#!/usr/bin/env node
import { Server } from '@modelcontextprotocol/sdk/server/index.js';
import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
import { CallToolRequestSchema, ListToolsRequestSchema, CallToolResult } from '@modelcontextprotocol/sdk/types.js';
import { addToolHandler } from './tools/add.js';
import { getToolHandler } from './tools/get.js';
import { showToolHandler } from './tools/show.js';
import { updateJSONToolHandler } from './tools/update-json.js';
import { testThingsAvailable } from './lib/applescript.js';
import { toolRegistry } from './lib/tool-registry.js';
// Register all tool handlers
toolRegistry.registerToolHandler(addToolHandler);
toolRegistry.registerToolHandler(getToolHandler);
toolRegistry.registerToolHandler(showToolHandler);
toolRegistry.registerToolHandler(updateJSONToolHandler);
// Create MCP server
const server = new Server(
{
name: 'things-mcp',
version: '1.0.0',
},
{
capabilities: {
tools: {},
},
}
);
// Handler for listing tools
server.setRequestHandler(ListToolsRequestSchema, async () => {
return {
tools: toolRegistry.getAllTools(),
};
});
// Handler for executing tools
server.setRequestHandler(CallToolRequestSchema, async (request): Promise<CallToolResult> => {
const { name, arguments: args } = request.params;
try {
return await toolRegistry.executeHandler(name, args || {});
} catch (error) {
// Fallback error handling for unexpected registry errors
return {
isError: true,
content: [
{
type: "text",
text: error instanceof Error ? error.message : 'An unexpected error occurred'
}
]
};
}
});
// Initialize server
async function main() {
try {
// Check if Things is available
const thingsAvailable = await testThingsAvailable();
if (!thingsAvailable) {
console.error('Warning: Things 3 does not appear to be running');
}
// Start server
const transport = new StdioServerTransport();
await server.connect(transport);
console.error('Things MCP server started successfully');
} catch (error) {
console.error('Failed to start server:', error);
process.exit(1);
}
}
// Handle process termination
process.on('SIGINT', () => {
console.error('Server shutting down');
process.exit(0);
});
process.on('SIGTERM', () => {
console.error('Server shutting down');
process.exit(0);
});
// Start the server
main().catch((error) => {
console.error('Server error:', error);
process.exit(1);
});
