Dev Tools
| Server | Language | Stars | Downloads |
|---|---|---|---|
| io.speedvault/mcp Run web performance audits, get code-level fixes, crawl for SEO, and read real-user Core Web Vitals. | TypeScript | - | - |
| io.weavz/weavz Governed app access for AI agents: 1,000+ apps & 12,000+ tools via Code Mode MCP. | — | - | - |
| io.wordlift/mcp-server Knowledge Graph, GraphQL, GS1 Digital Link and SEO tools for semantic content optimization. | — | - | - |
| IOX Cloud Deploy MCP servers and AI agents in seconds. AI generates code, deploy globally. | — | - | - |
| @ironbee-ai/devtools MCP Server and CLI for IronBee DevTools | TypeScript | - | - |
| @jakobjoachim/gitlab-mr-mcp-client MCP server for GitLab MR discussions | TypeScript | - | - |
| Java JDWP Debugger Gives AI agents full Java debugger control via JDWP with 40 tools for breakpoints, expression evaluation, and value mutation. | — | 13 | - |
| JavaScript Sandbox Provides a secure JavaScript sandbox for executing code with configurable time and memory limits, enabling safe testing and evaluation of algorithms. | TypeScript | 5 | - |
| JDI Debugger Connects to running Java applications via JDWP for real-time debugging with breakpoint management, variable inspection, step execution control, and stack trace analysis. | — | 27 | - |
| Jenkins Go Go-based MCP server for Jenkins automation with 30+ tools for console logs, pipeline inspection, build comparison, and test reports. | — | 4 | - |
| jesseverse digitalizing my life for fun | TypeScript | 0 | - |
| JetBrains IDE WebSocket Monitor JetBrains MCP Server fork that broadcasts real-time WebSocket monitoring of all tool calls between clients and IDEs for debugging and extending integration functionality. | TypeScript | 1 | - |
| Jinero AI-agent design tools: fonts, font recognition, palettes, color naming, contrast, code, SVG, CSS. | — | - | - |
| jlab-mcp-server MCP server for JupyterLab — file ops, kernel management, and code execution | TypeScript | - | - |
| @jolter/mcp-server Official Model Context Protocol (MCP) Server for Jolter runtime and toolchain manager | TypeScript | - | - |
| @jonyoder/code-index-mcp MCP server for semantic code search using vector embeddings | TypeScript | - | - |
| @joycode-ide/resources-mcp MCP server for AI resources management | TypeScript | - | - |
| @jpisnice/shadcn-ui-mcp-server A Model Context Protocol (MCP) server for shadcn/ui components, providing AI assistants with access to component source code, demos, blocks, and metadata. | TypeScript | 3.0k | - |
| @jpstone/spec-guard Spec-first, behavior-tested, agent-safe methodology, workflow runner, and MCP server. | TypeScript | - | - |
| jsdesign-mcp-server MCP server that bridges Instant Design (js.design) plugin to Cursor/Claude for design-to-code | TypeScript | - | - |
| js-reverse-mcp JS reverse engineering MCP server with agent-first tool design and built-in anti-detection. 为 AI Agent 设计的 JS 逆向 MCP Server，内置反检测。 | TypeScript | 2.8k | - |
| @jununfly/zj-loop-mcp-server MCP server for zagenticloop — exposes patterns, skills, route table, state, and audit tools as runtime-queryable resources for AI agents | TypeScript | - | - |
| jupyter-code-executor-mcp-server Jupyter code executor mcp server | Python | - | - |
| Jupyter Notebook Bridge Provides a bridge between Jupyter notebooks and AI systems, enabling code execution, markdown creation, and Earth data interaction through specialized tools and kernel manipulation. | — | 0 | - |
| @just-every/mcp-deep-search MCP server for deep web search using @just-every/search | TypeScript | - | - |