The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
Arc Kit
The Enterprise Architecture Governance Harness — strategy, architecture, delivery, and assurance using AI coding assistants
Install
/plugin marketplace add tractorjuice/arckit-claudeInstall command taken from the project's README or registry entry. Always review code before running it.
README excerpt
Read full README on GitHub →ArcKit: The Enterprise Architecture Governance Harness
Build better enterprise architecture through structured strategy, design, delivery, and assurance workflows.
ArcKit is a toolkit for enterprise architects that transforms architecture governance from scattered documents into a systematic, AI-assisted workflow for:
- 🏛️ Establishing and enforcing architecture principles
- 👥 Analyzing stakeholder drivers, goals, and outcomes
- 🛡️ Risk management (HM Treasury Orange Book)
- 💼 Business case justification (HM Treasury Green Book SOBC)
- 📋 Creating comprehensive requirements documents
- 🗄️ Data modeling with ERD, GDPR compliance, and data governance
- 🔬 Technology research with build vs buy analysis (web search powered)
- ☁️ Azure-specific research using Microsoft Learn MCP for authoritative documentation
- 🗺️ Strategic planning with Wardley Mapping
- 📊 Generating visual architecture diagrams (Mermaid)
- 🤝 Managing vendor RFP and selection processes
- ✅ Conducting formal design reviews (HLD/DLD)
- 🔧 ServiceNow service management design
- 🔗 Maintaining requirements traceability
- 📎 Citation traceability for external documents (inline
[DOC-CN]markers with source quotes)
ArcKit produces DRAFT artefacts for qualified people to review, not legal, regulatory, clinical, or security advice. See What ArcKit does not do.
Quick Start
Installation
Claude Code (premier experience) — install the ArcKit plugin (requires v2.1.287+):
First, make sure Claude Code is on the latest version:
claude install latest
Then in Claude Code:
/plugin marketplace add tractorjuice/arckit-claude
Then install from the Discover tab, or via CLI. The marketplace ships 17 plugins — install only the overlays you need:
# Core (76 commands — UK Government civilian + generic enterprise)
claude plugin install arckit@arckit-claude
# Core + UAE federal
claude plugin install arckit arckit-uae
# Broad overlay set (UK + UAE + FR + CA + EU + AT + AU + US + UK-NHS + UK-GCloud)
claude plugin install arckit arckit-{uae,fr,ca,eu,at,au,us,uk-nhs,uk-gcloud}
# Enterprise architecture and AI agent governance overlays
claude plugin install arckit arckit-togaf-adm arckit-agent-architecture
Similar plugs
Reverse engineer anything with agents, from app behavior down to native binaries.
Build Agentic workflows, RAG pipelines, with rich AI model and tool support on one collaborative workspace. Deploy on cloud, VPC, or self-hosted, so teams move from prototype…
User-friendly AI Interface (Supports Ollama, OpenAI API, ...)
A cross-platform desktop All-in-One assistant for Claude Code, Codex, OpenCode, OpenClaw, Grok Build & Hermes Agent. Only official website: ccswitch.io