Evaluate
Comprehensive quality evaluation for any AI-generated artifact. Produces its report as a visualization.
How It Works
┌──────────────────────────────────────────────┐
│ │
│ Phase 1: SPEC GENERATION │
│ Analyze the artifact type │
│ Generate tailored evaluation criteria │
│ Define scoring dimensions + weights │
│ Set quality gates │
│ │ │
│ ▼ │
│ Phase 2: EVALUATION │
│ Run automated checks (when possible) │
│ Visual/manual inspection │
│ Score each dimension with evidence │
│ Identify systemic vs local issues │
│ │ │
│ ▼ │
│ Phase 3: REPORT (via /visualize) │
│ Generate a beautiful HTML eval report │
│ Scores, charts, screenshots, fix list │
│ Radar chart of dimensions │
│ Before/after tracking │
│ │
└──────────────────────────────────────────────┘Phase 1: Spec Generation
For any artifact, generate evaluation specs by analyzing:
1. Identify Artifact Type
- HTML Visualization → visual design, interactivity, technical, content, shareability
- Code/Project → correctness, readability, architecture, test coverage, performance
- Document/Report → clarity, structure, accuracy, completeness, tone
- Conversation/Agent → helpfulness, accuracy, tone, efficiency, safety
- Slide Deck → all visualization dims + narrative flow, persuasion, pacing
- Dashboard → data accuracy, information density, scannability, actionability
- Custom → derive dimensions from the skill's SKILL.md and stated goals
2. Generate Dimensions
For each artifact type, produce 6-10 evaluation dimensions. Each dimension needs:
- Name — short, clear label
- Description — what this dimension measures
- Weight — percentage (all weights sum to 100%)
- Scoring anchors — what does a 10, 8, 6, 4 look like?
- Automated checks — any programmatic tests (if applicable)
- Deductions — specific issues and their point costs
3. Set Quality Gates
Define gates based on the artifact's purpose:
| Gate | Criteria | Meaning |
|---|---|---|
| 🚀 EXCEPTIONAL | Overall ≥ 9.5, all ≥ 9 | Best-in-class. Share everywhere. |
| ✅ SHIP | Overall ≥ 9.0, all ≥ 8 | Production-ready. |
| ⚠️ ACCEPTABLE | Overall ≥ 8.0, all ≥ 7 | Usable but not impressive. |
| 🔧 NEEDS WORK | Overall ≥ 7.0 or any < 7 | Fix before releasing. |
| ❌ FAIL | Overall < 7.0 or any < 5 | Major rework. |
4. Output Spec Document
Write the spec to eval-spec-[artifact-name].md for reference and reuse.
Phase 2: Evaluation
For HTML Visualizations
Open in browser at 3 viewports (1280×720, 768×1024, 375×667).
Automated audit (run in browser console):
(function() {
const audit = {};
const style = [...document.querySelectorAll('style')].map(s => s.textContent).join(' ');
const html = document.documentElement.outerHTML;
// Structure
audit.hasDoctype = /^<!doctype html>/i.test(html);
audit.hasLangAttr = !!document.documentElement.lang;
audit.hasCharset = !!document.querySelector('meta[charset]');
audit.hasViewport = !!document.querySelector('meta[name="viewport"]');
audit.hasTitle = document.title.length > 0;
// Menu system
audit.menuExists = !!document.querySelector('.viz-menu');
audit.menuHasTheme = !!html.match(/cycleTheme|themeLabel/i);
audit.menuHasDownload = !!html.match(/htmlToImage|html-to-image/i);
audit.menuHasPrint = !!html.match(/window\.print/i);
// Theme system
audit.hasCSSVars = !!style.match(/--bg\s*:/);
audit.hasDarkTheme = !!style.match(/(\.theme-dark|:root)[\s\S]*?--bg/);
audit.hasLightTheme = !!style.match(/\.theme-light/);
audit.themePersistedToStorage = !!html.match(/localStorage.*theme/i);
// Typography
audit.hasInterFont = !!html.match(/fonts\.googleapis.*Inter|font-family.*Inter/i);
audit.hasFontFallback = !!style.match(/-apple-system|system-ui/);
audit.bodyFontSize = parseFloat(getComputedStyle(document.body).fontSize);
audit.bodyFontOK = audit.bodyFontSize >= 14;
// Layout
audit.usesFlexOrGrid = !!(style.match(/display\s*:\s*(flex|grid)/));
audit.hasMaxWidth = !!style.match(/max-width/);
audit.hasResponsiveBreakpoints = !!style.match(/@media.*max-width|@media.*min-width|sm:|md:|lg:/);
// Print & Accessibility
