get_content_system
Get a brand's voice attributes, tone shifts, vocabulary, grammar, and content patterns
How to use it
get_content_system is exposed by the Raven MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the get_content_system tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.
Install Raven MCP
npx -y raven-mcpOther tools in Raven MCP (39)
Corpus/multi-page audit — compares ≥2 pages and flags cross-page divergence in content-container width and hero heading tier, inferring the canonical (modal) value from the corpus when no token is supplied — catching relational defects that single-page audits miss
Per-item content verdicts (pass/warn/fail) for headings, prose, CTAs, labels, captions, metrics & outcomes against UX-writing principles + deterministic heuristics (metric needs number+unit; CTA action-led ≤4 words; prose flags passive/jargon/hedging; caption-vs-heading duplication) — with a before→
Compute WCAG contrast for rendered text with tri-state status (pass, fail, indeterminate), effective backdrops, ratio ranges, and delta-to-pass only where the backdrop is determinate
Flag cropped content in device-mockup frames — frames (container box + intrinsic media + object-fit, or a DevTools snippet) detects object-fit:cover crop loss when frame AR ≠ media AR; clips (first/last frame PNGs) detects baked-in pan/zoom (Ken Burns); edgeframes (PNGs) flags content truncated at a
Audit Info.plist (or Expo app.json) /PRIVACY.md/entitlements/source — usage-string honesty, ATS, Android permissions, bundled secrets, undisclosed default data-egress
Score a rendered iOS screen from an accessibility/view-hierarchy snapshot — 44pt targets + contrast + rhythm, in points
Evaluate visual rhythm, alignment, and optical balance; detects orphan-stretch (a lonely last-row grid/flex card stretching far wider than siblings)
Audit HTML/CSS against Raven's quality standards — pass html for static audit, or url to render headless with optional scrollsettle (step through reveal gates, then return to top) and viewport parameters; containerMaxWidth makes container checks token-aware. Also flags inline SVG icons that hardcode
Render a URL at multiple breakpoints and flag content elements that are visible on desktop but hidden on mobile (display:none/opacity:0/zero-size) — categorises each as likely-oversight (content vanishing on mobile) vs intentional (decorative)
Audit React Native / Expo source — touchable a11y labels, 44/48pt+hitSlop targets, font scaling, SafeAreaView, dark mode, against iOS HIG + Android Material
Audit SwiftUI source against Apple HIG — Dynamic Type, semantic colors, 44pt targets, 4/8pt spacing, AccentColor
WCAG 2.5.5 / Apple 44pt web tap-target audit — enumerates every interactive element (rendered URL or snapshot) and emits a per-element fix table: selector, role, text, measured w/h, per-axis pixel deficit, and a concrete CSS fix, sorted worst-first
Typographic-scale report over rendered DOM text nodes (or a supplied snapshot) — detects the dominant modular-scale ratio and flags off-scale sizes, checks line-height consistency vs the body rhythm, and flags weight ladders >4 weights or non-standard values. Goes beyond auditpage's pass/fail typogr
Render a live URL at each viewport×theme, scroll-settle, fire interactions, capture real pixels + DOM, then run the page/contrast/responsive/blank-media checks plus sliced-image edge-symmetry and hover-state white-wash detection over the captures — every finding tagged confirmed/likely-artifact/inco
Render a page and observe whether each <video> actually advances — samples currentTime, readyState, error codes, and autoplay-block state, then classifies each clip into playing
Mix tokens from different systems
Evaluate a design description against principles. Pass base64 PNG screenshots (beforescreenshot/afterscreenshot) for a structured before/after pixel diff with fixconfirmed, changedratio, and changed region. Pass compact: true to return only scores and violations (drops full principle/pattern bodies)
Generate a custom design system from a brand color
Render a service blueprint as HTML — current state, or current vs. ideal side-by-side
Get brand/visual principles — logo, gradient, imagery, hierarchy, brand-as-system
Get a full system styled like a well-known brand
Get current (2026) brand and visual-design trends with usage guidance
Get business/monetization strategies
Get a pre-publish checklist for a UI type
Get copy recipes for error messages, empty-state copy, notifications, form validation
Get UX-writing principles — clarity, active voice, error anatomy, inclusive language
Get Design for Delight framework templates
Get tokens for a specific design system
Get a product-metrics framework — HEART, AARRR, North Star, conversion funnel, RICE, OKRs
Get proven patterns for a specific UI type
Get design principles relevant to a UI context
Get qualitative, quantitative, or usability research methods with protocols and checklists
Get a service design pattern — blueprinting, human handoff, signup-as-service, omnichannel, moments of truth
Get the GOV.UK Service Standard — 14 points for evaluating service quality
Browse brand voice & tone systems (Conversational Product Voice, GOV.UK, Shopify Polaris, Atlassian)
Browse available design systems
Return a per-category (0–10) design score for a page — typography, accessibility, spacing, color, responsive layout, design tokens, structure — derived from the same checks as auditpage, plus the overall score/grade, the weakest category, and categories Raven does not mechanically assess (brand, con
Search across all principles, patterns, and strategies
Given failing WCAG color pairs, return the minimal fg/bg change that clears the AA/AAA target — concrete passing values to fix auditcontrast failures