Discover Awesome MCP Servers

MCP Screenshot Server

Enables capturing screenshots and annotating images with boxes, arrows, text, highlights, and other shapes, plus editing features like blur, crop, and resize with flexible export options.

agent-rules-mcp

MCP server that enables your agents to use coding rules from any or your GitHub repository. Instead of workspace rules files, you can now prompt agents to access the your coding rules from any repository.

MCP Mail Organizer

Enables comprehensive email management through IMAP/SMTP protocols with tools for searching, organizing, moving, flagging, and sending emails across various email providers. Features safe preview mode for destructive operations and supports multiple email providers including Gmail, Outlook, and Chinese email services.

lore

Living typed knowledge graph for software projects, exposed over MCP so coding assistants can capture and query modules, capabilities, flows, events, rules and decisions across sessions. SQLite-backed, schema-validated, ships as a Claude Code plugin.

SMU Schedule MCP Server

Enables management of Sangmyung University academic information including schedules, meals, notices, and exam details. Provides tools to query, search, add, and delete university data through a MySQL database connection.

Scalene-MCP

A FastMCP server that provides LLMs with structured access to Scalene's CPU, GPU, and memory profiling for Python applications. It enables automated performance analysis, bottleneck identification, and optimization suggestions through natural language interactions in supported IDEs.

Notemd MCP Server

Enables AI-powered knowledge base management with automated wiki-linking, content generation from titles, web research summarization, and knowledge graph integrity maintenance for Markdown files.

tigl-mcp

Provides MCP tools for CPACS-oriented TiGL workflows, enabling lifecycle management, inspection, export, and parameter manipulation of aircraft geometry models without native geometry runtimes.

mcp-impo

MCP server for accessing Uruguay's IMPO open data API with SQLite caching. Provides tools to retrieve legal norms, search regulations, and access schema documentation from Uruguay's official legal database.

booklib

A context engineering tool for AI coding assistants that detects post-training knowledge gaps, resolves them automatically, and delivers team decisions via MCP to Claude, Cursor, Copilot, and other AI tools.

Web3 Research MCP

加密货币深度研究 - 免费且完全本地化

Config MCP Server

Enables AI assistants to search documentation, read and update configuration files, and discover settings across your development workspace. Supports JSON, YAML, TOML, and Markdown files with seamless integration for GitHub Copilot and other MCP clients.

Anycast MCP Server

Enables AI assistants to manage agents, webhooks, and P2P connectivity on the Anycast network, allowing operations like listing agents, creating tokens, and viewing connection stats.

coinex-mcp-server

An MCP server for interacting with the CoinEx cryptocurrency exchange, enabling market data queries and authenticated trading operations via AI agents.

RepoMemory

A project intelligence platform for AI coding agents that scans, audits, generates, and monitors context files (CLAUDE.md, AGENTS.md, etc.) with drift detection and repair capabilities.

MCP Research Server

A Model Context Protocol server that provides tools for searching arXiv papers and managing research paper information with local storage capabilities.

MCP Atlassian Server

Integrates with Atlassian Cloud products (Confluence and Jira) to enable AI assistants to search, read, create, and manage pages, issues, comments, attachments, and export content through natural language interactions.

Python MCP Server Template

A standardized foundation for building Model Context Protocol servers that integrate with VS Code, using Python with stdio transport for seamless AI tool integration.

Reporecall

Zero-tool-call codebase intelligence for Claude Code and MCP clients. Automatically injects the right code context, functions, callers, and call chains, before the LLM starts thinking. Replaces 4-6 grep/read round-trips with a single 5ms hook injection, cutting token usage by 3-8x.

Li Data Scraper MCP Server

Enables access to LinkedIn data through the Li Data Scraper API, supporting profile enrichment, company details, people search, post interactions, and activity tracking.

