Model parametric 3D geometry as code and edit mesh files programmatically. OpenSCAD (.scad) is the core for scripting solid models with named parameters; pair it with a Python mesh toolkit (trimesh/manifold3d) to inspect, repair, measure, scale, boolean, convert, and batch-generate STL/3MF — then optionally slice and print (Bambu Lab / OrcaSlicer). Use whenever the user wants to create, generate, design, model, script, parametrize, modify, repair, convert, or batch-produce a 3D model, part, or mesh: write or improve OpenSCAD/.scad code, turn a description into an STL or 3MF, make a part with adjustable/customizable dimensions, fix a non-watertight or non-manifold STL, scale/cut/boolean/convert an existing STL, render many variants, or design something to 3D print. Trigger even if they only say 'OpenSCAD', '.scad', 'STL', '3MF', 'edit/repair this STL', 'parametric model', 'CAD', 'make me a bracket/box/holder/knob', 'design for 3D printing', 'Bambu', 'Fusion 360', or 'Blender'. Bridges Fusion 360 and Blender.
Validate any Agent Skill against the agentskills.io specification plus project- or skill-local rule overrides. Use when auditing a skill folder for compliance, preparing a skill for distribution, checking PR-changed skills in CI, enforcing custom frontmatter rules, or verifying that a skill's `metadata`, `compatibility`, body length, and file references all meet the spec. Every rule is config-driven — point the validator at a YAML config to customize allowed/required/forbidden frontmatter fields, regex patterns for metadata values, timestamp formats, body thresholds, and placeholder bans. Triggers on: 'validate skill', 'check skill compliance', 'audit SKILL.md', 'lint skill folder', 'verify skill against agentskills.io', 'is this skill spec-compliant'.
Implement Better Auth (better-auth.com) — the framework-agnostic TypeScript authentication library — across ANY stack: Next.js, SvelteKit, Nuxt, SolidStart, Remix/React Router, Astro, TanStack Start, Express, Hono, Elysia, Fastify, or raw Node. Covers the betterAuth() server instance, database adapters (Drizzle, Prisma, Kysely/raw pg·mysql·sqlite, MongoDB), the CLI (generate/migrate), the client SDK (React, Vue, Svelte, Solid, vanilla), email/password + social/OAuth login (Google, GitHub, Apple…), account linking, sessions, and plugins (2FA, magic link, email OTP, passkey, username, organization multi-tenancy, admin, API keys, JWT/bearer, RBAC via access control). Use whenever the user adds, configures, scaffolds, or debugs Better Auth, sign-in/sign-up, sessions, OAuth, 2FA, multi-tenant orgs, or role-based permissions in a TS/JS app — even if they only say 'better auth', 'add login', or 'auth'. Ships a preflight, a scaffolder, and a setup doctor.
