Top 23 JavaScript model-context-protocol Projects

model-context-protocol

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1. firecrawl-mcp-server

   1 1 6,988 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

2. Puter.js

   developer.puter.com featured

   Puter.js - The Backend for AI-Generated Apps. One-shot full-stack apps with your existing AI coding tool. Puter.js gives you Auth, Storage, DB, AI & more, with up to 90% fewer AI tokens than other backend platforms.

   

3. cursor-talk-to-figma-mcp

   2 2 6,905 6.5 JavaScript

   TalkToFigma: MCP integration between AI Agent (Cursor, Claude Code, Codex) and Figma, allowing Agentic AI to communicate with Figma for reading designs and modifying them programmatically.

   

   Project mention: Speeding Up Layout from Figma with MCP and Cursor | dev.to | 2026-02-13

   MCP Cursor Talk To Figma - a bit more demanding to set up (you need to set up a local server following the instructions and run the "Cursor Talk To Figma" plugin in Figma; works even without Dev Mode access).

4. pilot-shell

   3 5 1,782 9.9 JavaScript

   How real engineers run Claude Code and Codex: spec-driven planning, enforced TDD, persistent memory, and quality enforcement on all levels. Make your agents production-ready.

   

   Project mention: Pilot Shell: Spec-driven plans; enforced quality gates; persistent knowledge | news.ycombinator.com | 2026-07-03

5. mcp-hub

   4 1 502 9.4 JavaScript

   A centralized manager for Model Context Protocol (MCP) servers with dynamic server management and monitoring

   

6. after-effects-mcp

   5 1 490 5.4 JavaScript

   MCP Server for Adobe After Effects. Enables remote control (compositions, text, shapes, solids, properties) via the Model Context Protocol using ExtendScript.

   

7. desktop

   6 5 473 8.2 JavaScript

   Agentify Desktop lets Codex/Claude/OpenCode control your logged-in ChatGPT, Claude, AiStudio, Gemini, Grok, Perplexity web sessions via MCP, parallel hidden/visible tabs, file upload + image download (by agentify-sh)

   

   Project mention: Call GPT 5.6-Sol Pro, Fable 5, SuperGrok Subscripions from Codex, Claude | news.ycombinator.com | 2026-07-16

8. MCP-Checklists

   7 2 196 9.4 JavaScript

   

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

9. SaaSHub

   www.saashub.com featured

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

   

10. agentql-mcp

    8 1 175 8.0 JavaScript

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

    

11. safari-mcp

    9 20 151 9.6 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: I filed a critical bug against my own tool. Then I read the code — and my own root cause was wrong. | dev.to | 2026-07-17

    The tool is safari-mcp, an MCP server that lets an AI agent drive the Safari you're already logged into. That premise is the whole value proposition, and it's also the whole danger: the user is using this browser at the same time as the agent. The single promise the project makes is "the agent never touches a tab it didn't open."

12. ToolsForMCPServer

    10 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.

13. Klear-Team-Brain

    11 1 100 7.5 JavaScript

    Turn your team's AI coding sessions, GitHub code, and docs into one shared, searchable memory — a self-hosted git truth store you query right from your editor over MCP.

    

    Project mention: Your team's real engineering record is the AI sessions you delete every day | dev.to | 2026-06-25

    The tool is open source, Apache-2.0, called Klear-Team-Brain. Want to see the finished state first? The repo README has the same commands you're about to run.

14. forge

    12 2 55 9.3 JavaScript

    Turn a one-line idea into a branch with tested, reviewed, committed code. The brainstorm-to-commit pipeline for Claude Code. (by LucasDuys)

    

    Project mention: I reversed Opus 4.7 costs | news.ycombinator.com | 2026-04-17

15. nse-bse-indian-stock-market-data-mcp

    13 1 51 7.8 JavaScript

    NSE BSE Indian Stock Market Data MCP server — search, screen & analyze all 8,200+ NSE/BSE stocks with 34 tools: live quotes, financials, technicals, 326-ratio screener, FII/DII flows, IPOs & portfolio tracking. Works with Claude, ChatGPT, Cursor & any MCP client | tapetide.com

    

    Project mention: I built an open-source MCP server that gives any AI assistant live NSE + BSE stock data | dev.to | 2026-06-19

    🔗 https://github.com/Tapetide-hq/nse-bse-indian-stock-market-data-mcp

16. MCPApp

    14 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

17. mcp-api-gateway

    15 1 42 4.1 JavaScript

    A universal MCP (Model Context Protocol) server to integrate any API with Claude Desktop using only Docker configurations.

    

18. real-browser-mcp

    16 1 43 8.1 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

19. mcp_ctl

    17 1 38 6.7 JavaScript

    A package manager to manage all your mcp servers across platforms (by runablehq)

    

20. bgpt-mcp

    18 1 41 7.1 JavaScript

    Scientific paper evidence search for ChatGPT, MCP, REST, Python, and AI agents.

    

    Project mention: Search Scientific Papers from Any AI Tool — Introducing BGPT MCP | dev.to | 2026-02-16

    GitHub: github.com/connerlambden/bgpt-mcp

21. src-to-kb

    19 4 37 8.2 JavaScript

    Convert source code to LLM ready knowledge base

    

    Project mention: Building a Modern AI Assistant with Vezlo: Ingestion Pipelines, Real-Time Chat UX, Slack Integration & Response Validation | dev.to | 2026-01-08

22. slack-mcp-server

    20 2 29 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

23. outlook-assistant

    21 1 26 9.1 JavaScript

    MCP server for Outlook email, calendar, and contacts — let your AI assistant manage your inbox directly from the conversation.

    

    Project mention: Dogfooding found 22 bugs my 1,548 tests missed | dev.to | 2026-03-18

    I don't manage my email through Claude Code every day. But when I need to find something specific - tax receipts scattered across inbox and sent and archived, invoices from three months ago, calendar events linked from shared calendars - that's when I pull out Outlook Assistant. Claude Code can programmatically search across every folder, collate the results, and export what I need. It turns a full afternoon of manual searching into a 10-minute conversation.

24. ThumbGate

    22 4 24 9.9 JavaScript

    ThumbGate Pre-Action Checks derive rules from repeated failures, flag risky tool calls, hard-block detected secret leaks, and block matches in strict mode.

    

    Project mention: ThumbGate 1.28.0: A Safer Path from Agent Feedback to Enforcement | dev.to | 2026-07-13

    Product site

25. TriggerApp

    23 1 24 - JavaScript

    An optimized Google Apps Script library and MCP Server to efficiently manage complex, flexible, and automated time-driven triggers with high precision.

    

    Project mention: Executing Google Apps Script on Complex Schedules using Vibe Coding | dev.to | 2026-06-02

    This structural deficiency was the core catalyst for the development of TriggerApp. By introducing a deterministic, declarative JSON engine, TriggerApp abstracted the volatile date-math layer entirely away from the developer.

26. SaaSHub

    www.saashub.com featured

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

    

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