#!/usr/bin/env node
import { Server } from '@modelcontextprotocol/sdk/server/index.js';
import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js';
import { z } from 'zod'; // Import Zod
import {
CallToolRequestSchema,
ListToolsRequestSchema,
McpError,
ErrorCode,
} from '@modelcontextprotocol/sdk/types.js';
// Import the aggregated tool definitions
import { allToolDefinitions } from './handlers/index.js';
// Removed incorrect import left over from partial diff
// --- Tool Names (Constants) ---
// Removed tool name constants, names are now in the definitions
// --- Server Setup ---
const server = new Server(
{
name: 'pdf-reader-mcp',
version: '0.4.1', // Fixed JSON Schema compatibility issue
description: 'MCP Server for PDF reading operations relative to the project root.',
},
{
capabilities: { tools: {} },
}
);
// Helper function to convert Zod schema to JSON schema for MCP
// Zod v4 natively supports JSON Schema generation with default target: JSON Schema 2020-12
const generateInputSchema = (schema: z.ZodType): object => {
// Use Zod v4's native toJSONSchema() - defaults to JSON Schema 2020-12 (perfect for MCP!)
return z.toJSONSchema(schema) as object;
};
server.setRequestHandler(ListToolsRequestSchema, () => {
// Removed unnecessary async
// Removed log
// Map the aggregated definitions to the format expected by the SDK
const availableTools = allToolDefinitions.map((def) => ({
name: def.name,
description: def.description,
inputSchema: generateInputSchema(def.schema), // Generate JSON schema from Zod schema
}));
return { tools: availableTools };
});
server.setRequestHandler(CallToolRequestSchema, async (request) => {
// Use imported handlers
// Find the tool definition by name and call its handler
const toolDefinition = allToolDefinitions.find((def) => def.name === request.params.name);
if (!toolDefinition) {
throw new McpError(ErrorCode.MethodNotFound, `Unknown tool: ${request.params.name}`);
}
// Call the handler associated with the found definition
// The handler itself will perform Zod validation on the arguments
return toolDefinition.handler(request.params.arguments);
});
// --- Server Start ---
async function main(): Promise<void> {
const transport = new StdioServerTransport();
await server.connect(transport);
console.error('[PDF Reader MCP] Server running on stdio');
}
main().catch((error: unknown) => {
// Specify 'unknown' type for catch variable
console.error('[PDF Reader MCP] Server error:', error);
process.exit(1);
});
