Alcheon

Previous value: -"The CSS :root {} token set from generate_design_tokens. Paste the full token block. The section spec will reference these variables (var(--color-primary), var(--font-heading), etc.) instead of generating its own values."New value: +"REQUIRED: The COMPLETE, UNTRUNCATED CSS output from generate_design_tokens. Pass every single line of the token file verbatim — do NOT summarise, abbreviate, or cherry-pick tokens. The full file is needed so the section spec can reference every var() correctly (colors, typography, spacing, shadows, motion, buttons, cards, etc.). Partial token sets produce broken or inconsistent output."

Added value: +{
+  "description": "Optional list of structural patterns or compositions to explicitly avoid. E.g. ['3-column grid', 'centered hero text', 'gradient background']. Use this to force divergence from previous results or steer away from overused layouts.",
+  "items": {
+    "type": "string"
+  },
+  "type": "array"
+}

Added value: +{
+  "description": "Optional CSS class prefix for all generated class names. E.g. 'gvp2' → classes like .gvp2-hero, .gvp2-card. Prevents collisions when multiple sections coexist on one page.",
+  "type": "string"
+}

Added value: +{
+  "description": "Optional target container width in pixels. When set, the spec will scale layout values (padding, font sizes, gaps) appropriately for a constrained container instead of assuming full viewport width. E.g. 800 for an embedded panel, 1200 for a standard page.",
+  "type": "number"
+}

Removed value: -{
-  "description": "Optional list of patterns to consciously avoid, even if common across reference sites. E.g. ['product_screenshots', 'hamburger_nav', 'hero_gradients', 'stats_section']",
-  "items": {
-    "type": "string"
-  },
-  "type": "array"
-}

Removed value: -{
-  "description": "Optional list of design aspects to emphasize from the reference sites. E.g. ['spacing_rhythm', 'gradient_hero', 'dark_sections', 'typography']",
-  "items": {
-    "type": "string"
-  },
-  "type": "array"
-}

Previous value: -"A description of the UI you're designing. Be specific about: product type, target audience, mood, any hard constraints. E.g. 'A dark-themed SaaS dashboard for a developer monitoring tool. Target audience: backend engineers. Clean, data-dense, no marketing fluff.'"New value: +"What is the product and what vibe/mood should the design convey? Focus on identity, not page structure. Include: product type, target audience, aesthetic mood, any hard constraints. Do NOT list specific page sections (hero, pricing, etc.) — this tool generates the design system, not page architecture. E.g. 'A dark, premium SaaS for developer monitoring. Audience: backend engineers. Mood: data-dense, technical, no marketing fluff.' E.g. 'AI design intelligence tool for coding agents. Sophisticated, high-craft, dark UI with strong typographic hierarchy.'"

Added value: +{
+  "description": "Optional actual content for the section — headlines, feature names, pricing tiers, testimonial quotes, FAQ items. When provided, the HTML skeleton will use this real content instead of placeholder slots.",
+  "type": "string"
+}

Previous value: -"Optional context about what you're building. Helps tailor the recommendations. E.g. 'A developer tool landing page with a dark theme' or 'E-commerce site for sustainable fashion'"New value: +"Optional context about the project. E.g. 'A developer tool landing page' or 'B2B DevOps product with a dark UI'"

Previous value: -"Maximum number of real-world examples to include (default: 6)"New value: +"Maximum number of reference examples to analyze for structural patterns (default: 5)"

Previous value: -15New value: +10

Previous value: -"The type of section or component to get inspiration for. E.g. 'how it works', 'pricing', 'hero', 'FAQ', 'testimonials', 'feature grid', 'stats counter', 'CTA banner', 'onboarding steps', 'comparison table'"New value: +"The type of section to build. E.g. 'hero', 'pricing', 'FAQ', 'testimonials', 'feature grid', 'stats counter', 'CTA banner', 'how it works', 'comparison table', 'footer'"

Previous value: -"Optional list of specific site slugs to draw inspiration from. If omitted, searches all available sites. E.g. ['stripe_com', 'linear_app']"New value: +"Optional: restrict structural pattern search to specific site slugs. LEAVE BLANK in most cases — the tool searches all sites and produces more diverse, unexpected structures. Do NOT pass the same sites used as DNA for generate_design_tokens; those sites' aesthetic is already baked into the token set, so restricting structural search to them too creates an echo chamber. Only pass specific slugs when you explicitly want structure from a particular site (e.g. 'I want a Stripe-style pricing layout')."

Added value: +{
+  "description": "The CSS :root {} token set from generate_design_tokens. Paste the full token block. The section spec will reference these variables (var(--color-primary), var(--font-heading), etc.) instead of generating its own values.",
+  "type": "string"
+}

Previous value: -[
-  "sectionType"
-]New value: +[
+  "sectionType",
+  "tokenSet"
+]

Previous value: -"Array of site slugs to draw inspiration from (use list_sites to see available options). E.g. ['stripe_com', 'linear_app', 'vercel_com']"New value: +"Array of site slugs to draw inspiration from (use list_sites to see available options). E.g. ['stripe_com', 'linear_app', 'vercel_com']. OMIT to auto-select — Alcheon scores all sites for relevance then applies a farthest-point diversity algorithm ensuring the set spans different visual approaches. Always prefer omitting over manually picking sites via search_sites, which lacks this diversity guarantee."

Previous value: -[
-  "sites",
-  "intent"
-]New value: +[
+  "intent"
+]

Removed value: -{
-  "description": "When true, selects sites that OPPOSE each other on a key design axis rather than sites that agree. The response names the contrast axis — pass it as contrastAxis to synthesize_brief. Use this after a repetition warning, or when the user wants something genuinely unexpected.",
-  "type": "boolean"
-}