feat: implement sequential thinking MCP server with tool handling and logging

middleware/auth.ts

@@ -1,17 +1,29 @@
-export default defineNuxtRouteMiddleware((to) => {
+export default defineNuxtRouteMiddleware(async (to) => {
   // Skip auth for public pages
   if (to.meta.auth === false) {
     return;
   }
 
-  // Check if user is authenticated
+  // Use the same auth system as the rest of the app
-  const authState = useState('auth.state', () => ({
+  const { isAuthenticated, checkAuth, user } = useAuth();
-    authenticated: false,
+  
-    user: null,
+  console.log('🛡️ Auth middleware running for:', to.path);
-    groups: [],
+  
-  }));
+  // Ensure auth is checked if user isn't loaded
+  if (!user.value) {
+    console.log('🔄 User not loaded, checking auth...');
+    await checkAuth();
+  }
 
-  if (!authState.value.authenticated) {
+  console.log('✅ Auth middleware check:', { 
+    isAuthenticated: isAuthenticated.value, 
+    user: user.value?.email 
+  });
+
+  if (!isAuthenticated.value) {
+    console.log('❌ User not authenticated, redirecting to login');
     return navigateTo('/login');
   }
+  
+  console.log('✅ Auth middleware passed, allowing access to:', to.path);
 });

sequential-thinking/.gitignore

@@ -0,0 +1,4 @@
+node_modules/
+build/
+*.log
+.env*

sequential-thinking/README.md

@@ -0,0 +1,70 @@
+# sequential-thinking MCP Server
+
+A Model Context Protocol server
+
+This is a TypeScript-based MCP server that implements a simple notes system. It demonstrates core MCP concepts by providing:
+
+- Resources representing text notes with URIs and metadata
+- Tools for creating new notes
+- Prompts for generating summaries of notes
+
+## Features
+
+### Resources
+- List and access notes via `note://` URIs
+- Each note has a title, content and metadata
+- Plain text mime type for simple content access
+
+### Tools
+- `create_note` - Create new text notes
+  - Takes title and content as required parameters
+  - Stores note in server state
+
+### Prompts
+- `summarize_notes` - Generate a summary of all stored notes
+  - Includes all note contents as embedded resources
+  - Returns structured prompt for LLM summarization
+
+## Development
+
+Install dependencies:
+```bash
+npm install
+```
+
+Build the server:
+```bash
+npm run build
+```
+
+For development with auto-rebuild:
+```bash
+npm run watch
+```
+
+## Installation
+
+To use with Claude Desktop, add the server config:
+
+On MacOS: `~/Library/Application Support/Claude/claude_desktop_config.json`
+On Windows: `%APPDATA%/Claude/claude_desktop_config.json`
+
+```json
+{
+  "mcpServers": {
+    "sequential-thinking": {
+      "command": "/path/to/sequential-thinking/build/index.js"
+    }
+  }
+}
+```
+
+### Debugging
+
+Since MCP servers communicate over stdio, debugging can be challenging. We recommend using the [MCP Inspector](https://github.com/modelcontextprotocol/inspector), which is available as a package script:
+
+```bash
+npm run inspector
+```
+
+The Inspector will provide a URL to access debugging tools in your browser.

sequential-thinking/package.json

@@ -0,0 +1,26 @@
+{
+  "name": "sequential-thinking",
+  "version": "0.1.0",
+  "description": "A Model Context Protocol server",
+  "private": true,
+  "type": "module",
+  "bin": {
+    "sequential-thinking": "./build/index.js"
+  },
+  "files": [
+    "build"
+  ],
+  "scripts": {
+    "build": "tsc && node -e \"require('fs').chmodSync('build/index.js', '755')\"",
+    "prepare": "npm run build",
+    "watch": "tsc --watch",
+    "inspector": "npx @modelcontextprotocol/inspector build/index.js"
+  },
+  "dependencies": {
+    "@modelcontextprotocol/sdk": "0.6.0"
+  },
+  "devDependencies": {
+    "@types/node": "^20.11.24",
+    "typescript": "^5.3.3"
+  }
+}

