Specification and documentation for the Model Context Protocol

Agent skill for producing threat models for open-source projects

Model Context Protocol Servers

The official Rust SDK for the Model Context Protocol

The official Python SDK for Model Context Protocol servers and clients

The official TypeScript SDK for Model Context Protocol servers and clients

The official C# SDK for Model Context Protocol servers and clients. Maintained in collaboration with Microsoft.

The official Go SDK for Model Context Protocol servers and clients. Maintained in collaboration with Google.

The official PHP SDK for Model Context Protocol servers and clients. Maintained in collaboration with The PHP Foundation.

Visual testing tool for MCP servers

Nexent is a zero-code platform for auto-generating production-grade AI agents using Harness Engineering principles — unified tools, skills, memory, and orchestration with built-in constraints, feedback loops, and control planes.

Structurizr is a "models as code" tool designed for the C4 model.

Model Context Protocol (MCP) Server to connect your AI with any MediaWiki

OpenZIM MCP is a modern, secure, and high-performance MCP (Model Context Protocol) server that enables AI models to access and search ZIM format knowledge bases offline.

A Model Context Protocol (MCP) Server for https://joplinapp.org/ that enables note access through the https://modelcontextprotocol.io. Perfect for integration with AI assistants like Claude.

Plane's Official Model Context Protocol Server 🔌 ⌨️ 🔥

Threat modeling and AI-reasoning vulnerability detection harness for Claude Code — STRIDE + AI + MAESTRO

Agent skill that rewrites rough prompts into polished, model-specific prompts — grounded in the official Anthropic prompting guides

A Model Context Protocol (MCP) server for Zammad integration, enabling AI assistants to interact with tickets, users, and organizations.

A Model Context Protocol server for converting almost anything to Markdown

A MCP (Model Context Protocol) server for interacting with dbt.

Model Context Protocol (MCP) server for the Webflow Data API.

Agentic, long-horizon visual generation: a fuzzy story → a cross-model-audited image-based movie. Brings ARIS's research-wiki + multi-agent debate to multimodal generation (intelligence lives in the agent; the diffusion model just renders). Image-based today, video next.

Agent Skill that silently refines prompts for the currently running model