MCP Task Manager Server

A local Model Context Protocol (MCP) server providing backend tools for client-driven project and task management using a SQLite database.

Overview

This server acts as a persistent backend for local MCP clients (like AI agents or scripts) that need to manage structured task data within distinct projects. It handles data storage and provides a standardized set of tools for interaction, while the strategic workflow logic resides within the client.

Key Features:

• Project-Based: Tasks are organized within distinct projects.
• SQLite Persistence: Uses a local SQLite file (./data/taskmanager.db by default) for simple, self-contained data storage.
• Client-Driven: Provides tools for clients; does not dictate workflow.
• MCP Compliant: Adheres to the Model Context Protocol for tool definition and communication.
• Task Management: Supports creating projects, adding tasks, listing/showing tasks, updating status, expanding tasks into subtasks, and identifying the next actionable task.
• Import/Export: Allows exporting project data to JSON and importing from JSON to create new projects.

Implemented MCP Tools

The following tools are available for MCP clients:

• createProject:
  • Description: Creates a new, empty project.
  • Params: projectName (string, optional, max 255)
  • Returns: { project_id: string }
• addTask:
  • Description: Adds a new task to a project.
  • Params: project_id (string, required, UUID), description (string, required, 1-1024), dependencies (string[], optional, max 50), priority (enum 'high'|'medium'|'low', optional, default 'medium'), status (enum 'todo'|'in-progress'|'review'|'done', optional, default 'todo')
  • Returns: Full TaskData object of the created task.
• listTasks:
  • Description: Lists tasks for a project, with optional filtering and subtask inclusion.
  • Params: project_id (string, required, UUID), status (enum 'todo'|'in-progress'|'review'|'done', optional), include_subtasks (boolean, optional, default false)
  • Returns: Array of TaskData or StructuredTaskData objects.
• showTask:
  • Description: Retrieves full details for a specific task, including dependencies and direct subtasks.
  • Params: project_id (string, required, UUID), task_id (string, required)
  • Returns: FullTaskData object.
• setTaskStatus:
  • Description: Updates the status of one or more tasks.
  • Params: project_id (string, required, UUID), task_ids (string[], required, 1-100), status (enum 'todo'|'in-progress'|'review'|'done', required)
  • Returns: { success: true, updated_count: number }
• expandTask:
  • Description: Breaks a parent task into subtasks, optionally replacing existing ones.
  • Params: project_id (string, required, UUID), task_id (string, required), subtask_descriptions (string[], required, 1-20, each 1-512), force (boolean, optional, default false)
  • Returns: Updated parent FullTaskData object including new subtasks.
• getNextTask:
  • Description: Identifies the next actionable task based on status ('todo'), dependencies ('done'), priority, and creation date.
  • Params: project_id (string, required, UUID)
  • Returns: FullTaskData object of the next task, or null if none are ready.
• exportProject:
  • Description: Exports complete project data as a JSON string.
  • Params: project_id (string, required, UUID), format (enum 'json', optional, default 'json')
  • Returns: JSON string representing the project.
• importProject:
  • Description: Creates a new project from an exported JSON string.
  • Params: project_data (string, required, JSON), new_project_name (string, optional, max 255)
  • Returns: { project_id: string } of the newly created project.
• updateTask:
  • Description: Updates specific details (description, priority, dependencies) of an existing task.
  • Params: project_id (string, required, UUID), task_id (string, required, UUID), description (string, optional, 1-1024), priority (enum 'high'|'medium'|'low', optional), dependencies (string[], optional, max 50, replaces existing)
  • Returns: Updated FullTaskData object.
• deleteTask:
  • Description: Deletes one or more tasks (and their subtasks/dependency links via cascade).
  • Params: project_id (string, required, UUID), task_ids (string[], required, 1-100)
  • Returns: { success: true, deleted_count: number }
• deleteProject:
  • Description: Permanently deletes a project and ALL associated data. Use with caution!
  • Params: project_id (string, required, UUID)
  • Returns: { success: true }

(Note: Refer to the corresponding src/tools/*Params.ts files for detailed Zod schemas and parameter descriptions.)

Getting Started

1. Prerequisites: Node.js (LTS recommended), npm.

2. Install Dependencies:

   npm install
   

3. Run in Development Mode: (Uses ts-node and nodemon for auto-reloading)

   npm run dev
   

   The server will connect via stdio. Logs (JSON format) will be printed to stderr. The SQLite database will be created/updated in ./data/taskmanager.db.

4. Build for Production:

   npm run build
   

5. Run Production Build:

   npm start
   

Configuration

• Database Path: The location of the SQLite database file can be overridden by setting the DATABASE_PATH environment variable. The default is ./data/taskmanager.db.
• Log Level: The logging level can be set using the LOG_LEVEL environment variable (e.g., debug, info, warn, error). The default is info.

Project Structure

• /src: Source code.
  • /config: Configuration management.
  • /db: Database manager and schema (schema.sql).
  • /repositories: Data access layer (SQLite interaction).
  • /services: Core business logic.
  • /tools: MCP tool definitions (*Params.ts) and implementation (*Tool.ts).
  • /types: Shared TypeScript interfaces (currently minimal, mostly in repos/services).
  • /utils: Logging, custom errors, etc.
  • createServer.ts: Server instance creation.
  • server.ts: Main application entry point.
• /dist: Compiled JavaScript output.
• /docs: Project documentation (PRD, Feature Specs, RFC).
• /data: Default location for the SQLite database file (created automatically).
• tasks.md: Manual task tracking file for development.
• Config files (package.json, tsconfig.json, .eslintrc.json, etc.)

Linting and Formatting

• Lint: npm run lint
• Format: npm run format

(Code is automatically linted/formatted on commit via Husky/lint-staged).