Open-Source ListingsOpen-Source

Pubmed MCP Server

Search PubMed/Europe PMC, fetch articles and full text (PMC/EPMC/Unpaywall), citations, MeSH terms via MCP. STDIO or Streamable HTTP.

Excalidraw Architect MCP

Turn your architecture into a living, queryable knowledge graph - and render it as beautiful auto-laid-out Excalidraw diagrams. An MCP server for Cursor, Claude Code & Windsurf. Offline, no API keys.

MCP Read Website Fast

Quickly reads webpages and converts to markdown for fast, token efficient web scraping

MCP

Optional stdio bridge to Nitrosend’s remote MCP server for clients without native HTTP transport.

Agent Skills

Curated collection of AI agent skills for Hermes and other agent frameworks

Zotero MCP

Lightweight Model Context Protocol (MCP) server for the Zotero API, in Python

Arbor

Graph-native code intelligence that replaces embedding-based RAG with deterministic program understanding.

Opendocswork MCP

Rust-native MCP server for Office document processing (Excel, Word, PowerPoint). Sub-millisecond, local-first, open source.

Speckit Agent Skills

Agent skills for Spec Kit

Ynab MCP Server

Model Context Protocol for YNAB (you need a budget)

OmicsClaw

Conversational & memory-enabled AI research partner for multi-omics analysis. CLI + Desktop App (installers in Releases). From biological idea to full research paper.

Html Anything

Turn any file into a beautiful, interactive, shareable HTML — WhatsApp logs, PDFs, transcripts, code, anything.

MCP Server Calculator

A Model Context Protocol server for calculating.

Aicode Toolkit

Toolkit for Coding Agents to work reliably with repo of any size.

Qz Browser Agent

Local-first AI agent for Chrome: browser automation, web research, and data extraction with your own model.

Code Index MCP

Поиск по коду для ИИ-агентов: 32 инструмента MCP, индекс на SQLite, один бинарник без зависимостей. Разбирает выгрузки 1С:Предприятие — Конфигуратор и EDT; конфигурация на 88 тыс. файлов индексируется за 6 минут, ответ на запрос — 10 мс. Code index MCP server: tree-sitter AST for 14 languages, 20 universal tools + 12 for 1C/BSL.

Scumble

Free, open-source desktop editor for AI inpainting: select, prompt, get a colour-matched layer. FLUX 3 Image, FLUX.2, GPT Image, Nano Banana, Seedream and Qwen through your API key or your own ComfyUI. Layers, PSD export, MCP.

Wechat Devtools MCP

MCP server + Skill for WeChat DevTools — lets the AI in your editor compile, preview, debug and auto-test Mini Programs. Windows / macOS, on the official MCP Registry. 微信开发者工具 MCP & Skills

Opencode MCP

MCP server for OpenCode AI — 70 tools, 10 resources, 5 prompts. Use npx opencode-mcp with Claude Desktop, Claude Code, Cursor, Windsurf, or any MCP client.

Mnemo Cortex

Open-source cognitive coprocessor with active memory for AI agents — persistent recall, semantic search, overnight dreaming, verified facts, encrypted USB sync. MCP server; works with Claude, ChatGPT, and any local LLM. Built by one maker and his agents.

Mssql MCP

MSSQL Server MCP implementation written in C#

GEmojiSharp

:octocat: GitHub Emoji for C#, dotnet and beyond

Self Improving Agents

Self-Improving Agents -- A Progression Four levels of self-improving code agents, from the simplest loop to a full adversarial arena with self-modifying agents. Each level adds one key idea.

Turbovault

Markdown and OFM SDK w/ MCP server that transforms your Obsidian vault into an intelligent knowledge system