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raven-mcp

Design intelligence for coding agents: audits, design systems, and a taste profile agents consult.

Tools 45
GitHub stars
Installs / wk 696
Licence
Transport streamable-http, stdio
Last checked 20h ago

Tools & capabilities

45 tools

Read from the running server on 20h ago.

audit_consistency read-only pages*hero_tokencontainer_token
Audit multiple pages for cross-page consistency of content-container width and hero heading tier. Pass ≥2 pages ({name, html}) collected from different routes on the same site. Inf…
audit_content read-only goalsitems*system
Evaluate an array of content items (headings, prose, CTAs, labels, captions, metrics, outcomes) against UX-writing principles and deterministic heuristics. Returns a per-item verdi…
audit_contrast read-only urlscreenshotdom_snapshot
Compute WCAG contrast ratios for every text element on a rendered page (pass url) or from a supplied dom_snapshot. Reports AA (4.5:1 normal, 3:1 large) and AAA pass/fail and surfac…
audit_ios_a11y read-only optionselements*viewport*
Score an accessibility-enriched iOS element snapshot — missing accessibilityLabel/value/traits, sub-44pt tap targets, per-text WCAG contrast, Dynamic Type clipping, and VoiceOver r…
audit_ios_privacy read-only sourceapp_jsoninfo_plistprivacy_mdentitlements
Audit an iOS or React Native/Expo app's privacy posture for App Review and user trust. Reads a native Info.plist XML OR an Expo app.json (managed Expo apps have no Info.plist) — pl…
audit_ios_screen read-only profileprojectelementsviewportscreenshot
Audit a rendered iOS screen from a view-hierarchy/accessibility snapshot (and optional screenshot). Alias of audit_screen with platform:"ios". Call with no arguments for the expect…
audit_layout read-only elementsviewport
Evaluate visual rhythm from a rendered page's geometry. Call with no arguments to get a DevTools snippet to paste into your page — it prints {elements, viewport} JSON. Call again w…
audit_page read-only urlhtmlstrictcompactviewportinteractions +3
Audit HTML/CSS against Raven's design quality standards. Checks typography (min 13px, weight 400+, modular-scale heading ratios, line-height consistency), accessibility (WCAG touch…
audit_parity read-only ios*android*checklist*
Compare iOS vs Android element snapshots against a checklist of named spatial relationships (vertical centering, baseline/left alignment, equal gap/size, presence, truncation) and…
audit_responsive_visibility read-only url*breakpointsviewportHeight
Render a URL at multiple breakpoints and flag content elements that are visible on desktop but hidden on mobile (display:none / opacity:0 / visibility:hidden / zero-size). Categori…
audit_rn read-only source*strictprofileprojectcolor_scheme
Audit React Native / Expo source (JSX/TSX + StyleSheet) against the iOS HIG + Android Material conventions RN must satisfy. Flags touchables missing accessibilityLabel/accessibilit…
audit_screen read-only profileprojectelementsplatformviewportscreenshot +1
Audit a rendered mobile screen (iOS or Android) from a view-hierarchy/accessibility snapshot. Call with no arguments for the expected snapshot shape and how to capture it. Pass pla…
audit_swiftui read-only source*strictprofileprojectaccent_color_contents
Audit SwiftUI source against Apple's Human Interface Guidelines. Flags hardcoded .font(.system(size:)) below ~13pt and tiny semantic fonts (.caption/.caption2), hardcoded Color(red…
audit_tap_targets read-only urlminSizeelements
WCAG 2.5.5 / Apple 44pt tap-target audit for the web. Collects every interactive element (a, button, [role=button], input[type=submit/button/checkbox/radio], select, summary, label…
audit_typography read-only urlnodes
Audit the typographic SCALE of a rendered page (pass url) or a pre-collected snapshot of text nodes. Emits a focused report: (a) MODULAR SCALE — detects the dominant ratio (~1.2/1.…
audit_url read-only url*themescompacttimeoutMsviewportsinteractions +3
Layer 0 render-and-capture audit: renders a LIVE URL at each viewport×theme, scroll-settles (fires whileInView/IntersectionObserver reveals; plays preload=none videos), optionally…
audit_video_playback read-only urlobserveMsdom_snapshot
Render a page in headless Chromium and observe whether each <video> actually advances (samples currentTime before/after a play attempt), classifying every clip into playing|paused|…
compose_system read-only formatcompositions*
Mix tokens from different design systems to create a custom composite. Example: Linear's colors + Stripe's typography.
evaluate_design read-only goalscompactcontextdescriptionafter_screenshotbefore_screenshot
Evaluate a design description against UX principles. Returns relevant principles, potential violations, and improvement suggestions. Screenshot pixel-diff is disabled on the hosted…
generate_design_system read-only name*styleformatdark_modebase_systembrand_color
Generate a complete, custom design system with full token set. Provide a brand color to auto-generate a harmonious palette, pick a style preset, and export as visual HTML documenta…
generate_service_blueprint read-only idealactorscurrent*subtitleservice_name*
Render a service blueprint as a self-contained HTML page. Supports two modes: (1) classic Shostack single-actor blueprint — user action, frontstage, backstage, support, evidence, p…
