Why this system consistently teaches real-world building (from our engineering team)

• Schema-first instruction generation: Every build is produced using a fixed, auditable structure (overview → sub-assemblies → step order → bill of materials → verification checks). This prevents instruction drift and ensures repeatable, buildable results.
• Brick-native measurement system: All dimensions are expressed in studs and plates, with enforced conversion rules and fit constraints that match real LEGO geometry—no abstract or approximate units.
• Phase-gated validation: Each build stage is validated independently using measurable criteria (part counts, clearances, structural stability, assembly order). Fragile or non-buildable designs are rejected before they reach the final output.
• Bill-of-Materials integrity checks: Parts lists are verified for physical possibility, availability, and practical sourcing. Rare or problematic elements are flagged, with real-world substitutions recommended.
• Controlled complexity scaling: Designs are generated across four defined difficulty tiers, allowing builders to balance time, part availability, durability, and display vs. play requirements.
• Transparent uncertainty handling: When information is incomplete, the system explicitly labels assumptions and proposes viable alternatives—no hidden guesses or fabricated certainty.

The goal is straightforward: train AI to produce LEGO-legal, repeatable, real-world build instructions—then deliver plans you can trust and actually build from. The result is faster iteration, fewer surprises, and more reliable outcomes. As the system improves, your future builds become easier, cheaper, and more predictable.

MOD Builders WEBRICK-COMPATIBLE

Benefits for real-build MOD/MOC workflows

Benefits at a glance

• 
  From concept to instructions—fast. Auto-structured plans are generated with clear headers, numbered steps, and logical build order. Each output includes verification checks so builders know *why* a step matters. A complete, clean BOM maps directly to Webrick for fast sourcing.


• Build with what you have. Designs bias toward common, currently available parts rather than rare or discontinued elements. Substitution logic is included so alternatives are suggested automatically. This keeps costs down and builds realistic for home inventories.


• Real-Build Mode = confidence. Switch features, proportions, and layouts without restarting from scratch. Validate structure and part logic before ordering anything. Once satisfied, lock the design so instructions stay stable and repeatable.


• Preview the outcome. Optional final build mockups show the assembled model before you commit. This helps verify proportions, stance, and visual balance early. Fewer surprises means smarter decisions before purchase or publication.


• Professional control. Outputs follow defined constraints instead of vague creative drift. Results are testable, repeatable, and suitable for client-facing work. Ideal for educators, publishers, and serious LEGO planners.


• Fewer rebuilds. Stability heuristics flag weak spans and stressed connections early. Problem areas are identified before they fail in real hands. This prevents the classic “looks fine now, breaks later” rebuild cycle.