diff --git a/src/api/routes.ts b/src/api/routes.ts
new file mode 100644
index 0000000..412811f
--- /dev/null
+++ b/src/api/routes.ts
@@ -0,0 +1,185 @@
+import { Router } from 'express';
+import { MCP_SCHEMA } from '../mcp/schema.js';
+import { middleware } from '../middleware/index.js';
+import { sseManager } from '../sse/index.js';
+import { v4 as uuidv4 } from 'uuid';
+import { TokenManager } from '../security/index.js';
+import { tools } from '../services/tools.js';
+import { Tool } from '../interfaces/index.js';
+
+const router = Router();
+
+// MCP schema endpoint - no auth required as it's just the schema
+router.get('/mcp', (_req, res) => {
+    res.json(MCP_SCHEMA);
+});
+
+// MCP execute endpoint - requires authentication
+router.post('/mcp/execute', middleware.authenticate, async (req, res) => {
+    try {
+        const { tool: toolName, parameters } = req.body;
+
+        // Find the requested tool
+        const tool = tools.find((t: Tool) => t.name === toolName);
+        if (!tool) {
+            return res.status(404).json({
+                success: false,
+                message: `Tool '${toolName}' not found`
+            });
+        }
+
+        // Execute the tool with the provided parameters
+        const result = await tool.execute(parameters);
+        res.json(result);
+    } catch (error) {
+        res.status(500).json({
+            success: false,
+            message: error instanceof Error ? error.message : 'Unknown error occurred'
+        });
+    }
+});
+
+// Health check endpoint
+router.get('/health', (_req, res) => {
+    res.json({
+        status: 'ok',
+        timestamp: new Date().toISOString(),
+        version: '0.1.0'
+    });
+});
+
+// List devices endpoint
+router.get('/list_devices', middleware.authenticate, async (req, res) => {
+    try {
+        const tool = tools.find((t: Tool) => t.name === 'list_devices');
+        if (!tool) {
+            return res.status(404).json({
+                success: false,
+                message: 'Tool not found'
+            });
+        }
+
+        const result = await tool.execute({ token: req.headers.authorization?.replace('Bearer ', '') });
+        res.json(result);
+    } catch (error) {
+        res.status(500).json({
+            success: false,
+            message: error instanceof Error ? error.message : 'Unknown error occurred'
+        });
+    }
+});
+
+// Device control endpoint
+router.post('/control', middleware.authenticate, async (req, res) => {
+    try {
+        const tool = tools.find((t: Tool) => t.name === 'control');
+        if (!tool) {
+            return res.status(404).json({
+                success: false,
+                message: 'Tool not found'
+            });
+        }
+
+        const result = await tool.execute({
+            ...req.body,
+            token: req.headers.authorization?.replace('Bearer ', '')
+        });
+        res.json(result);
+    } catch (error) {
+        res.status(500).json({
+            success: false,
+            message: error instanceof Error ? error.message : 'Unknown error occurred'
+        });
+    }
+});
+
+// SSE endpoints
+router.get('/subscribe_events', middleware.wsRateLimiter, (req, res) => {
+    try {
+        // Get token from query parameter
+        const token = req.query.token?.toString();
+
+        if (!token || !TokenManager.validateToken(token)) {
+            return res.status(401).json({
+                success: false,
+                message: 'Unauthorized - Invalid token'
+            });
+        }
+
+        // Set SSE headers
+        res.writeHead(200, {
+            'Content-Type': 'text/event-stream',
+            'Cache-Control': 'no-cache',
+            'Connection': 'keep-alive',
+            'Access-Control-Allow-Origin': '*'
+        });
+
+        // Send initial connection message
+        res.write(`data: ${JSON.stringify({
+            type: 'connection',
+            status: 'connected',
+            timestamp: new Date().toISOString()
+        })}\n\n`);
+
+        const clientId = uuidv4();
+        const client = {
+            id: clientId,
+            send: (data: string) => {
+                res.write(`data: ${data}\n\n`);
+            }
+        };
+
+        // Add client to SSE manager
