screen-view-mcp/dist/screen-capture-mcp.js

MCP tool for capturing screenshots and analyzing them with Claude Vision API

#!/usr/bin/env node
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
// Screen capture MCP server with direct module imports
const path_1 = __importDefault(require("path"));
const zod_1 = require("zod");
const screenshot_1 = require("./services/screenshot");
const vision_1 = require("./services/vision");
// Use dynamic require for MCP SDK to avoid ESM/CommonJS issues
const sdkBasePath = path_1.default.join(__dirname, '../node_modules/@modelcontextprotocol/sdk');
const mcpPath = path_1.default.join(sdkBasePath, 'dist/cjs/server/mcp.js');
const stdioPath = path_1.default.join(sdkBasePath, 'dist/cjs/server/stdio.js');
// Import MCP SDK modules using require
const mcp = require(mcpPath);
const stdio = require(stdioPath);
/**
 * Main function to initialize and run the MCP server
 */
async function main() {
    try {
        console.log('Starting screen capture MCP server...');
        console.log('All modules loaded');
        console.log('API_KEY_SET:', !!process.env.ANTHROPIC_API_KEY);
        // Create server
        const server = new mcp.McpServer({
            name: "screen-view-mcp",
            version: "1.0.0",
            description: "Screen capture and analysis with Claude Vision"
        });
        // Register the hello world tool for testing
        server.tool("helloWorld", {
            message: zod_1.z.string().optional()
        }, async ({ message }) => {
            console.log('Hello world tool invoked with message:', message);
            return {
                content: [{
                        type: "text",
                        text: `Hello! You said: "${message || 'No message provided'}"`
                    }]
            };
        });
        // Register the screen capture and analysis tool
        server.tool("captureAndAnalyzeScreen", {
            prompt: zod_1.z.string().optional(),
            modelName: zod_1.z.string().optional(),
            saveScreenshot: zod_1.z.boolean().optional()
        }, async ({ prompt, modelName, saveScreenshot }) => {
            try {
                console.log('Capturing screenshot...');
                const screenshotBase64 = await (0, screenshot_1.captureScreenshot)();
                const analysisPrompt = prompt || 'What do you see in this screenshot? Describe it in detail.';
                const model = modelName || 'claude-3-opus-20240229';
                console.log('Analyzing image with Claude...');
                const analysis = await (0, vision_1.analyzeImage)(screenshotBase64, analysisPrompt, model);
                console.log('Analysis complete');
                return {
                    content: [{ type: "text", text: analysis }]
                };
            }
            catch (error) {
                const errorMessage = error instanceof Error ? error.message : 'Unknown error';
                console.error('Error in screen_capture tool:', errorMessage);
                return {
                    content: [{
                            type: "text",
                            text: `Error analyzing screenshot: ${errorMessage}`
                        }]
                };
            }
        });
        // Connect with stdio transport
        console.log('Connecting server with stdio transport...');
        const transport = new stdio.StdioServerTransport();
        server.connect(transport)
            .then(() => console.log('MCP Server connected successfully'))
            .catch((err) => {
            console.error('Connection error:', err);
            process.exit(1);
        });
    }
    catch (error) {
        const errorMessage = error instanceof Error ? error.message : 'Unknown error';
        console.error('Fatal error initializing MCP server:', errorMessage);
        console.error(error instanceof Error ? error.stack : '');
        process.exit(1);
    }
}
// Run the main function
main();