mcp-server-design.md•7.34 kB
# MCP Server Design for TON Access
## Overview
This document outlines the design for a production-level Model Context Protocol (MCP) server for the TON Access library. The MCP server will enable AI models like Claude to interact with the TON blockchain through a standardized interface.
## Architecture
### Client-Server Architecture
Following the MCP specification, our implementation will use a client-server architecture:
- **MCP Client**: Embedded in AI models like Claude
- **MCP Server**: Our implementation that exposes TON Access functionality
- **Transport Layer**: Communication between client and server (HTTP with SSE or stdio)
### Core Components
#### 1. Protocol Implementation
- Implements the MCP protocol using JSON-RPC 2.0
- Handles initialization, request/response, and notifications
- Manages connection lifecycle
#### 2. Resource Providers
- **FileSystem Resource**: Provides access to local configuration files
- **TON Blockchain Resource**: Exposes TON blockchain data and operations
#### 3. Tool Implementations
- **Query Tools**: For fetching blockchain data (balances, blocks, transactions)
- **Transaction Tools**: For creating and sending transactions
- **Contract Tools**: For interacting with smart contracts
#### 4. TON Access Integration
- Wraps the TON Access library functionality
- Manages node selection and health checking
- Handles protocol-specific endpoint generation
## Detailed Design
### 1. MCP Protocol Implementation
```typescript
import { Server } from "@modelcontextprotocol/sdk/server";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio";
// Core MCP server implementation
class TonAccessMCPServer {
private server: Server;
private transport: StdioServerTransport;
constructor() {
this.transport = new StdioServerTransport();
this.server = new Server({ transport: this.transport });
// Register resources and tools
this.registerResources();
this.registerTools();
}
private registerResources() {
// Register TON blockchain resource
this.server.registerResource("ton", new TonBlockchainResource());
// Register filesystem resource for configuration
this.server.registerResource("config", new ConfigFileResource());
}
private registerTools() {
// Register TON blockchain tools
this.server.registerTool("ton.getBalance", new GetBalanceTool());
this.server.registerTool("ton.getTransaction", new GetTransactionTool());
this.server.registerTool("ton.getBlock", new GetBlockTool());
this.server.registerTool("ton.callGetter", new CallGetterTool());
// Additional tools as needed
}
public start() {
this.server.start();
}
}
```
### 2. TON Blockchain Resource
```typescript
import { Resource } from "@modelcontextprotocol/sdk/server";
import { Access, getHttpEndpoint, getHttpV4Endpoint } from "@orbs-network/ton-access";
class TonBlockchainResource implements Resource {
private access: Access;
constructor() {
this.access = new Access();
}
async initialize() {
await this.access.init();
return { status: "ready" };
}
async getEndpoint(config: any) {
return await getHttpEndpoint(config);
}
async getV4Endpoint(config: any) {
return await getHttpV4Endpoint(config);
}
// Additional methods for TON blockchain interaction
}
```
### 3. Tool Implementations
```typescript
import { Tool } from "@modelcontextprotocol/sdk/server";
import { TonClient, Address } from "ton";
class GetBalanceTool implements Tool {
async execute(params: any, context: any) {
const { address, network } = params;
// Get TON blockchain resource
const tonResource = context.resources.ton;
// Get endpoint for specified network
const endpoint = await tonResource.getEndpoint({ network });
// Initialize TON client
const client = new TonClient({ endpoint });
// Get balance
const parsedAddress = Address.parseFriendly(address).address;
const balance = await client.getBalance(parsedAddress);
return { balance: balance.toString() };
}
}
class GetTransactionTool implements Tool {
async execute(params: any, context: any) {
const { address, lt, hash, network } = params;
// Get TON blockchain resource
const tonResource = context.resources.ton;
// Get endpoint for specified network
const endpoint = await tonResource.getEndpoint({ network });
// Initialize TON client
const client = new TonClient({ endpoint });
// Get transaction
const parsedAddress = Address.parseFriendly(address).address;
const tx = await client.getTransaction(parsedAddress, lt, hash);
return { transaction: tx };
}
}
// Additional tool implementations
```
### 4. Configuration File Resource
```typescript
import { Resource } from "@modelcontextprotocol/sdk/server";
import * as fs from "fs";
import * as path from "path";
class ConfigFileResource implements Resource {
private configDir: string;
constructor(configDir?: string) {
this.configDir = configDir || path.join(process.cwd(), "config");
}
async initialize() {
// Ensure config directory exists
if (!fs.existsSync(this.configDir)) {
fs.mkdirSync(this.configDir, { recursive: true });
}
return { status: "ready" };
}
async readConfig(filename: string) {
const filePath = path.join(this.configDir, filename);
if (!fs.existsSync(filePath)) {
return null;
}
const content = fs.readFileSync(filePath, "utf-8");
return JSON.parse(content);
}
async writeConfig(filename: string, data: any) {
const filePath = path.join(this.configDir, filename);
fs.writeFileSync(filePath, JSON.stringify(data, null, 2));
return { success: true };
}
}
```
## Integration with Claude Desktop
To use this MCP server with Claude Desktop, users will need to add the following to their `claude_desktop_config.json`:
```json
{
"mcpServers": {
"ton-access": {
"command": "npx",
"args": [
"-y",
"@orbs-network/ton-access-mcp"
]
}
}
}
```
## Security Considerations
1. **Access Control**: The MCP server will only allow operations within the scope of the TON Access library.
2. **Error Handling**: Comprehensive error handling to prevent crashes and provide meaningful error messages.
3. **Input Validation**: Thorough validation of all inputs to prevent injection attacks.
4. **Rate Limiting**: Respect rate limits imposed by TON nodes to prevent abuse.
5. **Logging**: Detailed logging for debugging and auditing purposes.
## Performance Considerations
1. **Caching**: Implement caching for frequently accessed data to reduce load on TON nodes.
2. **Connection Pooling**: Reuse connections to TON nodes to improve performance.
3. **Asynchronous Processing**: Use asynchronous processing for non-blocking operations.
4. **Load Balancing**: Leverage TON Access's load balancing capabilities to distribute requests across healthy nodes.
## Next Steps
1. Implement the MCP server based on this design
2. Create comprehensive documentation
3. Develop tests to validate the implementation
4. Package the server for easy distribution and installation
5. Create example integrations with Claude and other AI models