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Design intelligence for AI-generated UI — principles, patterns, content, brand, design tokens.
Design intelligence for AI-generated UI — principles, patterns, content, brand, design tokens.
Raven MCP is a well-structured design knowledge server with comprehensive principles, patterns, and token generation capabilities. The codebase is clean with proper input validation, no apparent malicious patterns, and appropriate permission scoping for its use case. Minor code quality observations around error handling and logging exist but do not impact security. Supply chain analysis found 4 known vulnerabilities in dependencies (0 critical, 3 high severity). Package verification found 1 issue.
3 files analyzed · 9 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
This plugin requests these system permissions. Most are normal for its category.
Add this to your MCP configuration file:
{
"mcpServers": {
"ai-ravenmcp-raven-mcp": {
"args": [
"-y",
"raven-mcp"
],
"command": "npx"
}
}
}From the project's GitHub README.
Odin's ravens brought back knowledge of the world — Raven brings back design intelligence.
A design knowledge MCP server that Claude can query when generating UI. Eight layers: principles, patterns, content design systems, research methods, service design, brand/visual, business strategy, and design tokens.
Raven gives Claude access to a comprehensive design knowledge base:
claude mcp add raven -- npx -y raven-mcp
.mcp.json){
"mcpServers": {
"raven": {
"command": "npx",
"args": ["-y", "raven-mcp"]
}
}
}
Prefer not to edit JSON? Download raven.mcpb and double-click it. Claude Desktop installs Raven automatically — no Node, no terminal.
git clone https://github.com/rhinocap/raven-mcp.git
cd raven-mcp && npm install && npm run build
| Tool | Description |
|---|---|
get_principles | Get design principles relevant to a UI context |
get_pattern | Get proven patterns for a specific UI type |
get_business_strategy | Get business/monetization strategies |
evaluate_design | Evaluate a design description against principles |
search_knowledge | Search across all principles, patterns, and strategies |
get_checklist | Get a pre-publish checklist for a UI type |
get_d4d_framework | Get Design for Delight framework templates |
list_design_systems | Browse available design systems |
get_design_system | Get tokens for a specific design system |
compose_system | Mix tokens from different systems |
get_brand_system | Get a full system styled like a well-known brand |
audit_page | Audit HTML/CSS against Raven's quality standards |
audit_layout | Evaluate visual rhythm, alignment, and optical balance |
generate_design_system | Generate a custom design system from a brand color |
list_content_systems | Browse brand voice & tone systems (Mailchimp, GOV.UK, Shopify Polaris, Atlassian, Intuit) |
get_content_system | Get a brand's voice attributes, tone shifts, vocabulary, grammar, and content patterns |
get_content_principles | Get UX-writing principles — clarity, active voice, error anatomy, inclusive language |
get_content_pattern | Get copy recipes for error messages, empty-state copy, notifications, form validation |
get_research_method | Get qualitative, quantitative, or usability research methods with protocols and checklists |
get_metrics_framework | Get a product-metrics framework — HEART, AARRR, North Star, conversion funnel, RICE, OKRs |
get_service_pattern | Get a service design pattern — blueprinting, human handoff, signup-as-service, omnichannel, moments of truth |
get_service_standard | Get the GOV.UK Service Standard — 14 points for evaluating service quality |
generate_service_blueprint | Render a service blueprint as HTML — current state, or current vs. ideal side-by-side |
get_brand_principles | Get brand/visual principles — logo, gradient, imagery, hierarchy, brand-as-system |
get_brand_trends | Get current (2026) brand and visual-design trends with usage guidance |
raven_reflect | Summarize your local Raven usage log to find patterns + gaps |
Raven ships new principles, patterns, and brand systems regularly. For one email per minor/major release (patches stay quiet):
raven_register and you're in.No marketing, unsubscribe anytime. Powered by Resend.
Raven keeps a small local-only log of how you use it so you (and Claude) can spot which patterns you build most often and which gaps show up again and again.
~/.raven/usage.jsonl (override with RAVEN_USAGE_LOG=/path).type, brand company name, search layer. Never the HTML you audit, never prompt text, never brand copy.RAVEN_NO_USAGE_LOG=1.raven_reflect, which reads the log locally and summarizes the last N days — most-used tools, recurring audit warnings (likely knowledge gaps), patterns you request most, design systems you reach for.Nothing is sent to a remote server. If a recurring gap is worth turning into a new Raven principle or pattern, you file an issue by hand — the automated pipeline at github.com/rhinocap/raven-mcp handles it from there.
npm run dev # Run with tsx (hot reload)
npm run build # Compile TypeScript
npm start # Run compiled output
All knowledge lives in src/data/ as static JSON files:
src/data/
principles/ # Nielsen, Laws of UX, Gestalt, accessibility, typography, color, mobile, D4D
patterns/ # signup, pricing, nav, forms, landing, dashboard, modals, empty/error/loading, CTA, social proof, mobile
business/ # monetization, retention, onboarding, growth, metrics
tokens/ # registry.json + systems/ (stripe, linear, vercel, …)
content/ # voice & tone: Mailchimp, GOV.UK, Shopify Polaris, Atlassian, Intuit
systems/ # registry.json + brand-voice JSONs
principles/ # UX-writing principles (clarity, active voice, error anatomy, …)
patterns/ # copy recipes for errors, empty states, notifications, form validation
research/ # study protocols + metrics frameworks
principles/ # research fundamentals (method match, bias, sample size, ethics, triangulation, …)
methods/ # qualitative, quantitative, usability
frameworks/ # HEART, AARRR, North Star, conversion funnel, RICE, OKRs
service-design/ # service-level principles + patterns + frameworks
principles/ # Stickdorn, Shostack, peak-end, moments of truth, handoff
patterns/ # service blueprinting, human handoff, signup-as-service, omnichannel, moments of truth
frameworks/ # GOV.UK Service Standard (14 points)
brand/ # brand & visual design
principles/ # logo, gradient, imagery, hierarchy, brand-as-system
trends/ # 2026-current.json
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