Top 23 mcp-server Open-Source Projects

1. n8n

   1 454 191,300 10.0 TypeScript

   n8n is a workflow automation platform for building AI-powered workflows and agents, connecting any AI model to any business system with full control over data, security, and deployment. Build visually or in code while n8n handles infrastructure from prototype to production with fully auditable executions.

   

   Project mention: SOC-in-a-Box: One LLM, Eight Hats, A Production-Bar AI SOC on a Single GPU | dev.to | 2026-06-06

   n8n and similar visual workflow tools were on the list for one specific reason: leadership likes seeing the boxes-and-arrows. But the LLM nodes aren't first-class — you'd be wrapping every model call in HTTP, and the graph is in a database, not in code that's reviewable in a PR. Auditability and reproducibility are both worse than the LangGraph + bus path. (n8n is a great fit for non-LLM SOAR-style automations, just not for this.)

2. SaaSHub

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

   

3. Scrapling

   2 9 60,673 9.8 Python

   🕷️ An adaptive Web Scraping framework that handles everything from a single request to a full-scale crawl!

   

   Project mention: I Tested Every Web Scraping Tool Against Lazada — Here's What Actually Works (May 2026) | dev.to | 2026-05-29

   I came across Scrapling through a recommendation on X and decided to put it through its paces — not against a demo page, but against Lazada Singapore, a production site with Google reCAPTCHA and a custom slider verification. The setup: a single 4GB VPS, no residential proxies, no credits, just open-source tools.

4. TrendRadar

   3 1 58,992 9.3 Python

   ⭐AI-driven public opinion & trend monitor with multi-platform aggregation, RSS, and smart alerts.🎯 告别信息过载，你的 AI 舆情监控助手与热点筛选工具！聚合多平台热点 + RSS 订阅，支持关键词精准筛选。AI 智能筛选新闻 + AI 翻译 + AI 分析简报直推手机，也支持接入 MCP 架构，赋能 AI 自然语言对话分析、情感洞察与趋势预测等。支持 Docker ，数据本地/云端自持。集成微信/飞书/钉钉/Telegram/邮件/ntfy/bark/slack 等渠道智能推送。

   

   Project mention: Daily AI & Automation Tech News - November 20, 2025 | dev.to | 2025-11-19

   Link: https://github.com/sansan0/TrendRadar

5. context7

   4 44 56,764 9.7 TypeScript

   Context7 Platform -- Up-to-date code documentation for LLMs and AI code editors

   

   Project mention: I got tired of copy-pasting GitHub issues into AI chats. So I fixed it. | dev.to | 2026-04-10

   What really inspired this was Context7. Watching it fetch fresh docs as a subagent made something click:

6. chrome-devtools-mcp

   5 17 42,973 9.8 TypeScript

   Chrome DevTools for coding agents

   

   Project mention: WebMCP Is the Quiet Google I/O Announcement That Could Make Web Apps Agent-Ready | dev.to | 2026-05-24

   That sounds small until you compare it with the tool that exists today: Chrome DevTools MCP, Google's official MCP server that lets coding agents control and inspect Chrome through DevTools.

7. UI-TARS-desktop

   6 6 36,101 9.7 TypeScript

   The Open-Source Multimodal AI Agent Stack: Connecting Cutting-Edge AI Models and Agent Infra

   

   Project mention: ByteDance local agent is something I might feel safe running | news.ycombinator.com | 2026-01-08

8. github-mcp-server

   7 34 30,482 9.8 Go

   GitHub's official MCP Server

   

   Project mention: Building AI Agents in Python | dev.to | 2026-06-04

   GitHub MCP

9. gpt-researcher

   8 8 27,505 9.4 Python

   An autonomous agent that conducts deep research on any data using any LLM providers

   

   Project mention: 1500 Lines of Markdown vs 15000 Lines of Python. | dev.to | 2025-12-31

   I spent a weekend studying GPT-Researcher, an open-source project with 24,000+ GitHub stars. It builds an autonomous research agent that generates comprehensive reports with citations. The architecture is elegant: multiple specialized agents coordinate through LangGraph, parallel execution speeds up research, and quality gates ensure reliable output.

10. serena

    9 17 24,975 9.9 Python

    A powerful MCP toolkit for coding, providing semantic retrieval and editing capabilities - the IDE for your agent

    

    Project mention: Ask HN: SoTA of Context Building Methods | news.ycombinator.com | 2026-04-06

    You should add Serena https://github.com/oraios/serena to your list.

    Serena gives you symbol-level navigation, reading, and editing via tree-sitter. So you're already getting much of what CoderLM offers — plus Serena has editing capabilities(replace symbol body, insert before/after symbol, rename). GitNexus goes further with the graph/impact analysis layer on top.

    I personally use Serena and GitNexus.

