Cyberlink MCP Server

A Model Context Protocol (MCP) server for interacting with the CW-Social smart contract on Cosmos-based blockchains. This server provides a standardized interface for creating, updating, and querying cyberlinks - semantic relationships between entities on the blockchain.

Features

• Core Operations

  • Create, read, update, and delete cyberlinks
  • Support for named cyberlinks with custom identifiers
  • Batch operations for efficient processing
  • Rich query capabilities with filtering and pagination

• Transaction Management

  • Real-time transaction monitoring and status polling
  • Detailed transaction results and error handling
  • Support for both internal and external transaction signing
  • Token transfer capabilities

• Advanced Features

  • Semantic embedding generation via Hugging Face transformers
  • Real-time progress tracking for model operations
  • Cosine similarity calculations for semantic matching
  • Flexible ID system with formatted IDs (fids) and global IDs (gids)
  • Time-range based queries with UTC support
  • Owner-based filtering and statistics

Prerequisites

• Node.js 16 or higher
• npm or yarn package manager
• Access to a running Cosmos blockchain node
• Wallet with sufficient funds for transactions
• Cursor IDE for development
• Claude Desktop for AI assistance

Installation

1. Clone the repository:

git clone https://github.com/your-org/cw-social-mcp.git
cd cw-social-mcp

2. Install dependencies:

npm install

3. Build the project:

npm run build

4. Configure environment variables (see Configuration section)

Configuration

MCP Server Setup

Create or modify the configuration file at ~/.cursor/mcp.json:

{
  "mcpServers": {
    "cw-graph": {
      "command": "node",
      "args": ["PATH_TO_YOUR_PROJECT/dist/index.js"],
      "env": {
        "NODE_URL": "http://localhost:26657",
        "WALLET_MNEMONIC": "your wallet mnemonic phrase",
        "CONTRACT_ADDRESS": "your contract address",
        "DENOM": "stake",
        "BENCH32_PREFIX": "cyber"
      }
    }
  }
}

Required Configuration

Required environment variables:

• PATH_TO_YOUR_PROJECT: Absolute path to project directory
• NODE_URL: Cosmos blockchain node URL
• CONTRACT_ADDRESS: Deployed smart contract address

Optional Configuration

Optional environment variables:

• WALLET_MNEMONIC: Wallet mnemonic for signing (default: none - transactions will be unsigned)
• DENOM: Token denomination (default: "stake")
• BENCH32_PREFIX: BECH32 prefix

Available Tools

Cyberlink Management

Creation Tools

create_cyberlink

• Description: Create single cyberlink
• Required: type
• Optional: from, to, value

create_cyberlink2

• Description: Create node + link
• Required: node_type, link_type
• Optional: node_value, link_value, link_to_existing_id, link_from_existing_id

create_named_cyberlink

• Description: Create named cyberlink (admin only)
• Required: name, cyberlink

create_cyberlinks

• Description: Batch create cyberlinks
• Required: cyberlinks[]

Modification Tools

update_cyberlink

• Description: Update existing cyberlink
• Required: gid, cyberlink

delete_cyberlink

• Description: Remove cyberlink
• Required: gid

update_with_embedding

• Description: Add semantic embedding
• Required: formatted_id

Query Operations

Basic Queries

query_by_gid

• Description: Get by global ID
• Required: gid

query_by_fid

• Description: Get by formatted ID
• Required: fid

query_cyberlinks

• Description: List all with pagination
• Parameters: limit, start_after

query_named_cyberlinks

• Description: List named cyberlinks
• Parameters: limit, start_after

query_by_gids

• Description: Get multiple by IDs
• Required: gids[]

Filtered Queries

query_cyberlinks_by_type

• Description: Filter by type
• Required: type

query_cyberlinks_by_from

• Description: Filter by source
• Required: from

query_cyberlinks_by_to

• Description: Filter by target
• Required: to

query_cyberlinks_by_owner_and_type

• Description: Filter by owner & type
• Required: owner, type

Time-Based Queries

query_cyberlinks_by_owner_time

• Description: Filter by creation time
• Required: owner, start_time

query_cyberlinks_by_owner_time_any

• Description: Filter by any time
• Required: owner, start_time

System Operations

Contract Info

query_last_id

• Description: Get last assigned ID

query_config

• Description: Get contract config

query_debug_state

• Description: Get debug state (admin only)

get_graph_stats

• Description: Get graph statistics

Transaction & Wallet

query_transaction

• Description: Get tx status
• Required: transaction_hash

get_tx_status

• Description: Get detailed tx status
• Required: transaction_hash

query_wallet_balance

• Description: Get wallet balances

send_tokens

• Description: Transfer tokens
• Required: recipient, amount

Query Parameters

Time Range Format

• All timestamps must be in ISO 8601 format
• Example: 2024-06-01T12:00:00Z
• UTC timezone is assumed if not specified
• start_time is required, end_time is optional

Pagination

• start_after: Pagination cursor
• limit: Results per page (default: 50)

Development

Build Commands

# Production build
npm run build

# Development mode
npm run dev

Project Structure

src/
├── index.ts                # Entry point
├── cyberlink-service.ts    # Core service
├── services/
│   ├── embedding.service.ts  # Semantic analysis
│   └── __tests__/           # Test suite
└── types.ts                # Type definitions

cursor_rules/
└── chat_history.mdc       # Chat rules

Error Codes

InvalidParams

• Description: Invalid parameters
• Common causes: Missing required fields, wrong format

MethodNotFound

• Description: Unknown tool
• Common causes: Typo in tool name, deprecated tool

InternalError

• Description: System error
• Common causes: Network issues, contract errors

Run MCP over SSE

You can run the MCP server using Docker to turn it into an SSE server. This ensures the Hugging Face model cache is persisted between runs and that environment variables are loaded from your .env file.

docker run \
  --name cw-social \
  -v $(pwd)/hf-cache:/app/hf-cache \
  --env-file .env \
  -p 8000:8000 \
  cw-social-mcp

• -v $(pwd)/hf-cache:/app/hf-cache mounts a local directory for model caching, so models are not re-downloaded every time.
• --env-file .env loads environment variables from your .env file.
• -p 8000:8000 exposes the server on port 8000.
• --name cw-social names your container for easier management.

Contributing

1. Fork the repository
2. Create a feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open a Pull Request

License

This project is licensed under the MIT License - see the LICENSE file for details.