get_brand_principles read-only topicformat
Get brand and visual-design principles — logo usage (clear space, min sizes, variants, placement, restraint), gradient usage (hierarchy, palette, contrast, trend vs signature), ima…
get_brand_system read-only modeformatcompany*
Get a complete design system for building an app with branding like a specific company. Say 'Make me an app with branding like Spotify' and get the full token set, style guide, and…
get_brand_trends read-only
Get current brand and visual-design trends — what's working in 2026 and where each trend fits or fails. Includes bento grids, monospace type, neon-on-dark-glass, generative pattern…
get_business_strategy read-only type*stage
Get business and monetization strategies for digital products. Covers monetization models, retention strategies, onboarding optimization, growth mechanics, and product metrics fram…
get_checklist read-only type*platform
Get a pre-publish checklist for a specific UI type. Returns actionable yes/no items to verify before shipping.
get_content_pattern read-only type*
Get content design patterns — copy recipes for error messages, empty-state copy, notifications, and form validation. Returns do's, don'ts, good/bad examples, evidence, and a checkl…
get_content_principles read-only formatcontext
Get UX-writing principles — clarity over cleverness, active voice, error-message anatomy, inclusive language, voice vs tone, and more. Filter by the writing context (e.g. 'error me…
get_content_system read-only id*section
Get a brand's content design system — voice attributes, tone shifts by context, vocabulary (use/avoid/never), grammar rules, content patterns for errors/empty-states/buttons/etc.,…
get_d4d_framework read-only stage
Get the Design for Delight (D4D) framework templates. Returns customer problem statement, ideal state, hypothesis, LOFA, and experiment templates for structured product thinking.
get_design_system read-only id*groupformat
Get design tokens for a specific design system. Returns colors, typography, spacing, radii, elevation, and motion tokens in W3C DTCG, CSS custom properties, or flat format.
get_metrics_framework read-only idsearch
Get a product-metrics framework — HEART (Google), AARRR/Pirate (Dave McClure), North Star Metric, Conversion Funnel, RICE Scoring, or OKRs. Returns structure, when-to-use, pitfalls…
get_pattern read-only goaltype*platform
Get proven UI/UX patterns for a specific design type. Returns do's, don'ts, evidence, and checklists for signup flows, pricing pages, navigation, forms, landing pages, dashboards,…
get_principles read-only formatcontext*categoryplatform
Get design principles relevant to a UI context. Returns usability heuristics, laws of UX, Gestalt principles, accessibility requirements, typography rules, and color theory — match…
get_research_method read-only searchcategory
Get research method details — qualitative (interviews, contextual inquiry, diary, field, intercept), quantitative (surveys, analytics, A/B tests, benchmarking, clickstream), or usa…
get_service_pattern read-only type*
Get a service design pattern — service blueprinting, human handoff, signup-as-service, omnichannel continuity, or moments of truth / recovery. Returns patterns, do/don't guidance,…
get_service_standard read-only
Get the GOV.UK Service Standard — 14 points the UK government uses to assess whether a public service is ready to launch. Widely applicable as a rigorous service-quality checklist…
list_content_systems read-only searchcategory
Browse available content design systems — brand voice and tone guides (Conversational Product Voice, GOV.UK, Shopify Polaris, Atlassian). Filter by category or search by name.
list_creative_models read-only capabilitymedia_type
Browse Raven's provider-agnostic creative model catalog. These are capability slots for image, video, 3D, audio, character consistency, and creative analysis. Each entry lists typi…
list_creative_presets read-only searchmedia_type
Browse Raven creative presets for product photoshoots, marketplace cards, UGC ads, TV spots, cinematic reveals, social launch packs, storyboards, and infographics.
list_design_systems read-only searchcategory
Browse available design systems for tokens. Filter by category (component-library, consumer, developer, fintech, framework, platform, productivity) or search by name.
score_creative read-only channelaudiencecreative_text*brand_profile_id
Score a creative prompt, script, or ad concept for hook strength, benefit clarity, product signal, call-to-action, channel fit, audience fit, and brand fit. This is a transparent h…
score_page read-only urlhtmlstrictcontainerMaxWidth
Score an HTML/CSS page across 7 design categories (Structure, Typography, Color & palette, Spacing & rhythm, Accessibility, Responsive layout, Design tokens), each rated 0–10. Scor…
search_knowledge read-only layerquery*
Search across all design principles, UI patterns, and business strategies. Use when you need to find specific guidance or don't know which category to look in.
suggest_contrast_fix read-only levelpairs
Given failing WCAG color pairs, return the MINIMAL color change that clears the target ratio. For each {fg,bg} pair, computes the smallest foreground adjustment (and an alternative…