    The case for using both

      - GitNexus tells you what to change (impact analysis, dependency maps, blast radius)

11. activepieces

    10 42 22,571 10.0 TypeScript

    AI Agents & MCPs & AI Workflow Automation • (~400 MCP servers for AI agents) • AI Automation / AI Agent with MCPs • AI Workflows & AI Agents • MCPs for AI Agents

    

    Project mention: The AI Harness: why your AI coding agent is only as smart as the repo you put it in | dev.to | 2026-05-01

    Hi. I am an engineer at Activepieces, an open source automation platform (think Zapier, but you can self host it and read the source code). I write TypeScript for a living. I argue with bots about tabs vs spaces now. And our team spent the last few months really, really invested in one question:

12. n8n-mcp

    11 3 21,490 9.8 TypeScript

    A MCP for Claude Desktop / Claude Code / Windsurf / Cursor to build n8n workflows for you

    

    Project mention: N8n-MCP: AI assistants can now search and build n8n workflows | news.ycombinator.com | 2026-05-16

13. mcp-for-beginners

    12 2 16,297 9.9 Jupyter Notebook

    This open-source curriculum introduces the fundamentals of Model Context Protocol (MCP) through real-world, cross-language examples in .NET, Java, TypeScript, JavaScript, Rust and Python. Designed for developers, it focuses on practical techniques for building modular, scalable, and secure AI workflows from session setup to service orchestration.

    

    Project mention: Host Your Node.js MCP Server on Azure Functions in 3 Simple Steps | dev.to | 2025-12-09

    🚨 Free course alert! If you're new to MCP, check out the MCP for Beginners course to get up to speed quickly.

14. trigger.dev

    13 27 15,230 9.9 TypeScript

    Trigger.dev – build and deploy fully‑managed AI agents and workflows

    

    Project mention: I shipped a fix. The PR got closed. And that’s exactly how open source works sometimes 🙂 | dev.to | 2026-02-07

    PR for context: https://github.com/triggerdotdev/trigger.dev/pull/3014

15. OpenMetadata

    14 31 14,124 10.0 TypeScript

    The Open Context Layer for Data and AI , OpenMetadata is the open platform for building trusted data context and business semantics for humans, AI assistants, and agents.

    

    Project mention: Show HN: Marmot – Single-binary data catalog (no Kafka, no Elasticsearch) | news.ycombinator.com | 2025-12-02

    Great to see Marmot here and I'm a huge fan of your project. Recently, we deployed a catalog but we went with open-metadata https://open-metadata.org/ another amazing project.

    What we missed on marmot was existing integrations with Airflow and other plugins like Tableau, PowerBI etc. We're an enterprise and needed a more mature product. Fingers crossed marmot reaches there soon.

16. Skill_Seekers

    15 2 13,941 9.9 Python

    Convert documentation websites, GitHub repositories, and PDFs into Claude AI skills with automatic conflict detection

    

    Project mention: Turn Docs, Code and PDFs into Claude AI Skills in Minutes | news.ycombinator.com | 2025-11-07

17. fastapi_mcp

    16 14 11,895 9.2 Python

    Expose your FastAPI endpoints as Model Context Protocol (MCP) tools, with Auth!

    

    Project mention: The current MCP ecosystem for enterprises | dev.to | 2025-08-13

    FastAPI MCP - Expose your FastAPI endpoints as MCP tools with auth. 🆓 🔑

18. ida-pro-mcp

    17 2 9,129 9.3 Python

    AI-powered reverse engineering assistant that bridges IDA Pro with language models through MCP.

    

    Project mention: Duke Nukem: Zero Hour N64 ROM Reverse-Engineering Project Hits 100% | news.ycombinator.com | 2025-10-19

    I use the following IDA pro MCP plugin for this: https://github.com/mrexodia/ida-pro-mcp

19. mcp

    18 20 9,106 9.9 Python

    Open source MCP Servers for AWS

    

    Project mention: Infrastructure as Code MCP Servers — Terraform, Pulumi, AWS, OpenTofu, Spacelift | dev.to | 2026-03-25

    Part of awslabs/mcp (8,500 stars monorepo). The only IaC MCP server that validates templates — cfn-lint for syntax, cfn-guard for compliance, CloudTrail troubleshooting for stack failures. CDK support across 5 languages. AWS-only — no multi-cloud.

20. browser-tools-mcp

    19 1 7,225 8.7 JavaScript

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

    

21. firecrawl-mcp-server

    20 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

22. mcp

    21 8 6,384 5.2 TypeScript

    Browser MCP is a Model Context Provider (MCP) server that allows AI applications to control your browser (by BrowserMCP)

    

    Project mention: Creating an Automated UI Test of Your Web App in Seconds, with Gemini CLI and BrowserMCP | dev.to | 2026-01-14

    Jack Wotherspoon had shared his most recent weekly bulletin describing the latest advancements in Gemini CLI. He mentioned “Multi-Modal MCP Tool Responses” as one of the new features, meaning that Gemini CLI can now interpret and act on MCP responses of various modalities, not just text. He happened to mention BrowserMCP which I’ve never before looked at.

23. klavis

    22 13 5,747 9.8 Python

    Klavis AI: MCP integration platforms that let AI agents use tools reliably at any scale

    

    Project mention: Workday to Acquire Pipedream | news.ycombinator.com | 2025-11-20

    Try https://www.klavis.ai, which is a open source MCP integration platform.

24. osaurus

    23 2 5,564 9.9 Swift

    Own your AI. The native macOS harness for AI agents -- any model, persistent memory, autonomous execution, cryptographic identity. Built in Swift. Fully offline. Open source.

    

    Project mention: Local LLM by Ente | news.ycombinator.com | 2026-03-25

    I've been having fun with this one https://github.com/osaurus-ai/osaurus

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• A note from our sponsor - SaaSHub
  www.saashub.com | 7 Jun 2026

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