┌──────────────────────────────────────────────────────────────┐
│                      MCP Server (Stdio)                      │
├──────────────────────────────────────────────────────────────┤
│  Resources                   │  Tools                        │
│  • library-docs/{lib}/{ver}  │  • search_library            │
│  • api-signature/{lib}/{fn}  │  • validate_api              │
│  • library-versions/{lib}    │  • compare_versions          │
├──────────────────────────────────────────────────────────────┤
│              Indexing Pipeline (Orchestrator)                │
│     NPM → Parse AST → Chunk → Embed → Qdrant Store         │
├──────────────────────────────────────────────────────────────┤
│  Services Layer                                              │
│  • NPM Crawler     • AST Parser    • Chunker                │
│  • Embedder        • Qdrant        • Orchestrator           │
└──────────────────────────────────────────────────────────────┘

# Qdrant Configuration
QDRANT_URL=https://your-cluster.qdrant.tech
QDRANT_API_KEY=your_api_key_here

# MCP Server Configuration
MCP_SERVER_NAME=dag-mcp-server
MCP_SERVER_VERSION=0.1.0

import { IndexingOrchestrator } from '@vamfi/dag-indexer';
import {
  NPMCrawlerService,
  ASTParserService,
  ChunkerService,
  EmbedderService,
  QdrantService
} from '@vamfi/dag-indexer';

// Initialize services
const crawler = new NPMCrawlerService();
const parser = new ASTParserService();
const chunker = new ChunkerService();
const embedder = new EmbedderService({
  qdrantUrl: process.env.QDRANT_URL,
  apiKey: process.env.QDRANT_API_KEY
});
const qdrant = new QdrantService({
  url: process.env.QDRANT_URL,
  apiKey: process.env.QDRANT_API_KEY
});

// Create orchestrator
const orchestrator = new IndexingOrchestrator(
  crawler,
  parser,
  chunker,
  embedder,
  qdrant
);

// Index a package
const result = await orchestrator.indexPackage('express', '4.18.2');

console.log(`Indexed ${result.chunksIndexed} chunks in ${result.duration}ms`);

# Start the server
npm start --workspace=@vamfi/dag-mcp-server

# Or use the CLI directly
./packages/mcp-server/dist/index.js

dag://library-docs/express/4.18.2
dag://api-signature/express/Router
dag://library-versions/express

{
  "tool": "search_library",
  "arguments": {
    "query": "how to create middleware",
    "library": "express",
    "version": "4.18.2",
    "limit": 5
  }
}

{
  "tool": "validate_api",
  "arguments": {
    "library": "express",
    "apiCall": "app.use(express.json())",
    "version": "4.18.2"
  }
}

{
  "tool": "compare_versions",
  "arguments": {
    "library": "express",
    "version1": "4.17.0",
    "version2": "4.18.2"
  }
}

{
  "mcpServers": {
    "dag": {
      "command": "node",
      "args": ["/path/to/DAG/packages/mcp-server/dist/index.js"],
      "env": {
        "QDRANT_URL": "https://your-cluster.qdrant.tech",
        "QDRANT_API_KEY": "your_api_key"
      }
    }
  }
}

{
  "experimental": {
    "modelContextProtocolServers": [
      {
        "transport": {
          "type": "stdio",
          "command": "node",
          "args": ["/path/to/DAG/packages/mcp-server/dist/index.js"]
        },
        "env": {
          "QDRANT_URL": "https://your-cluster.qdrant.tech",
          "QDRANT_API_KEY": "your_api_key"
        }
      }
    ]
  }
}