sequential-thinking/src/index.ts

@@ -0,0 +1,243 @@
+#!/usr/bin/env node
+import { Server } from '@modelcontextprotocol/sdk/server/index.js';
+import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
+import {
+  CallToolRequestSchema,
+  ErrorCode,
+  ListToolsRequestSchema,
+  McpError,
+} from '@modelcontextprotocol/sdk/types.js';
+
+interface ThoughtStep {
+  thoughtNumber: number;
+  thought: string;
+  isRevision?: boolean;
+  revisesThought?: number;
+  branchFromThought?: number;
+  branchId?: string;
+  timestamp: string;
+}
+
+interface SequentialThinkingArgs {
+  thought: string;
+  nextThoughtNeeded: boolean;
+  thoughtNumber: number;
+  totalThoughts: number;
+  isRevision?: boolean;
+  revisesThought?: number;
+  branchFromThought?: number;
+  branchId?: string;
+  needsMoreThoughts?: boolean;
+}
+
+const isValidSequentialThinkingArgs = (
+  args: any
+): args is SequentialThinkingArgs =>
+  typeof args === 'object' &&
+  args !== null &&
+  typeof args.thought === 'string' &&
+  typeof args.nextThoughtNeeded === 'boolean' &&
+  typeof args.thoughtNumber === 'number' &&
+  typeof args.totalThoughts === 'number' &&
+  (args.isRevision === undefined || typeof args.isRevision === 'boolean') &&
+  (args.revisesThought === undefined || typeof args.revisesThought === 'number') &&
+  (args.branchFromThought === undefined || typeof args.branchFromThought === 'number') &&
+  (args.branchId === undefined || typeof args.branchId === 'string') &&
+  (args.needsMoreThoughts === undefined || typeof args.needsMoreThoughts === 'boolean');
+
+class SequentialThinkingServer {
+  private server: Server;
+  private thoughtHistory: ThoughtStep[] = [];
+  private disableLogging: boolean;
+
+  constructor() {
+    this.disableLogging = process.env.DISABLE_THOUGHT_LOGGING === 'true';
+    
+    this.server = new Server(
+      {
+        name: 'sequential-thinking-server',
+        version: '0.1.0',
+      },
+      {
+        capabilities: {
+          tools: {},
+        },
+      }
+    );
+
+    this.setupToolHandlers();
+    
+    // Error handling
+    this.server.onerror = (error) => console.error('[MCP Error]', error);
+    process.on('SIGINT', async () => {
+      await this.server.close();
+      process.exit(0);
+    });
+  }
+
+  private setupToolHandlers() {
+    this.server.setRequestHandler(ListToolsRequestSchema, async () => ({
+      tools: [
+        {
+          name: 'sequential_thinking',
+          description: 'Facilitates a detailed, step-by-step thinking process for problem-solving and analysis. Supports dynamic revision, branching, and iterative refinement of thoughts.',
+          inputSchema: {
+            type: 'object',
+            properties: {
+              thought: {
+                type: 'string',
+                description: 'The current thinking step or analysis',
+              },
+              nextThoughtNeeded: {
+                type: 'boolean',
+                description: 'Whether another thought step is needed to continue the analysis',
+              },
+              thoughtNumber: {
+                type: 'integer',
+                description: 'Current thought number in the sequence',
+                minimum: 1,
+              },
+              totalThoughts: {
+                type: 'integer',
+                description: 'Estimated total number of thoughts needed (can be adjusted dynamically)',
+                minimum: 1,
+              },
+              isRevision: {
+                type: 'boolean',
+                description: 'Whether this thought revises or refines previous thinking',
+              },
+              revisesThought: {
+                type: 'integer',
+                description: 'Which thought number is being reconsidered (if isRevision is true)',
+                minimum: 1,
+              },
+              branchFromThought: {
+                type: 'integer',
+                description: 'Thought number from which this branches into alternative reasoning',
+                minimum: 1,
+              },
+              branchId: {
+                type: 'string',
+                description: 'Identifier for the branch (e.g., "alternative_approach", "edge_case")',
+              },
+              needsMoreThoughts: {
+                type: 'boolean',