+        const sseClient = sseManager.addClient(client, token);
+        if (!sseClient || !sseClient.authenticated) {
+            res.write(`data: ${JSON.stringify({
+                type: 'error',
+                message: sseClient ? 'Authentication failed' : 'Maximum client limit reached',
+                timestamp: new Date().toISOString()
+            })}\n\n`);
+            return res.end();
+        }
+
+        // Subscribe to events if specified
+        const events = req.query.events?.toString().split(',').filter(Boolean);
+        if (events?.length) {
+            events.forEach(event => sseManager.subscribeToEvent(clientId, event));
+        }
+
+        // Subscribe to entity if specified
+        const entityId = req.query.entity_id?.toString();
+        if (entityId) {
+            sseManager.subscribeToEntity(clientId, entityId);
+        }
+
+        // Subscribe to domain if specified
+        const domain = req.query.domain?.toString();
+        if (domain) {
+            sseManager.subscribeToDomain(clientId, domain);
+        }
+
+        // Handle client disconnect
+        req.on('close', () => {
+            sseManager.removeClient(clientId);
+        });
+
+    } catch (error) {
+        res.status(500).json({
+            success: false,
+            message: error instanceof Error ? error.message : 'Unknown error occurred'
+        });
+    }
+});
+
+// SSE stats endpoint
+router.get('/get_sse_stats', middleware.authenticate, (_req, res) => {
+    const stats = {
+        clients: sseManager.getClientCount(),
+        events: sseManager.getEventSubscriptions(),
+        entities: sseManager.getEntitySubscriptions(),
+        domains: sseManager.getDomainSubscriptions()
+    };
+    res.json(stats);
+});
+
+export default router; 
\ No newline at end of file
diff --git a/src/interfaces/hass.ts b/src/interfaces/hass.ts
new file mode 100644
index 0000000..382ec02
--- /dev/null
+++ b/src/interfaces/hass.ts
@@ -0,0 +1,83 @@
+/// <reference lib="dom" />
+
+// Home Assistant entity types
+export interface HassEntity {
+    entity_id: string;
+    state: string;
+    attributes: Record<string, any>;
+    last_changed?: string;
+    last_updated?: string;
+    context?: {
+        id: string;
+        parent_id?: string;
+        user_id?: string;
+    };
+}
+
+export interface HassState {
+    entity_id: string;
+    state: string;
+    attributes: {
+        friendly_name?: string;
+        description?: string;
+        [key: string]: any;
+    };
+}
+
+// Home Assistant instance types
+export interface HassInstance {
+    states: HassStates;
+    services: HassServices;
+    connection: HassConnection;
+    subscribeEvents: (callback: (event: HassEvent) => void, eventType?: string) => Promise<number>;
+    unsubscribeEvents: (subscription: number) => void;
+}
+
+export interface HassStates {
+    get: () => Promise<HassEntity[]>;
+    subscribe: (callback: (states: HassEntity[]) => void) => Promise<number>;
+    unsubscribe: (subscription: number) => void;
+}
+
+export interface HassServices {
+    get: () => Promise<Record<string, Record<string, HassService>>>;
+    call: (domain: string, service: string, serviceData?: Record<string, any>) => Promise<void>;
+}
+
+export interface HassConnection {
+    socket: WebSocket;
+    subscribeEvents: (callback: (event: HassEvent) => void, eventType?: string) => Promise<number>;
+    unsubscribeEvents: (subscription: number) => void;
+}
+
+export interface HassService {
+    name: string;
+    description: string;
+    target?: {
+        entity?: {
+            domain: string[];
+        };
+    };
+    fields: Record<string, {
+        name: string;
+        description: string;
+        required?: boolean;
+        example?: any;
+        selector?: any;
+    }>;
+}
+
+export interface HassEvent {
+    event_type: string;
+    data: Record<string, any>;
+    origin: string;
+    time_fired: string;
+    context: {
+        id: string;
+        parent_id?: string;
+        user_id?: string;
+    };
+}
+
+// Re-export entity types from index.ts
+export { HassEntity, HassState } from './index.js'; 
\ No newline at end of file
diff --git a/src/services/tools.ts b/src/services/tools.ts
new file mode 100644
index 0000000..953fe93
--- /dev/null
+++ b/src/services/tools.ts
@@ -0,0 +1,101 @@
