Top 23 JavaScript mcp-server Projects

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1. browser-tools-mcp

   1 1 7,225 8.7 JavaScript

   Monitor browser logs directly from Cursor and other MCP compatible IDEs.

   

2. SaaSHub

   www.saashub.com featured

   SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

   

3. firecrawl-mcp-server

   2 1 6,503 9.0 JavaScript

   🔥 Official Firecrawl MCP Server - Adds powerful web scraping and search to Cursor, Claude and any other LLM clients.

   

   Project mention: Show HN: MCP-recorder – VCR.py for MCP servers. Record, replay, verify | news.ycombinator.com | 2026-03-06

   --target https://mcp.devhelm.io

   It works with both HTTP and stdio transports. Scenarios are defined in YAML so it works with MCP servers in any language, and there's a pytest plugin if you want tighter integration. Secret redaction and environment variable interpolation are built in.

   To make sure this actually works on real codebases, I submitted several PRs to production MCP servers: monday.com's MCP server (https://github.com/mondaycom/mcp/pull/222), Tavily's MCP server (https://github.com/tavily-ai/tavily-mcp/pull/113), and Firecrawl's MCP server (https://github.com/firecrawl/firecrawl-mcp-server/pull/175). They went from zero schema coverage to full tool surface verification with a clean schema diff available on each tool change. One big benefit is that you can do verification and replay with no API keys — deterministic responses, no live requests to real servers.

   I wrote up a deeper dive into the schema drift problem and the VCR pattern for MCP here: https://devhelm.io/blog/regression-testing-mcp-servers

4. brightdata-mcp

   3 20 2,434 9.0 JavaScript

   A powerful Model Context Protocol (MCP) server that provides an all-in-one solution for public web access.

   

   Project mention: 5 Production Stacks for Live Data Ingestion at Scale (Without Getting Blocked) | dev.to | 2026-05-19

   Repository: https://github.com/brightdata/brightdata-mcp License: MIT Free Tier: 5,000 requests/month Best for: High-complexity, moderate-volume targets (competitive pricing, job market analysis, funding data, SERP monitoring) where the hard problem is anti-bot, adaptive navigation, or frequent site changes; not throughput.

5. mcp-jetbrains

   4 1 957 3.8 JavaScript

   A model context protocol server to work with JetBrains IDEs: IntelliJ, PyCharm, WebStorm, etc. Also, works with Android Studio

   

6. cloud-run-mcp

   5 2 613 9.2 JavaScript

   MCP server to deploy apps to Cloud Run

   

   Project mention: Build Your First Remote MCP Server on Cloudflare Workers | dev.to | 2025-11-30

   Public Example Repository Deploy Google's Cloud Run MCP server from https://github.com/GoogleCloudPlatform/cloud-run-mcp, which provides tools like deploy-local-folder for app deployments. Configure in VSCode with "command": "npx", "args": ["-y", "@google-cloud/cloud-run-mcp"] after GCP auth, or connect Claude Desktop to its SSE endpoint. Test by listing services: the repo includes full setup for production use.​

7. cross-code-organizer

   6 4 335 8.7 JavaScript

   Cross-Code Organizer (formerly Claude Code Organizer): cross-harness config dashboard for Claude Code, Codex CLI, MCP servers, skills, memories, agents, sessions, security scanning, context budget, and backups.

   

   Project mention: Your Claude Code Settings Will Die With Your Machine | dev.to | 2026-04-07

   The scanner is extracted from Claude Code Organizer, so it knows exactly where to look. Not just ~/.claude/. It finds project-scoped .claude/ directories too, and decodes those hashed paths under ~/.claude/projects/.

8. tmux-mcp

   7 2 286 5.0 JavaScript

   A MCP server for our beloved terminal multiplexer tmux.

   

   Project mention: I Still Prefer MCP over Skills | news.ycombinator.com | 2026-04-09

9. MCP-Checklists

   8 2 194 9.4 JavaScript

   

   Project mention: MCP-Checklist: For production MCP deployments | news.ycombinator.com | 2025-09-05

10. agentql-mcp

    9 1 174 8.0 JavaScript

    Model Context Protocol server that integrates AgentQL's data extraction capabilities.

    

11. safari-mcp

    10 15 111 8.4 JavaScript

    Native Safari browser automation for AI agents. 80 tools via AppleScript — zero overhead, keeps logins, runs silently in background. Drop-in alternative to Chrome DevTools MCP with 40-60% less CPU/heat on Apple Silicon.

    

    Project mention: My browser tool returned "[object Promise]" as a webpage. One grep later, 10 more tools had the same bug. | dev.to | 2026-06-04

    safari-mcp is an MCP server that drives the real macOS Safari — the user's actual logged-in browser — so AI coding agents can navigate, read, fill forms, take screenshots, all 80-some tools of it. The way it talks to Safari is AppleScript's do JavaScript command. You hand AppleScript a string of JavaScript, it runs it inside the page, and gives you back the result. safari-mcp wraps that in a runJS(...) helper.

12. agent-security-scanner-mcp

    11 1 110 - JavaScript

    Security scanner MCP server for AI coding agents. Prompt injection firewall, package hallucination detection (4.3M+ packages), 1000+ vulnerability rules with AST & taint analysis, auto-fix.

