MCP Word Counter
by qpd-v
#!/usr/bin/env node
import { Server } from "@modelcontextprotocol/sdk/server/index.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import {
CallToolRequestSchema,
ErrorCode,
ListToolsRequestSchema,
McpError,
} from "@modelcontextprotocol/sdk/types.js";
import { WordCounter } from "./wordCounter.js";
// Initialize the server and word counter
const server = new Server(
{
name: "mcp-wordcounter",
version: "0.1.0",
},
{
capabilities: {
tools: {},
},
}
);
const wordCounter = new WordCounter();
// List available tools
server.setRequestHandler(ListToolsRequestSchema, async () => ({
tools: [
{
name: "analyze_text",
description: "Count words and characters in a text document",
inputSchema: {
type: "object",
properties: {
filePath: {
type: "string",
description: "Path to the text file to analyze"
}
},
required: ["filePath"]
}
}
]
}));
// Handle tool execution
server.setRequestHandler(CallToolRequestSchema, async (request) => {
if (request.params.name !== "analyze_text") {
throw new McpError(
ErrorCode.MethodNotFound,
`Unknown tool: ${request.params.name}`
);
}
const filePath = request.params.arguments?.filePath;
if (!filePath || typeof filePath !== "string") {
throw new McpError(
ErrorCode.InvalidParams,
"File path parameter is required and must be a string"
);
}
try {
const stats = await wordCounter.analyzeFile(filePath);
return {
content: [
{
type: "text",
text: `Analysis Results:
• Word count: ${stats.words}
• Character count (including spaces): ${stats.characters}
• Character count (excluding spaces): ${stats.charactersNoSpaces}`
}
]
};
} catch (error) {
return {
isError: true,
content: [
{
type: "text",
text: `Error analyzing file: ${error instanceof Error ? error.message : String(error)}`
}
]
};
}
});
// Run the server
async function main() {
const transport = new StdioServerTransport();
await server.connect(transport);
console.error("Word Counter MCP server running on stdio");
}
main().catch(console.error);