Midnight MCP Server

A Model Context Protocol (MCP) server implementation with STDIO transport for the Midnight network.

Overview

This server implements the Model Context Protocol for integration with the Midnight cryptocurrency network. It provides a standard interface for AI models to interact with the Midnight blockchain, wallet functionality, and other network services.

The architecture consists of two main components:

1. Wallet Server (server.ts) - An Express.js HTTP server that runs the wallet logic and exposes REST API endpoints

2. STDIO Server (stdio-server.ts) - An MCP-compliant server that acts as a proxy, forwarding tool calls to the wallet server via HTTP requests

Related MCP server: dev-loop-mcp

Quick Start

Prerequisites

• Node.js (v18.20.5)

• Yarn package manager

• Docker and Docker Compose (for production deployment)

Basic Setup

# Install dependencies
yarn install

# Build
yarn build

# Set up a new agent
yarn setup-agent -a <agent-name>

# Or set up with a specific hex seed (32-byte entropy)
yarn setup-agent -a <agent-name> -s "your-hex-seed-here"

# Or set up with a BIP39 mnemonic phrase
yarn setup-agent -a <agent-name> -m "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about"

# Follow the instructions in the terminal

Note: The setup scripts support both hex seeds (32-byte entropy) and BIP39 mnemonic phrases. The hex seed is the actual entropy used by the Midnight wallet, while the mnemonic is a human-readable representation of the same cryptographic material.

For detailed setup instructions, see docs/setup-guide.md.

Project Structure

midnight-mcp/
├── src/                    # Source code
│   ├── mcp/               # MCP protocol implementation
│   ├── wallet/            # Wallet management
│   ├── logger/            # Logging system
│   ├── audit/             # Audit trail system
│   └── server.ts          # Express server
├── test/                  # Test suites
│   ├── unit/              # Unit tests
│   ├── integration/       # Integration tests
│   └── e2e/               # End-to-end tests
├── docs/                  # Documentation
│   ├── index.md           # Documentation index
│   ├── system-design.md   # Architecture & API flows
│   ├── setup-guide.md     # Complete setup guide
│   └── wallet-mcp-api.md  # API reference
├── scripts/               # Setup and utility scripts
├── agents/                # Agent-specific configurations
└── docker-compose.yml     # Docker deployment

Architecture

The Midnight MCP server follows a layered architecture:

• MCP Protocol Layer: STDIO server implementing the Model Context Protocol

• HTTP Communication Layer: HTTP client for wallet server communication

• Wallet Server Layer: Express.js server with wallet logic and REST API

• Storage Layer: File-based storage for seeds, transactions, and backups

• External Services: Integration with Midnight blockchain services

For detailed architecture diagrams and API flows, see docs/system-design.md.

Documentation

For complete documentation, including setup guides, API reference, testing, and integration examples, see docs/index.md.

License

This project is licensed under the MIT License.