    

    Project mention: Open Source Appsec Scanner | news.ycombinator.com | 2026-06-03

13. ToolsForMCPServer

    12 1 106 8.9 JavaScript

    The Gemini CLI confirmed that the MCP server built with Google Apps Script (GAS), a low-code platform, offers immense possibilities. If you've created snippets for GAS, these could be revitalized and/or leveraged in new ways by using them as the MCP server. The Gemini CLI and other MCP clients will be useful in achieving this.

    

    Project mention: Building Next-Gen AI Agents for Google Workspace: MCP, A2A, and A2UI with Google Apps Script | dev.to | 2026-01-09

    Alternatively, you can manually copy the scripts from the GitHub Repository. This example uses a2a-server/sample2/a2a-server.js, which integrates 160 tools from ToolsForMCPServer.

14. houtini-lm

    13 2 92 9.0 JavaScript

    MCP server that saves Claude Code tokens by delegating bounded tasks to local or cloud LLMs. Works with LM Studio, Ollama, vLLM, DeepSeek, Groq, Cerebras.

    

    Project mention: Making a Local LLM MCP Server Deterministic: Model Routing, Think-Block Stripping, and the Problems Nobody Warns You About | dev.to | 2026-03-17

    The MCP server is houtini-lm. It sits between Claude Code and whatever OpenAI-compatible endpoint you've got running - LM Studio, Ollama, vLLM, cloud APIs, whatever speaks /v1/chat/completions. Claude keeps on top of the reasoning. The cheap(er) model handles the outputs.

15. mcp-server-llamacloud

    14 1 87 3.3 JavaScript

    A MCP server connecting to managed indexes on LlamaCloud

    

    Project mention: Meta Llama MCP Servers — AI Agents for Llama 4, Ollama, and the Open-Weight LLM Ecosystem | dev.to | 2026-03-25

    GitHub: run-llama/mcp-server-llamacloud — 86 stars, 19 forks

16. cursor10x-mcp

    15 1 79 6.8 JavaScript

    The Cursor10x MCP is a persistent multi-dimensional memory system for Cursor that enhances AI assistants with conversation context, project history, and code relationships across sessions.

    

17. ai-software-architect

    16 1 66 7.7 JavaScript

    AI-powered architecture documentation framework with ADRs, reviews, and pragmatic mode. Now available as Claude Code Plugin for easiest installation.

    

18. puremd-mcp

    17 8 59 5.3 JavaScript

    Unblock, scrape, and search tools for MCP clients

    

    Project mention: puremd-mcp VS llm-codes - a user suggested alternative | libhunt.com/r/puremd-mcp | 2025-08-31

19. MCPApp

    18 1 47 - JavaScript

    This text introduces the Model Context Protocol (MCP) for AI interaction, exploring Google Apps Script (GAS) as a server option. It shows feasibility with a sample but notes the lack of a GAS SDK, aiming to encourage understanding and development.

    

    Project mention: Agent Development Kit for Google Apps Script | dev.to | 2026-05-18

    GitHub: MCPApp

20. mcp-server

    19 7 43 9.3 JavaScript

    A generic, modular server for implementing the Model Context Protocol (MCP). (by profullstack)

    

    Project mention: MCP: An (Accidentally) Universal Plugin System | news.ycombinator.com | 2025-08-10

    checkout my MCP server platform: https://github.com/profullstack/mcp-server

    I built it and have added several modules, but I'm always looking for people to add more modules. See ./mcp_modules in the root folder.

21. deliberation

    20 1 41 - JavaScript

    Ask Codex, Gemini/Antigravity, Grok (xAI), and 400+ more models through OpenRouter including Qwen, Kimi, DeepSeek for second opinions or arbiter-mediated consensus inside Claude Code.

    

    Project mention: Meet Deliberation: 400+ models is easy, knowing which ones earn a place is hard. | dev.to | 2026-06-03

    Deliberation is open source, it works in the agent you already use, and most of the models are ones you already pay for. It ships in the agent-plugins marketplace and as a standalone MCP server on npm (@antonbabenko/deliberation-mcp). Source, and a star button I would genuinely appreciate, are at github.com/antonbabenko/deliberation. Install it, point GPT and Claude at each other, and let me know where it breaks. The cheapest review still happens before you execute - just make sure every reviewer in the room is worth the wait and the cost.

22. flowbite-mcp

    21 2 36 8.5 JavaScript

    Convert Figma design to code with the official Flowbite MCP server

    

    Project mention: Show HN: Convert Figma designs to Tailwind CSS with MCP [MIT License] | news.ycombinator.com | 2025-12-11

23. real-browser-mcp

    22 1 28 7.9 JavaScript

    MCP server + Chrome extension that gives AI agents control of your real browser with existing sessions and logins

    

    Project mention: Show HN: Real Browser MCP – your AI agent can see your real browser | news.ycombinator.com | 2026-03-09

    MCP server + Chrome extension. Your agent controls your REAL browser (same tabs, cookies, logins). No headless browser, no replaying auth. One-click install in Cursor, extension on Chrome Web Store.

    Repo: https://github.com/ofershap/real-browser-mcp

24. slack-mcp-server

    23 2 26 9.5 JavaScript

    Session-based Slack MCP for Claude and MCP clients: local-first workflows, secure-default HTTP. (by jtalk22)

    

    Project mention: Show HN: Slack MCP Server v2.0.0 (deterministic Slack MCP diagnostics) | news.ycombinator.com | 2026-02-26

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• A note from our sponsor - SaaSHub
  www.saashub.com | 11 Jun 2026

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