LogicMap MCP Server

An MCP server implementation that provides semantic knowledge graph tools for understanding project structure, business logic, and code relationships.

Features

• Semantic Knowledge Graph: Record business logic and conceptual relationships, not just code structure

• Multi-Project Management: Manage multiple project knowledge graphs simultaneously

• Rich Node Types: Support for concepts, flows, modules, components, data entities, and external dependencies

• Relationship Modeling: Express various logical relationships (calls, depends, implements, flows_to, uses_data, triggers, extends)

• Powerful Query Tools: Search nodes, query relationships, and explore graph structure

• Language Agnostic: No dependency on specific language parsers, works with any codebase

• Progressive Construction: Build knowledge graphs incrementally, starting with core flows

Related MCP server: RAG MCP Server

Tools

Project Management

• createProject: Create a new project with metadata

• updateProject: Update project information

• deleteProject: Remove a project

• listProjects: List all available projects

Node Management

• addNode: Add a semantic node to the knowledge graph

  • Types: concept, flow, module, component, data, external

  • Supports tags, file associations, and custom metadata

• updateNode: Update existing node information

• removeNode: Remove a node and optionally cascade delete related edges

Relationship Management

• linkNodes: Create relationships between nodes

  • Types: calls, depends, implements, flows_to, uses_data, triggers, extends

  • Supports relationship strength and descriptions

• unlinkNodes: Remove relationships between nodes

Query Tools

• queryNode: Get detailed node information with relationships

  • Supports neighbor traversal with configurable depth

• searchNodes: Search nodes by criteria

  • Filter by type, tags, files, or text content

  • Configurable result limits

Usage

LogicMap is designed for:

• Understanding complex codebases and business logic

• Documenting system architecture and data flows

• Impact analysis before making changes

• Onboarding new team members

• AI-assisted code comprehension

• Cross-team knowledge sharing

Configuration

Usage with Claude Desktop

Add this to your claude_desktop_config.json:

{
  "mcpServers": {
    "logicmap": {
      "command": "node",
      "args": [
        "/absolute/path/to/logicmap-mcp-server/dist/index.js"
      ]
    }
  }
}

Usage with Kiro (compatible with other vscode based IDE)

Add the configuration to your MCP configuration file. Open the Command Palette (Ctrl + Shift + P or Cmd + Shift + P) and run MCP: Open User Configuration. This will open your user mcp.json file where you can add the server configuration.

User Configuration (Recommended):

{
  "mcpServers": {
    "logicmap": {
      "command": "node",
      "args": [
        "/absolute/path/to/logicmap-mcp-server/dist/index.js"
      ]
    }
  }
}

Workspace Configuration:

Alternatively, create .kiro/settings/mcp.json in your workspace:

{
  "mcpServers": {
    "logicmap": {
      "command": "node",
      "args": [
        "/absolute/path/to/logicmap-mcp-server/dist/index.js"
      ]
    }
  }
}

For more details about MCP configuration, see the Kiro MCP documentation.

Configuration Example

See mcp-config-example.json for a complete configuration example.

Installation

From Source

# Clone the repository
git clone https://github.com/yourusername/logicmap-mcp-server.git
cd logicmap-mcp-server

# Install dependencies
npm install

# Build the project
npm run build

Verify Installation

After building, test the server:

# Run tests
npm test

# Check build output
ls dist/

Development

# Development mode (watch for changes)
npm run dev

# Run tests
npm test

# Run tests with coverage
npm run test:coverage

# Lint code
npm run lint

# Format code
npm run format

# Clean build output
npm run clean

Example Usage

Creating a Knowledge Graph

// 1. Create a project
await createProject({
  name: "My Web App",
  description: "E-commerce platform",
  workspacePath: "/path/to/project"
});

// 2. Add semantic nodes
await addNode({
  id: "user-auth-flow",
  type: "flow",
  name: "User Authentication Flow",
  description: "Handles user login, token validation, and permission checks",
  files: ["src/auth/controller.ts", "src/auth/service.ts"],
  tags: ["core", "security"]
});

await addNode({
  id: "payment-service",
  type: "module",
  name: "Payment Service",
  description: "Integrates with Stripe and PayPal for payment processing",
  files: ["src/payment/processor.ts"],
  tags: ["core", "third-party"]
});

// 3. Create relationships
await linkNodes({
  from: "user-auth-flow",
  to: "payment-service",
  type: "depends",
  description: "Payment requires authenticated user session"
});

// 4. Query the graph
const result = await queryNode({
  id: "user-auth-flow",
  includeNeighbors: true,
  depth: 2
});

// 5. Search nodes
const searchResults = await searchNodes({
  tags: ["core"],
  types: ["flow", "module"],
  limit: 10
});

Project Structure

logicmap-mcp-server/
├── src/
│   ├── index.ts              # Entry point
│   ├── types/                # TypeScript type definitions
│   ├── schemas/              # JSON Schema validation
│   ├── services/             # Core business logic
│   │   ├── NodeService.ts    # Node CRUD operations
│   │   ├── EdgeService.ts    # Relationship management
│   │   └── QueryService.ts   # Graph queries
│   ├── storage/              # Data persistence
│   │   └── StorageManager.ts # File-based storage with locking
│   └── mcp/                  # MCP protocol implementation
│       └── MCPServerHandler.ts
├── tests/                    # Test files
├── dist/                     # Build output
└── package.json

Data Storage

LogicMap stores project data in ~/.logicmap/projects/ as JSON files:

~/.logicmap/
└── projects/
    └── {project-id}/
        └── graph.json        # Complete knowledge graph

Each graph file contains:

• Project metadata

• Node dictionary (for O(1) lookups)

• Edge list

• Timestamps

Tech Stack

• Runtime: Node.js >= 18.0.0

• Language: TypeScript 5.3+

• Protocol: Model Context Protocol (MCP)

• Validation: Ajv (JSON Schema)

• Storage: JSON files with proper-lockfile

• Testing: Vitest + fast-check

Building

# Build TypeScript to JavaScript
npm run build

# Output will be in dist/ directory

Contributing

Contributions are welcome! Please see CONTRIBUTING.md for guidelines.

License

This MCP server is licensed under the MIT License. This means you are free to use, modify, and distribute the software, subject to the terms and conditions of the MIT License. For more details, please see the LICENSE file in the project repository.

Links

• Model Context Protocol Documentation

• MCP TypeScript SDK

• Issue Tracker