Arbitrum MCP Server

A Model Context Protocol (MCP) server for interfacing with Arbitrum Nitro nodes and chains in natural language. Monitor chain health, batch posting, assertions, and gas prices across all Arbitrum networks including core chains (Arbitrum One, Nova) and Orbit chains.

Demo

Monitor Arbitrum chains with natural language queries through any MCP-compatible client

Features

Core Monitoring Tools

• Comprehensive Chain Status - Complete health overview for any Arbitrum chain
• Batch Posting Monitoring - Track sequencer batch delivery and backlog
• Assertion Monitoring - Monitor NodeCreated vs NodeConfirmed events
• Gas Price Monitoring - Track current gas prices and detect spikes
• ArbOS Version Detection - Get current ArbOS version for any chain

Chain Support

• Core Arbitrum Chains - Arbitrum One, Arbitrum Nova
• Orbit Chains - All public Orbit chains (Xai, Superposition, etc.)
• Auto-Resolution - Contract addresses resolved automatically from chain names

Arbitrum Node APIs

• Health checks and sync status
• Transaction tracing (arbtrace_*)
• Debug and validation APIs
• Maintenance operations
• Timeboost express lanes

Usage Examples

"What is the current status of Xai?"

comprehensive_chain_status --chainName "Xai"

"Are batches being posted for Arbitrum One?"

batch_posting_status --chainName "Arbitrum One"

"Check gas prices on Nova"

gas_status --chainName "Nova"

Available Tools

Monitoring Tools

• comprehensive_chain_status - Complete chain health overview
• batch_posting_status - Batch posting monitoring
• assertion_status - Assertion creation/confirmation tracking
• gas_status - Current gas price information

Chain Information

• list_chains - Show all available Arbitrum chains
• search_chains - Find chains by name or ID
• chain_info - Get detailed chain information
• arbos_version - Get ArbOS version for any chain

Node Operations

• node_health - Check node health status
• sync_status - Get synchronization status
• latest_block - Get latest block information

Account Operations

• get_balance / get_balance_ether - Check account balances
• get_transaction / get_transaction_receipt - Transaction details
• is_contract - Check if address is a contract

Key Benefits

• Comprehensive Monitoring - Complete chain health overview in one query
• Multi-Chain Support - Consistent interface across all Arbitrum chains
• Natural Language Interface - Query blockchain data using plain English
• Real-Time Data - Live blockchain data with automatic chain discovery
• Troubleshooting Ready - Quick health checks for issue diagnosis
• Gas & Performance Tracking - Monitor network congestion and costs

Setup & Installation

Docker (Recommended)

The easiest way to run the MCP server with maximum client compatibility:

# Build and run
npm run docker:compose:build

# For MCP clients, use:
docker run -i --rm arbitrum-mcp

Direct Node.js

# Install dependencies
npm install

# Build
npm run build

# Run
npm start

MCP Client Configuration

Claude Desktop

Add to your Claude Desktop configuration:

{
  "mcpServers": {
    "arbitrum-mcp": {
      "command": "docker",
      "args": ["run", "-i", "--rm", "arbitrum-mcp"]
    }
  }
}

Cline/Claude Code

{
  "mcpServers": {
    "arbitrum-mcp": {
      "command": "docker",
      "args": ["run", "-i", "--rm", "arbitrum-mcp"]
    }
  }
}

Development

# Install dependencies
npm install

# Build
npm run build

# Run tests
npm test

# Development mode with watch
npm run dev

Docker

See DOCKER.md for detailed Docker setup instructions.

⚠️ Important: When using Docker containers to connect to local testnodes, use http://host.docker.internal:8547 instead of http://127.0.0.1:8547 for the RPC URL.

Technology Stack

• TypeScript - Type-safe development
• Viem - Ethereum client for blockchain interactions
• @arbitrum/sdk - Official Arbitrum SDK for core chain data
• MCP SDK - Model Context Protocol implementation
• Docker - Containerized deployment

Contributing

1. Fork the repository
2. Create a feature branch
3. Add tests for new functionality
4. Submit a pull request

License

MIT License - see LICENSE file for details.