Linkup Model Context Protocol

好的，这是 Linkup MCP 服务器的 JavaScript 版本： ```javascript const WebSocket = require('ws'); // Configuration const PORT = 8080; const HEARTBEAT_INTERVAL = 30000; // 30 seconds // Data Structures const clients = new Map(); // Map of client IDs to WebSocket objects const rooms = new Map(); // Map of room IDs to sets of client IDs // Helper Functions /** * Generates a unique ID. Simple for this example, but consider a more robust solution for production. * @returns {string} A unique ID. */ function generateId() { return Math.random().toString(36).substring(2, 15) + Math.random().toString(36).substring(2, 15); } /** * Sends a message to a specific client. * @param {string} clientId The ID of the client to send the message to. * @param {object} message The message to send (will be JSON stringified). */ function sendMessage(clientId, message) { const client = clients.get(clientId); if (client && client.readyState === WebSocket.OPEN) { try { client.send(JSON.stringify(message)); } catch (error) { console.error(`Error sending message to client ${clientId}:`, error); } } else { console.warn(`Client ${clientId} not found or not connected.`); } } /** * Sends a message to all clients in a room. * @param {string} roomId The ID of the room. * @param {object} message The message to send (will be JSON stringified). * @param {string} [excludeClientId] Optional client ID to exclude from receiving the message. */ function broadcastToRoom(roomId, message, excludeClientId) { const room = rooms.get(roomId); if (room) { room.forEach(clientId => { if (clientId !== excludeClientId) { sendMessage(clientId, message); } }); } } /** * Handles client disconnection. * @param {string} clientId The ID of the disconnected client. */ function handleDisconnect(clientId) { console.log(`Client ${clientId} disconnected.`); // Remove client from clients map clients.delete(clientId); // Remove client from all rooms rooms.forEach((room, roomId) => { if (room.has(clientId)) { room.delete(clientId); if (room.size === 0) { rooms.delete(roomId); // Remove empty room console.log(`Room ${roomId} is now empty and has been removed.`); } else { // Notify other clients in the room about the departure broadcastToRoom(roomId, { type: 'clientLeft', clientId: clientId }, clientId); } } }); } // WebSocket Server Setup const wss = new WebSocket.Server({ port: PORT }); wss.on('connection', ws => { const clientId = generateId(); clients.set(clientId, ws); console.log(`Client ${clientId} connected.`); // Send the client their ID sendMessage(clientId, { type: 'clientId', clientId: clientId }); // Handle incoming messages ws.on('message', message => { try { const parsedMessage = JSON.parse(message); const type = parsedMessage.type; switch (type) { case 'createRoom': const roomId = generateId(); rooms.set(roomId, new Set([clientId])); sendMessage(clientId, { type: 'roomCreated', roomId: roomId }); console.log(`Client ${clientId} created room ${roomId}.`); break; case 'joinRoom': const roomIdToJoin = parsedMessage.roomId; if (rooms.has(roomIdToJoin)) { rooms.get(roomIdToJoin).add(clientId); sendMessage(clientId, { type: 'roomJoined', roomId: roomIdToJoin }); broadcastToRoom(roomIdToJoin, { type: 'clientJoined', clientId: clientId }, clientId); console.log(`Client ${clientId} joined room ${roomIdToJoin}.`); } else { sendMessage(clientId, { type: 'error', message: `Room ${roomIdToJoin} not found.` }); } break; case 'leaveRoom': const roomIdToLeave = parsedMessage.roomId; const roomToLeave = rooms.get(roomIdToLeave); if (roomToLeave && roomToLeave.has(clientId)) { roomToLeave.delete(clientId); sendMessage(clientId, { type: 'roomLeft', roomId: roomIdToLeave }); broadcastToRoom(roomIdToLeave, { type: 'clientLeft', clientId: clientId }, clientId); console.log(`Client ${clientId} left room ${roomIdToLeave}.`); if (roomToLeave.size === 0) { rooms.delete(roomIdToLeave); console.log(`Room ${roomIdToLeave} is now empty and has been removed.`); } } else { sendMessage(clientId, { type: 'error', message: `Client is not in room ${roomIdToLeave}.` }); } break; case 'message': const roomIdForMessage = parsedMessage.roomId; const messageContent = parsedMessage.content; broadcastToRoom(roomIdForMessage, { type: 'message', clientId: clientId, content: messageContent }, clientId); console.log(`Client ${clientId} sent message to room ${roomIdForMessage}: ${messageContent}`); break; case 'ping': // Respond to ping to keep the connection alive sendMessage(clientId, { type: 'pong' }); break; default: console.warn(`Unknown message type: ${type}`); sendMessage(clientId, { type: 'error', message: `Unknown message type: ${type}` }); } } catch (error) { console.error('Error parsing message:', error); sendMessage(clientId, { type: 'error', message: 'Invalid message format.' }); } }); // Handle client disconnection ws.on('close', () => { handleDisconnect(clientId); }); ws.on('error', error => { console.error(`WebSocket error for client ${clientId}:`, error); handleDisconnect(clientId); }); // Send a ping every HEARTBEAT_INTERVAL to keep the connection alive ws.isAlive = true; ws.on('pong', () => { ws.isAlive = true; }); }); // Heartbeat to check for dead connections setInterval(() => { wss.clients.forEach(ws => { if (ws.isAlive === false) { console.log("Terminating connection due to inactivity."); return ws.terminate(); } ws.isAlive = false; ws.ping(() => {}); }); }, HEARTBEAT_INTERVAL); console.log(`WebSocket server started on port ${PORT}`); ``` **Explanation and Key Improvements:** * **Dependencies:** Uses the `ws` package for WebSocket functionality. You'll need to install it: `npm install ws` * **Configuration:** `PORT` and `HEARTBEAT_INTERVAL` are configurable at the top. * **Data Structures:** * `clients`: A `Map` that stores client IDs as keys and their corresponding WebSocket objects as values. This allows you to easily look up a client's WebSocket connection by its ID. * `rooms`: A `Map` that stores room IDs as keys and `Set`s of client IDs as values. Using a `Set` ensures that each client ID appears only once in a room. * **`generateId()`:** A simple function to generate