Raven benchmark report

• npxconfidence: high

  npx -y raven-mcp

• prompt

  appraise

  Structured critique against the caller's own taste portrait, findings ranked by recorded priorities.

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  cadence

  Type and rhythm pass: typography audit against Raven's typography principles.

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  plumage

  Color-system pass: contrast plus palette-discipline guidance from Raven's color principles.

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  preen

  Full grooming pass: mechanical scan, taste audit, and a fix-verification loop.

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  truesight

  Mechanical-only report: deterministic findings, no taste or subjective judgment.

• tool

  audit

  Run **all applicable** Raven audits for a target. Detects the surface (web page / iOS screen / React Native / code diff / video) and fans out to the right checks — contrast, tap targets, typography, layout, responsive, and taste for web; the iOS or RN set for native; parity/contract for diffs. **Use this instead of choosing individual audit_* tools.** Pass `project` to judge against bound taste.

• tool

  audit_api_contract

  Run adversarial queries against a live endpoint and return per-query verdict (shape-valid / shape-invalid / confident-wrong / uncertain) vs an expected shape schema + per-query expectations. Catches responses that are shape-valid but wrong.

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  audit_asset_integrity

  Detect PNG exports whose content is sliced/cut off at the bottom edge (e.g. a Figma export that ended mid-form). Dimension/ratio checks cannot catch cut content inside a correctly-sized file; this measures per-pixel luminance variance in the bottom strip — uniform background = clean, high-variance UI content running into the edge = likely-sliced. Accepts filesystem paths to PNGs.

• tool

  audit_consistency

  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. Infers the canonical (modal) value from the corpus when no token is supplied, so you need not know the project's design token in advance. Flags the issue #9 single-blob blind spot: pages that each pass audit_page but silently disagree with each other on container width or hero size class. Returns per-page extraction (container_px, container_classes, hero_classes, signatures), consistency dimensions with reference values, outlier page names, issues[], score (100/50/0 → A/C/D), and a plain-text summary. Pure offline — no browser, no network.

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  audit_content

  Evaluate an array of content items (headings, prose, CTAs, labels, captions, metrics, outcomes) against UX-writing principles and deterministic heuristics. Returns a per-item verdict (pass/warn/fail) with matched principle ids, concrete issues grounded in principle text, a before→after rewrite suggestion, and an aggregate summary. Heuristics: metric items must carry a number+unit; cta/label must be action-led and ≤4 words; prose flags passive voice, jargon, and hedging; headings flag filler openers and buzzwords; captions flag duplication of any heading in the batch. Pure offline — no network or browser. Use this instead of evaluate_design when you need per-item content verdicts rather than the principle library.

• tool

  audit_contract

  Verify a wire contract (token list / field set / schemaVersion) is identical across N independent source files (iOS Swift, proxy JS, Android Kotlin). Flags missing/inconsistent tokens, schemaVersion drift, and prefix-ordering bugs (a contained token matched before the longer one). BLOCK/PASS verdict.

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  audit_contrast

  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 per element and surfaces failing pairs with selector, ratio, and delta-to-pass — replacing manual eyedropper + ratio math.

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  audit_device_frame

  Detect cropped content in device-mockup frames (phone/MacBook screenshots, app-preview clips). Three checks: (1) GEOMETRY — call with `frames` (container box + intrinsic media size + object-fit/position; call with NO args for a DevTools snippet) to flag object-fit:cover crop loss when the frame's aspect ratio ≠ the media's; (2) MOTION — pass `clips` (first/last frame PNG paths) to detect baked-in pan/zoom (Ken Burns) that drifts the composition; (3) EDGE — pass `edge_frames` (PNG paths) to flag content truncated at a frame edge. Catches the exact failure where a 16:9 clip in a 1.82-AR screen cutout silently slices the bottom, or a Ken-Burns-zoomed source crops content.

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  audit_ios_a11y

  Score an accessibility-enriched iOS element snapshot — missing accessibilityLabel/value/traits, sub-44pt tap targets, per-text WCAG contrast, Dynamic Type clipping, and VoiceOver reading order. Provide {elements:[{label,value,hint,traits,role,rect,fontPt,fgColor,bgColor,dynamicTypeClipped}],viewport}. Capture via the AccessibilitySnapshot XCUITest / ios-capture harness.

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  audit_ios_privacy

  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) — plus optional PRIVACY.md, entitlements, and source. Flags: NS*UsageDescription strings that are vague/missing or contradict the code (e.g. a HealthKit write claim the code never fulfills), entitlements/permissions and Android permissions the app doesn't use, ATS cleartext exceptions and non-HTTPS endpoints, secrets/keys shipped in the bundle or app.json, and default data-egress paths not disclosed at the point of choice (a pre-selected 'Recommended' option that silently sends personal data to a server). Same return shape as audit_page.

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  audit_ios_screen

  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 expected snapshot shape. Call with {elements:[{label,rect:{x,y,w,h},role,fontPt,fgColor,bgColor}],viewport:{w,h}} to score 44×44pt touch targets, contrast (with iOS secondaryLabel/tertiaryLabel treated as platform-standard — warn not fail), and visual rhythm (alignment, gap consistency, optical balance) in points. Same return shape as audit_page.

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  audit_layout

  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 with that JSON to get alignment, gap-rhythm, and optical-balance scores. This is the complement to audit_page for things only visible once rendered.

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  audit_page

  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 targets, alt text, contrast), responsive patterns (flexbox over grid, clamp sizing, max-width containers), style guide compliance (CSS custom properties, no bare hex), and visual rhythm (4/8px spacing grid, tight spacing scale, palette size). Pass containerMaxWidth (your design system's canonical container token, in px) to make the max-width check token-aware — it then flags containers that diverge from your system (too narrow OR too wide) instead of a generic 1200px heuristic. Returns pass/fail per check with specific fix instructions.

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  audit_parity

  Compare iOS vs Android element snapshots against a checklist of named spatial relationships (vertical centering, baseline/left alignment, equal gap/size, presence, truncation) and flag per-relation match/mismatch/uncertain — catches cross-platform layout drift like status text centered on one platform but top-aligned on the other. Provide ios+android {elements,viewport} snapshots and a checklist[].

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  audit_responsive_visibility

  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). Categorises each flag as 'likely-oversight' (content that vanishes on mobile — the hidden-on-mobile content bug) vs 'intentional' (decorative). Returns a table of selector / hiding-class / mobile-visible / desktop-visible / category. Requires headless chromium.

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