What is ArcKit?
ArcKit is one governance harness that wraps your AI coding assistant: it gates, traces, and provenance-stamps everything the assistant produces. From stakeholder analysis and risk registers to design reviews and traceability matrices, every artifact is template-driven and audit-ready. A UK Government baseline ships alongside community-contributed jurisdiction and sector overlays (EU, France, Austria, Canada, UAE, Australia, USA, UK Finance, UK NHS).
Systematic
Follow GDS Agile Delivery phases with a structured command workflow. Every artifact is version-controlled, traceable, and linked to business drivers.
Multi-Jurisdiction
UK Government core (TCoP, Secure by Design, GDS Service Standard, MOD JSP 936, HM Treasury Green/Orange Books) with community overlays for GDPR, AI Act, NIS2, ANSSI, PDPL, and more.
AI-Assisted
Works with Claude Code, Gemini CLI, Codex CLI, OpenCode CLI, and GitHub Copilot. AI generates first drafts from templates; architects review and refine.
How it fits together
Your AI coding assistant sits at the bottom. Every tool call is intercepted by The Enterprise Governance Harness — gates block unsafe writes, the core engine drives generation, sector overlays and live MCP knowledge compose in, and observers stamp provenance and traceability. What comes out the top are governed, audit-ready artifacts.
How it works
ArcKit follows the UK Government's GDS Agile Delivery framework, with commands mapped to each phase:
Planning
Planning
Define architecture principles and create your project structure.
Discovery
Identify stakeholders, assess risks, and build the strategic outline business case.
Alpha
Gather requirements, model data, research technology options, and map strategy.
Beta
Procure services, evaluate vendors, review designs, and generate the delivery backlog.
Live
Verify traceability, ensure operational readiness, and tell the project story.
Jurisdictions covered
ArcKit ships a UK Government baseline alongside seven community-contributed jurisdictional overlays. Use the command reference to filter by jurisdiction or tier — every overlay command is badged [COMMUNITY] and excluded from the official-tier count.
GDS Service Standard, Technology Code of Practice, Secure by Design, MOD JSP 936, HM Treasury Green & Orange Books, G-Cloud and DOS procurement, AI Playbook, ATRS.
Jurisdiction-agnostic foundations: requirements, ADRs, Wardley Mapping, DevOps / MLOps / FinOps, traceability, conformance, vendor evaluation.
GDPR, EU AI Act, NIS2, DORA, Cyber Resilience Act, Digital Services Act, Data Act.
ANSSI Guide d'hygiène, SecNumCloud 3.2, EBIOS Risk Manager, DINUM (RGI / RGAA / RGS / RGESN), CNIL RGPD, Diffusion Restreinte, code de la commande publique.
NISG (NIS2 transposition), DSG / DSGVO, Bundesvergabegesetz 2018 procurement.
FITAA (C-70), PIA, ATIP, Algorithmic Impact Assessment, Charter, SOIA, GC Digital Standards, cloud residency, Official Languages Act, OCAP, PSPC procurement.
PDPL, IAS controls, sovereign cloud residency, UAE Pass integration, Smart Data classification, AI Charter, autonomy tier, federal procurement, digital records.
ASD Essential Eight, Information Security Manual, DTA Digital Service Standard, Privacy Act 1988 PIA, OAIC Notifiable Data Breach playbook, Protective Security Policy Framework, DTA AI Assurance, DISP supplier attestation.
FedRAMP authorization, FISMA / NIST 800-53 Rev 5, CISA Zero Trust Maturity, OMB M-19-17 ICAM, NIST AI RMF, OMB M-24-10/M-25-21 AI assurance, E-Gov §208 PIA, EO 14028 SBOM. Install: claude plugin install arckit arckit-us.
PSD2 SCA-RTS exemption design (Articles 10, 10A, 11, 13-18 PSRs 2017), EMI / PI safeguarding assessment (EMR 2011, PSRs 2017, FCA PS24/9), FCA Consumer Duty board report (PS22/9), Critical Third Parties dependency assessment (PS24/16). v1 audience: architects at established UK PSPs / EMIs / PIs scaling regulated operations.
NHS DCB0129 (manufacturer) and DCB0160 (deployer) Clinical Safety Case + Hazard Log (Marcus Baw SAFETY.md spec), NHS DTAC v3, UK MDR 2002 + EU MDR 2017/745 software-as-medical-device (SaMD / AIaMD) classification.
Government Code Discovery
Search 24,500+ UK government repositories before building from scratch. Powered by govreposcrape, no API key required.
gov-code-search
Natural language search across government repositories. Find how other departments solved similar problems.
gov-reuse
Systematic reusability assessment. Score candidates on licence, quality, documentation, tech stack, and maintenance.
gov-landscape
Map the government code landscape for a domain. Identify who built what, common patterns, and collaboration opportunities.
Supports TCoP Point 3 ("Be open and use open source") and the CDDO "reuse before build" principle. Existing research commands now include a government reuse check as a fifth build-vs-buy option.
Works with your AI
Every core command and community overlay produces identical outputs across AI systems. Choose the platform that fits your workflow.
Claude Code
PremierFull experience with agents, hooks, MCP servers, and output validation.
/plugin marketplace add tractorjuice/arc-kit
Gemini CLI
FullNative extension with all commands, templates, scripts, and MCP servers.
gemini extensions install tractorjuice/arckit-gemini
OpenAI Codex CLI
CoreCommands and templates copied into your project via CLI.
arckit init my-project --ai codex
OpenCode CLI
CoreCommands and templates with flexible model selection.
arckit init my-project --ai opencode
GitHub Copilot
CorePrompt files and agents for VS Code Copilot Chat.
arckit init my-project --ai copilot
Latest writing
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Explore
AI Commands
Browse every command across the official baseline plus community jurisdictional overlay categories. Filter by jurisdiction, tier, status, or category.
Guides
A usage guide for every command across 6 jurisdictions plus topical guides on discovery, planning, architecture, governance, compliance, and operations.
Role Guides
18 guides mapped to the DDaT Capability Framework for architects, CTOs, product managers, and more.
Example Projects
AI-generated architecture documentation from 44 public test projects spanning health, AI, cloud, and data.
Ready to get started?
Set up ArcKit in 5 minutes and generate your first architecture artifact.
Getting started guide