Recently updated open-source projects

System Design Tutor turns Claude Code into a course controller that can teach a planned curriculum, jump to a specific concept, review a design, or run a mock interview. The material is anchored to DDIA and the System Design Primer, with real incident studies, more than thirty runnable exercises, and SM-2 spaced repetition. Progress, exercise files, and session state persist locally so the course can resume across sessions.

NDS-GEBBIA is a draft suite of Claude skills for civic service modernization, 0-to-1 venture incubation, and XR or immersive prototyping. Each skill keeps its own doctrine, knowledge base, schema, and examples; a suite coordinator can chain them for cross-domain briefs. It is illustrative, not an official government deliverable or legal advice, and it does not recreate private beliefs.

Review blog posts, READMEs, commit messages, or other English prose for formulaic AI patterns, with a score and span-level findings across six dimensions. It can preview minimal or aggressive rewrites before applying changes, but it does not fact-check claims or replace a separate voice and style pass.

For landing pages, dashboards, SaaS interfaces, and component libraries, the skill starts from a design brief, defines color, typography, spacing, and motion tokens, then implements with concrete component and animation patterns. It self-scores design quality, originality, craft, and functionality, adds a WCAG 2.2 AA gate, and assumes a Next.js, Tailwind, and shadcn/ui-oriented stack by default.

Use the Claude Code skill to copy ready-made HTML/JSX scaffolds into a project instead of rebuilding presentation and prototype structure from scratch. It includes a slide stage, design canvas, iOS and Android frames, macOS and browser chrome, animation helpers, and tweak controls. The JSX pieces expect React 18 with Babel Standalone.

This skill routes an image request from Claude on the web or desktop through Desktop Commander MCP to a locally installed Codex CLI, then saves the resulting PNG and displays it back in the conversation. It requires a Mac, an authenticated Codex installation, image generation enabled in Codex configuration, and a working Desktop Commander connection. The workflow is limited to single text-to-image requests; batch generation, image editing, video, and transparent-background output are outside its scope.

This Claude Code skill turns a natural-language motion concept into a live HTML playground for iterating on timing, typography, and transitions. The final animation uses plain CSS and JavaScript and can be exported as a React component, with ten reusable motion patterns and a complete worked example included for reference.

Specdd turns a vague feature request into a tech-free specification and short plan before implementation. It scales the workflow from a small Quick change to a Feature or Project, asks only missing questions, and runs a production checklist for states, accessibility, keyboard use, mobile behavior, and observability. It works with coding agents that can read skill instructions and needs no dedicated CLI.

Design Atlas turns a product brief into a screen-by-screen research report. It interviews for product and brand alignment, enumerates states such as empty, loading, error, and populated, queries Mobbin for each screen, and bundles curated references into a self-contained HTML atlas. SaaS and iOS work are documented as proven; marketing sites remain experimental, and full access requires an authenticated paid Mobbin plan.

Ask Claude for Laravel work ranging from routing, Eloquent, queues, authentication, caching, and file storage to complete API or background-job examples. The skill is specifically oriented toward Laravel 13 additions, including the AI SDK, MCP server support, Laravel Boost, JSON:API resources, and attribute-based patterns. Its main value is keeping generated code aligned with the newer framework instead of falling back to Laravel 10 or 11 habits.

This skill rewrites articles, social posts, essays, cover letters, and other drafts to remove recognizable machine-like habits without relying on a banned-word list. It can match a supplied writing sample and focuses on concrete details, direct openings, varied rhythm, honest uncertainty, and endings that say something specific.

Run an independent review cycle on a written plan before implementation. The skill dispatches a domain-specific reviewer for software, Brazilian Portuguese judicial drafting, or a generic case, walks through findings, and uses a deterministic Python validator that fails while blocking findings remain open. It is useful for teams that want explicit acceptance and validation before execution; the judicial mode is tailored to CNJ Resolution 615/2025 audit obligations.

This Claude skill adds a security baseline around WebFetch, WebSearch, GitHub reads, foreign repository documents, PDFs, and MCP outputs. It quarantines external content as data, scans for injection patterns and hidden Unicode, blocks recursive fetches and risky downloads, protects personal information in URLs, and provides optional pre- and post-fetch hooks.

This Claude AI skill turns a structured ten-round interview into organization-design deliverables for small and midsize businesses. It can produce department and role RACI matrices, a work-analysis workbook, an organization preview, industry-specific templates, version differences, and consistency checks. It still depends on a consultant's observation and judgment—especially around authority and accountability—and expects a reference case for format alignment.

bpmn-xml-generator turns plain-language process descriptions into BPMN 2.0 XML for Claude Code or Cline. It asks for missing details, validates connectivity, gateway conditions, timer formats, and Camunda extensions, and can add a BPMNDiagram layout for editors such as bpmn.io. The automatic layout path requires Node.js 18 or newer; the core skill works as a Markdown-based agent skill.

Use this agent-agnostic skill for plans, specifications, code reviews, architecture explainers, reports, prototypes, slide decks, or small editing tools that benefit from layout and interaction. It selects among 20 patterns and produces one self-contained HTML file with inline CSS and JavaScript, responsive behavior, keyboard access, contrast checks, and export controls. Simple prose, tiny tables, and code-only answers are intentionally left in Markdown.

This Claude skill packages twelve SEO workflows for site and page audits, technical SEO, content quality and E-E-A-T, AI search or GEO readiness, schema, sitemaps, images, hreflang, competitor pages, and programmatic SEO. It also covers web work adjacent to App Store and Play Store optimization, while excluding in-product UX, usability, funnel, retention, and revenue analysis.

claude-scaffold-project asks a small set of setup questions, previews every file, and then creates project documentation, conventions, an initial backlog item, and optional Node CLI or Python MCP starter files before initializing Git. It can also backfill missing structure without overwriting existing files and promote reusable infrastructure patterns into future extension packs. The skill itself is written in Russian.