
      // Some endpoints return empty responses
      const contentType = response.headers.get("content-type");
      if (contentType?.includes("application/json")) {
        return await response.json();
      }
      
      return await response.text();
    } catch (error) {
      throw new Error(`Failed to make LIFX API request: ${error instanceof Error ? error.message : String(error)}`);
    }
  }