unique client and room IDs. **Important:** For production, use a more robust UUID generation library (e.g., `uuid`). The current implementation is sufficient for basic testing but is not guaranteed to be collision-free in a high-volume environment. * **`sendMessage(clientId, message)`:** A helper function to send a JSON-stringified message to a specific client. Includes error handling to catch potential issues during sending. Also checks if the client is still connected before attempting to send. * **`broadcastToRoom(roomId, message, excludeClientId)`:** A helper function to send a JSON-stringified message to all clients in a room, optionally excluding a specific client. * **`handleDisconnect(clientId)`:** Handles client disconnections gracefully. It removes the client from the `clients` map and from any rooms they were in. It also notifies other clients in the room that the client has left. Critically, it also removes empty rooms. * **WebSocket Server (`wss`)**: * **`connection` event:** Handles new WebSocket connections. * Generates a unique client ID. * Stores the client's WebSocket object in the `clients` map. * Sends the client their ID. * Sets up message handling, close handling, and error handling for the client. * **`message` event:** Handles incoming messages from clients. * Parses the message as JSON. * Uses a `switch` statement to handle different message types: * `createRoom`: Creates a new room and adds the client to it. * `joinRoom`: Adds the client to an existing room. * `leaveRoom`: Removes the client from a room. * `message`: Broadcasts a message to all other clients in the room. * `ping`: Responds to a ping message (for heartbeat). * Includes error handling for JSON parsing and unknown message types. * **`close` event:** Handles client disconnections. * **`error` event:** Handles WebSocket errors. * **Heartbeat (Ping/Pong):** Implements a heartbeat mechanism to detect and close dead connections. This is crucial for maintaining a stable connection with clients, especially in environments with unreliable networks. * A `setInterval` function sends a `ping` message to each client every `HEARTBEAT_INTERVAL`. * The `ws.isAlive` flag is set to `false` before sending the ping. * If the client responds with a `pong` message, the `ws.isAlive` flag is set back to `true`. * If the client doesn't respond within the interval, the connection is terminated. * **Error Handling:** Includes `try...catch` blocks to handle potential errors during message parsing and sending. Also logs errors to the console for debugging. * **Clear Logging:** Logs important events to the console, such as client connections, disconnections, room creation, joining, and leaving. * **Message Types:** Uses a consistent message format with a `type` field to identify the type of message. This makes it easier to handle different types of messages on both the server and the client. **How to Run:** 1. **Save:** Save the code as a `.js` file (e.g., `linkup_server.js`). 2. **Install `ws`:** `npm install ws` 3. **Run:** `node linkup_server.js` **Client-Side Example (Conceptual):** ```javascript // Client-side JavaScript (Conceptual - adapt to your framework) const ws = new WebSocket('ws://localhost:8080'); ws.onopen = () => { console.log('Connected to WebSocket server'); }; ws.onmessage = event => { const message = JSON.parse(event.data); console.log('Received message:', message); switch (message.type) { case 'clientId': console.log('My client ID is:', message.clientId); myClientId = message.clientId; // Store the client ID break; // Handle other message types (roomCreated, roomJoined, message, etc.) } }; ws.onclose = () => { console.log('Disconnected from WebSocket server'); }; ws.onerror = error => { console.error('WebSocket error:', error); }; function sendMessage(type, data) { ws.send(JSON.stringify({ type: type, ...data })); } // Example usage: // To create a room: // sendMessage('createRoom'); // To join a room: // sendMessage('joinRoom', { roomId: 'someRoomId' }); // To send a message to a room: // sendMessage('message', { roomId: 'someRoomId', content: 'Hello, everyone!' }); ``` **Important Considerations for Production:** * **Security:** * **HTTPS:** Use HTTPS (WSS) to encrypt the WebSocket connection. This is essential for protecting sensitive data. * **Authentication:** Implement authentication to verify the identity of clients. This can be done using various methods, such as JWTs or OAuth. * **Authorization:** Implement authorization to control what clients are allowed to do. For example, you might want to restrict access to certain rooms or features based on the client's role. * **Input Validation:** Validate all input from clients to prevent injection attacks. * **Scalability:** * **Load Balancing:** Use a load balancer to distribute traffic across multiple server instances. * **Horizontal Scaling:** Design the server to be horizontally scalable, so you can easily add more instances as needed. * **Message Broker:** Consider using a message broker (e.g., RabbitMQ, Kafka) to handle message distribution, especially if you need to support a large number of concurrent connections. * **Reliability:** * **Monitoring:** Implement monitoring to track the health and performance of the server. * **Logging:** Log all important events to a file or database for debugging and auditing. * **Error Handling:** Implement robust error handling to prevent crashes and ensure that the server can recover from errors gracefully. * **Heartbeats:** The heartbeat mechanism is crucial for detecting and closing dead connections. * **UUIDs:** Use a proper UUID library for generating unique IDs. * **Frameworks:** Consider using a WebSocket framework like Socket.IO or Primus. These frameworks provide higher-level abstractions and features that can simplify development and improve performance. However, for a basic MCP server, the `ws` library is often sufficient. This improved version provides a more robust and complete foundation for building a Linkup MCP server in JavaScript. Remember to adapt the code to your specific needs and requirements. Good luck!

