Synergy/DE MCP Server

A read-only Model Context Protocol (MCP) server that exposes Synergy/DE documentation as tools and resources, making it easy to search, retrieve, and browse documentation topics from Cursor and other MCP clients.

Features

• Full-text search across Synergy/DE documentation with relevance scoring

• Topic retrieval with chunked content optimized for LLM consumption

• Related topics navigation (previous, next, parent, and related links)

• Section browsing to discover topics by category

• Version support for different Synergy/DE documentation versions

• Intelligent caching to minimize network requests and improve performance

• Online and local documentation support (hybrid mode available)

• MCP Resources for direct topic and section access in Cursor

Prerequisites

• Node.js 18.0.0 or higher (provides built-in fetch API for HTTP requests)

• npm or pnpm package manager

• Cursor (for MCP integration) or another MCP-compatible client

Installation

1. Clone this repository:

   git clone https://github.com/h0ck3ystyx/synergyde-mcp.git cd synergyde-mcp

2. Install dependencies:

   npm install # or pnpm install

3. Build the project:

   npm run build

4. Configure environment variables (optional):

   cp .env.example .env # Edit .env with your preferences

Configuration

The server can be configured via environment variables. All variables are optional and have sensible defaults.

Environment Variables

Configuration Details

• SYNERGYDE_DOC_BASE_URL: The base URL for the Synergy/DE documentation site. Should end with a trailing slash (automatically added if missing).

• SYNERGYDE_DOC_DEFAULT_VERSION: The default version to use when no version is specified in tool calls. Common values: "latest", "v111", "v112", etc.

• SYNERGYDE_LOCAL_DOC_PATH: If provided, enables local documentation support. The path must be readable and point to a directory containing local documentation files. When set, the server operates in "hybrid" mode, preferring local docs but falling back to online docs if a topic isn't found locally.

• SYNERGYDE_CACHE_DIR: Directory where parsed topics are cached on disk. The directory will be created automatically if it doesn't exist. Cached topics are stored as JSON files keyed by version and topic ID.

• LOG_LEVEL: Controls the verbosity of logging. Use debug for detailed information during development, info for normal operation, warn for warnings only, or error for errors only.

Example .env File

Usage

Running the Server

The server uses stdio transport and is designed to be launched by MCP clients:

The server will:

• Initialize configuration

• Connect to stdio transport

• Wait for MCP requests from clients

Note: The server is intended to be run by MCP clients (like Cursor), not directly. Running it manually will cause it to wait for input on stdin.

Cursor MCP Configuration

Add the server to your Cursor MCP configuration. The configuration file location depends on your setup:

• Global config: ~/.cursor/mcp.json (macOS/Linux) or %APPDATA%\Cursor\mcp.json (Windows)

• Project config: .cursor/mcp.json in your project root

Basic Configuration

Advanced Configuration with Local Docs

Important: Use absolute paths for the server executable and any file paths in the configuration.

Available Tools

The server exposes the following MCP tools:

search_docs

Search documentation topics using full-text search.

Parameters:

• query (required): Search query string

• version (optional): Documentation version (defaults to configured default)

• section (optional): Filter by section name

• limit (optional): Maximum number of results (default: 10)

Returns: Array of search results with relevance scores

get_topic

Fetch a documentation topic by ID or URL.

Parameters:

• topic_id (optional): Topic ID (e.g., "Language/variables.htm")

• url (optional): Full URL to the topic page

• version (optional): Documentation version

• max_chunks (optional): Maximum number of chunks to return (default: 3, 0 = no limit)

Returns: Topic object with chunked content

get_related_topics

Get related topics (previous, next, parent, related links) for a given topic.

Parameters:

• topic_id (required): Topic ID

• version (optional): Documentation version

Returns: RelatedTopics object with navigation links

list_section_topics

List all topics in a documentation section.

Parameters:

• section (required): Section name (e.g., "Language", "Reference")

• version (optional): Documentation version

• limit (optional): Maximum number of topics (default: 50)

Returns: Array of topic summaries

describe_docs

Get metadata about available documentation.

Parameters: None

Returns: DocMetadata with versions, sections, and source type

Available Resources

The server exposes the following MCP resources:

Topic Resource

URI: synergyde:topic/{topic_id} or synergyde:topic/{version}/{topic_id}

Returns plain text content of a documentation topic with metadata. Content is limited to ~8k tokens to fit within LLM context windows.

Examples:

• synergyde:topic/Language/variables.htm

• synergyde:topic/latest/Language/variables.htm

• synergyde:topic//Language/variables.htm (explicit no version)

Section Resource

URI: synergyde:section/{version}/{section}

Returns a plain text index of topics in a section with titles, IDs, URLs, and summaries. Content is limited to ~8k tokens.

Examples:

• synergyde:section/latest/Language

• synergyde:section/v111/Reference

Error Handling

All tools and resources return structured error payloads with the following format:

Common Error Codes

• INVALID_INPUT: Invalid input parameters (not retryable)

• TOPIC_NOT_FOUND: Requested topic doesn't exist (not retryable)

• SECTION_NOT_FOUND: Requested section doesn't exist (not retryable)

• VERSION_NOT_FOUND: Requested version doesn't exist (not retryable)

• NETWORK_ERROR: Network/HTTP error (usually retryable)

• CACHE_ERROR: Cache operation failed (usually retryable)

• PROVIDER_ERROR: Provider-specific error (not retryable)

• INTERNAL_ERROR: Unexpected internal error (not retryable)

Troubleshooting

Server won't start:

• Verify Node.js version: node --version (must be 18+)

• Check dependencies: npm install

• Verify TypeScript compilation: npm run build

• Check logs for specific error messages

Tools return errors:

• Verify network connectivity (for online provider)

• Check that topic IDs are correct

• Verify the documentation version exists

• Check server logs for detailed error information

Cache not working:

• Verify SYNERGYDE_CACHE_DIR is writable

• Check file permissions on cache directory

• Look for cache errors in server logs

Cursor integration issues:

• Verify MCP configuration file syntax (valid JSON)

• Use absolute paths for server executable

• Check Cursor's MCP server status/logs

• Restart Cursor after configuration changes

• Verify environment variables are set correctly

Development

Project Structure

Development Commands

Testing

The project uses Vitest for testing with comprehensive coverage:

• Unit tests: Test individual modules in isolation

• Integration tests: Test tool handlers and workflows

• End-to-end tests: Test complete flows (search → get_topic → get_related)

See MANUAL_TESTING.md for manual testing procedures.

Code Quality

• TypeScript: Strict type checking enabled

• ESLint: Code linting with TypeScript support

• Test Coverage: ≥80% statement coverage required

• Error Handling: Structured error payloads, no unhandled exceptions

Architecture

Design Principles

• Modularity: Small, composable modules with clear responsibilities

• Type Safety: Strong TypeScript typing throughout

• Error Handling: Structured errors, no unhandled exceptions

• Caching: Aggressive caching to minimize network calls

• Read-Only: No write operations, respect remote resources

• LLM-Friendly: Chunked, structured content optimized for AI consumption

• Deterministic: Idempotent operations, stable results

Key Components

1. Providers: Fetch documentation from online or local sources

2. Parser: Extract and structure content from HTML

3. Chunker: Split content into LLM-friendly chunks

4. Cache: Disk-based caching for parsed topics

5. Search Index: In-memory full-text search with relevance scoring

6. MCP Server: Expose tools and resources via Model Context Protocol

License

MIT

Contributing

Contributions are welcome! Please ensure:

• All tests pass: npm test

• Code is properly typed (no any types)

• Coverage remains ≥80%

• Linting passes: npm run lint