audit.hasPrintStyles = !!style.match(/@media\s*print/);
audit.hasPrintColorAdjust = !!style.match(/print-color-adjust/);
audit.hasReducedMotion = !!style.match(/prefers-reduced-motion/);
audit.hasAriaLabels = !!html.match(/aria-label/);
audit.hasSemanticHTML = !!html.match(/<(header|main|nav|section|article|footer)/);
// Animations
audit.hasKeyframes = !!style.match(/@keyframes/);
audit.hasTransitions = !!style.match(/transition\s*:/);
// Performance
audit.fileSizeKB = Math.round(new Blob([html]).size / 1024);
audit.fileSizeOK = audit.fileSizeKB < 200;
audit.noExternalImages = document.querySelectorAll('img[src^="http"]').length === 0;
audit.htmlToImageLoaded = typeof htmlToImage !== 'undefined';
// Summary
const bools = Object.entries(audit).filter(([k,v]) => typeof v === 'boolean');
const passed = bools.filter(([k,v]) => v).length;
audit._passed = passed;
audit._total = bools.length;
audit._percent = Math.round(passed / bools.length * 100);
audit._failures = bools.filter(([k,v]) => !v).map(([k]) => k);
console.table(audit);
return audit;
})();Visual scoring — 8 dimensions for visualizations:
| # | Dimension | Weight | 10 = | 6 = |
|---|---|---|---|---|
| D1 | First Impression | 15% | Apple keynote quality | Generic template feel |
| D2 | Typography | 15% | Perfect hierarchy, Inter font, fluid sizing | All same size, no hierarchy |
| D3 | Color & Contrast | 10% | Harmonious, WCAG AA, both themes beautiful | Clashing, low contrast |
| D4 | Layout & Spacing | 15% | Consistent rhythm, responsive, generous space | Cramped, broken at mobile |
| D5 | Content Quality | 15% | Clear message in 5 seconds, zero filler | Confusing, placeholder text |
| D6 | Interactivity | 10% | Menu + theme + download + print all flawless | Missing features, broken |
| D7 | Technical | 10% | Zero errors, semantic, accessible, print-ready | Console errors, broken layout |
| D8 | Shareability | 10% | Would tweet this unprompted | Worse than Canva |
For Code/Projects
Dimensions: Correctness, Readability, Architecture, Error Handling, Performance, Testing, Documentation, Security
For Documents
Dimensions: Clarity, Structure, Accuracy, Completeness, Tone, Formatting, Actionability, Brevity
For Agent Conversations
Dimensions: Helpfulness, Accuracy, Tone, Efficiency, Safety, Context Awareness, Tool Usage, Follow-through
Phase 3: Visual Report (via /visualize)
After scoring, generate the eval report as a beautiful HTML dashboard using the visualize skill:
Report Structure
- Hero — artifact name, overall score (big number), quality gate badge
- Radar Chart — all dimensions plotted on a radar/spider chart (Chart.js)
- Dimension Cards — each dimension as a card with score, bar, key notes
- Automated Audit — pass/fail checklist with percentages
- Screenshots — key views embedded (if HTML artifact)
- Fix List — prioritized fixes as a kanban-style layout (critical / high / medium / low)
- Systemic Issues — patterns that affect all outputs (flagged for SKILL.md fixes)
- History — if re-evaluating, show before/after score comparison chart
Report Filename
eval-report-[artifact-name]-[date].html
The report itself must score ≥ 9.0 on the visualize eval criteria.
This is the ultimate dogfood test — our evaluation tool produces evaluations using our visualization tool.
The Improvement Loop
Generate artifact (any skill)
↓
/evaluate → Spec + Score + Visual Report
↓
Review report → identify fixes
↓
Fix (systemic → SKILL.md, local → artifact)
↓
/evaluate again → compare scores
↓
Ship when gate = SHIP or EXCEPTIONALMax 3 loops per artifact. If it can't reach SHIP in 3 loops, the problem is in the skill — update the skill's instructions, not the artifact.
Quick Start
# Evaluate a visualization
/evaluate path/to/visualization.html
# Evaluate with custom context
/evaluate path/to/code-project --type code
# Re-evaluate after fixes (tracks improvement)
/evaluate path/to/visualization.html --loop 2
# Generate specs only (no scoring)
/evaluate --specs-only --type dashboard