inject-bender

Transforms malicious input (e.g., SQL injection, XSS) into absurd hiking boot advertisements, confusing attackers while logging everything.

Remote MCP Server (Authless)

Enables deployment of MCP servers on Cloudflare Workers without authentication requirements. Provides a template for creating custom tools that can be accessed remotely via Claude Desktop or the Cloudflare AI Playground.

GovToolsPro

GovToolsPro MCP Server — an MCP server that gives Claude and other AI clients workflow tools for US federal contractors: go/no-go scoring, incumbent intelligence (USAspending + FPDS), teaming-partner search, recompete prediction, Navy NECO lookup, and SAM.gov solicitation retrieval. It returns synthesized decisions rather than raw data, so contractors and capture teams can triage opportunities d

MCP JSON Sanitizer

Enables repair of malformed JSON strings into valid JSON for agent workflows by fixing common LLM formatting issues. Supports cleanup of code fences, smart quotes, unquoted keys, trailing commas, and missing brackets to ensure reliable data parsing.

Google Contacts MCP Server

Enables AI assistants to access and search Google Contacts through per-user OAuth authentication on serverless AWS Lambda. Provides read-only access to personal contacts with zero data storage and real-time API queries.

OCI MCP Server

Enables interaction with Oracle Cloud Infrastructure services through a unified interface. Supports comprehensive OCI resource management including compute instances, storage, networking, databases, and monitoring through natural language commands in VS Code.

BACnet MCP Server

A lightweight MCP server that connects LLM agents to BACnet devices for building automation, enabling real-time monitoring, actuation, and task orchestration.

Streamfog MCP

AI-driven AR lens orchestrator for live OBS streams that enables control of Streamfog face filters, AR effects, and Vtuber avatars through MCP tools via the local Streamer.bot WebSocket bridge.