+import { z } from 'zod';
+import { Tool } from '../interfaces/index.js';
+import { get_hass } from '../hass/index.js';
+import { DomainSchema } from '../schemas.js';
+import { HassEntity, HassState } from '../interfaces/index.js';
+
+// Define tools array
+export const tools: Tool[] = [
+    {
+        name: 'list_devices',
+        description: 'List all devices connected to Home Assistant',
+        parameters: z.object({
+            domain: DomainSchema.optional(),
+            area: z.string().optional(),
+            floor: z.string().optional()
+        }),
+        execute: async (params) => {
+            const hass = await get_hass();
+            const states = await hass.states.get();
+
+            // Filter by domain if specified
+            let filteredStates = states;
+            if (params.domain) {
+                filteredStates = states.filter((state: HassEntity) => state.entity_id.startsWith(`${params.domain}.`));
+            }
+
+            // Filter by area if specified
+            if (params.area) {
+                filteredStates = filteredStates.filter((state: HassEntity) =>
+                    state.attributes.area_id === params.area ||
+                    state.attributes.area === params.area
+                );
+            }
+
+            // Filter by floor if specified
+            if (params.floor) {
+                filteredStates = filteredStates.filter((state: HassEntity) =>
+                    state.attributes.floor === params.floor
+                );
+            }
+
+            return {
+                success: true,
+                devices: filteredStates.map((state: HassEntity) => ({
+                    entity_id: state.entity_id,
+                    state: state.state,
+                    attributes: state.attributes
+                }))
+            };
+        }
+    },
+    {
+        name: 'control',
+        description: 'Control a Home Assistant device',
+        parameters: z.object({
+            command: z.string(),
+            entity_id: z.string(),
+            state: z.string().optional(),
+            brightness: z.number().min(0).max(255).optional(),
+            color_temp: z.number().optional(),
+            rgb_color: z.tuple([z.number(), z.number(), z.number()]).optional(),
+            position: z.number().min(0).max(100).optional(),
+            tilt_position: z.number().min(0).max(100).optional(),
+            temperature: z.number().optional(),
+            target_temp_high: z.number().optional(),
+            target_temp_low: z.number().optional(),
+            hvac_mode: z.string().optional(),
+            fan_mode: z.string().optional(),
+            humidity: z.number().min(0).max(100).optional()
+        }),
+        execute: async (params) => {
+            const hass = await get_hass();
+            const domain = params.entity_id.split('.')[0];
+
+            const serviceData: Record<string, any> = {
+                entity_id: params.entity_id
+            };
+
+            // Add optional parameters if they exist
+            if (params.state) serviceData.state = params.state;
+            if (params.brightness) serviceData.brightness = params.brightness;
+            if (params.color_temp) serviceData.color_temp = params.color_temp;
+            if (params.rgb_color) serviceData.rgb_color = params.rgb_color;
+            if (params.position) serviceData.position = params.position;
+            if (params.tilt_position) serviceData.tilt_position = params.tilt_position;
+            if (params.temperature) serviceData.temperature = params.temperature;
+            if (params.target_temp_high) serviceData.target_temp_high = params.target_temp_high;
+            if (params.target_temp_low) serviceData.target_temp_low = params.target_temp_low;
+            if (params.hvac_mode) serviceData.hvac_mode = params.hvac_mode;
+            if (params.fan_mode) serviceData.fan_mode = params.fan_mode;
+            if (params.humidity) serviceData.humidity = params.humidity;
+
+            await hass.services.call(domain, params.command, serviceData);
+
+            return {
+                success: true,
+                message: `Command '${params.command}' executed on ${params.entity_id}`
+            };
+        }
+    }
+]; 
\ No newline at end of file