Raven MCP

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.

What it does

Raven gives Claude access to a comprehensive design knowledge base:

• Principles — Nielsen's 10 Heuristics, all 21 Laws of UX, Gestalt principles, WCAG accessibility, typography rules, color theory, mobile UX, D4D framework, UX writing, service design, and brand
• Patterns — Proven UI patterns for signup flows, pricing pages, navigation, forms, landing pages, dashboards, modals, empty/error/loading states, CTAs, social proof, mobile conversion — plus content patterns (error messages, empty-state copy, notifications, form validation) and service patterns (service blueprinting, human handoff, signup-as-service, omnichannel continuity, moments of truth)
• Content systems — Voice & tone guides from real brands: Mailchimp, GOV.UK, Shopify Polaris, Atlassian, and Intuit
• Research — Qualitative, quantitative, and usability methods with do/don't protocols and checklists. Metrics frameworks: HEART, AARRR/Pirate, North Star Metric, conversion funnel, RICE, OKRs.
• Service design — Service blueprinting (with HTML blueprint generation — current vs. ideal state), human-handoff patterns, signup-as-service, omnichannel continuity, moments of truth / recovery, and the GOV.UK Service Standard
• Brand & visual — Logo usage (clear space, min sizes, variants, placement, restraint), gradient usage (hierarchy, palette, contrast, trend vs signature), imagery (consistency, representation, purpose), visual hierarchy, brand-as-system, and current (2026) visual-design trends
• Business — Monetization models, retention strategies, onboarding optimization, growth mechanics, and product metrics frameworks
• Tokens — Design system tokens for Stripe, Linear, and more

Install

Claude Code — one command

claude mcp add raven -- npx -y raven-mcp

Manual config (Claude Desktop or team .mcp.json)

{
  "mcpServers": {
    "raven": {
      "command": "npx",
      "args": ["-y", "raven-mcp"]
    }
  }
}

Claude Desktop — one-click extension

Prefer not to edit JSON? Download raven.mcpb and double-click it. Claude Desktop installs Raven automatically — no Node, no terminal.

From source

git clone https://github.com/rhinocap/raven-mcp.git
cd raven-mcp && npm install && npm run build

Tools

... View full README on GitHub