+                description: 'Whether the total number of thoughts should be increased',
+              },
+            },
+            required: ['thought', 'nextThoughtNeeded', 'thoughtNumber', 'totalThoughts'],
+          },
+        },
+      ],
+    }));
+
+    this.server.setRequestHandler(CallToolRequestSchema, async (request) => {
+      if (request.params.name !== 'sequential_thinking') {
+        throw new McpError(
+          ErrorCode.MethodNotFound,
+          `Unknown tool: ${request.params.name}`
+        );
+      }
+
+      if (!isValidSequentialThinkingArgs(request.params.arguments)) {
+        throw new McpError(
+          ErrorCode.InvalidParams,
+          'Invalid sequential thinking arguments'
+        );
+      }
+
+      const args = request.params.arguments;
+      
+      try {
+        // Create thought step
+        const thoughtStep: ThoughtStep = {
+          thoughtNumber: args.thoughtNumber,
+          thought: args.thought,
+          isRevision: args.isRevision,
+          revisesThought: args.revisesThought,
+          branchFromThought: args.branchFromThought,
+          branchId: args.branchId,
+          timestamp: new Date().toISOString(),
+        };
+
+        // Add to history
+        this.thoughtHistory.push(thoughtStep);
+
+        // Log thought if logging is enabled
+        if (!this.disableLogging) {
+          console.error(`[Thought ${args.thoughtNumber}/${args.totalThoughts}]${args.isRevision ? ' (Revision)' : ''}${args.branchId ? ` [Branch: ${args.branchId}]` : ''}: ${args.thought}`);
+        }
+
+        // Prepare response
+        let responseText = `**Thought ${args.thoughtNumber}/${args.totalThoughts}**`;
+        
+        if (args.isRevision && args.revisesThought) {
+          responseText += ` *(Revising thought ${args.revisesThought})*`;
+        }
+        
+        if (args.branchId) {
+          responseText += ` *[Branch: ${args.branchId}]*`;
+          if (args.branchFromThought) {
+            responseText += ` *(from thought ${args.branchFromThought})*`;
+          }
+        }
+        
+        responseText += `\n\n${args.thought}`;
+        
+        if (args.needsMoreThoughts) {
+          responseText += `\n\n*Note: Analysis indicates more thoughts may be needed beyond the initial estimate of ${args.totalThoughts}.*`;
+        }
+        
+        if (args.nextThoughtNeeded) {
+          responseText += `\n\n*Continuing to next thought...*`;
+        } else {
+          responseText += `\n\n*Analysis complete.*`;
+          
+          // Provide summary if this is the final thought
+          if (this.thoughtHistory.length > 1) {
+            responseText += `\n\n**Summary**: Completed sequential thinking process with ${this.thoughtHistory.length} thought steps.`;
+            
+            const revisions = this.thoughtHistory.filter(t => t.isRevision).length;
+            const branches = new Set(this.thoughtHistory.filter(t => t.branchId).map(t => t.branchId)).size;
+            
+            if (revisions > 0) {
+              responseText += ` Included ${revisions} revision${revisions > 1 ? 's' : ''}.`;
+            }
+            
+            if (branches > 0) {
+              responseText += ` Explored ${branches} alternative branch${branches > 1 ? 'es' : ''}.`;
+            }
+          }
+        }
+
+        return {
+          content: [
+            {
+              type: 'text',
+              text: responseText,
+            },
+          ],
+        };
+      } catch (error) {
+        return {
+          content: [
+            {
+              type: 'text',
+              text: `Error in sequential thinking process: ${error instanceof Error ? error.message : 'Unknown error'}`,
+            },
+          ],
+          isError: true,
+        };
+      }
+    });
+  }
+
+  async run() {
+    const transport = new StdioServerTransport();
+    await this.server.connect(transport);
+    console.error('Sequential Thinking MCP server running on stdio');
+  }
+}
+
+const server = new SequentialThinkingServer();
+server.run().catch(console.error);

sequential-thinking/tsconfig.json

@@ -0,0 +1,15 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "Node16",
+    "moduleResolution": "Node16",
+    "outDir": "./build",
+    "rootDir": "./src",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules"]
+}