Guides users on creating mock implementations for testing with traits, providing test doubles, and avoiding tight coupling to test infrastructure. Activates when users need to test code with external dependencies.

Introduces property-based testing with proptest, helping users find edge cases automatically by testing invariants and properties. Activates when users test algorithms or data structures.

Quick start guide for creating MCP servers with the rmcp crate - installation, concepts, and first server

Type-driven design patterns in Rust - typestate, newtype, builder pattern, and compile-time guarantees

Setup instructions for this project

**Goal**: Create comprehensive PRDs, tech specs, and ux specs based on feature requirements

Generate structured, actionable task roadmaps from project specifications (PRD, Tech Specs, UI/UX Specs).

Test-Driven Development (TDD) using Vitest and TypeScript. Use when the user requests help with TDD, writing tests before code, test-first development, Vitest test setup, TypeScript testing patterns, unit testing, integration testing, or following the Red-Green-Refactor cycle with Vitest.

Create single-file HTML prototypes focused on validating user flows, interaction patterns, and information architecture. Prioritize UX fidelity over visual polish.

Formats and prettifies JSON with configurable indentation

Browser automation tool using Playwright - captures screenshots and extracts content from web pages

Analyzes text and provides word count, character count, and sentence statistics

Tests error visibility for build step failures

A tool that echoes its input for testing

A test tool that fails with visible output

Basic git operations for repository inspection. Use for git diff, git log, git status, git remote, and other read-only git commands.

Guide for setting up and using Firebase Authentication. Use this skill when the user's app requires user sign-in, user management, or secure data access using auth rules.

The definitive, foundational skill for ANY Firebase task. Make sure to ALWAYS use this skill whenever the user mentions or interacts with Firebase, even if they do not explicitly ask for it. This skill covers everything from the bare minimum INITIAL setup (Node.js setup, Firebase CLI installation, first-time login) to ongoing operations (core principles, workflows, building, service setup, executing Firebase CLI commands, troubleshooting, refreshing, or updating an existing environment).

firecrawl-map

firecrawl-scrape

firecrawl-search

为 Java 项目生成自动化单元测试（JUnit 5 + Mockito）。当用户要求编写单元测试、生成测试用例或提升测试覆盖率时使用。

Generate walkthrough videos from Stitch projects using Remotion with smooth transitions, zooming, and text overlays

Unified entry point for Stitch design work. Handles prompt enhancement (UI/UX keywords, atmosphere), design system synthesis (.stitch/DESIGN.md), and high-fidelity screen generation/editing via Stitch MCP.

Google Tasks: Manage task lists and tasks.

Automatically share skills, migrate local skills to code repositories, open source skills, skill version management, configure git remote

Write follow-up emails that re-engage without being annoying. Uses proven psychology for follow-up sequences. 42% of replies come from follow-ups.

Batteries-included agent component from [ui.inference.sh](https://ui.inference.sh).

Create AI marketing videos for ads, promos, product launches, and brand content. Models: Veo, Seedance, Wan, FLUX for visuals, Kokoro for voiceover. Types: product demos, testimonials, explainers, social ads, brand videos. Use for: Facebook ads, YouTube ads, product launches, brand awareness. Triggers: marketing video, ad video, promo video, commercial, brand video, product video, explainer video, ad creative, video ad, facebook ad video, youtube ad, instagram ad, tiktok ad, promotional video, launch video

Chat building blocks from [ui.inference.sh](https://ui.inference.sh).

Product Hunt launch optimization with specific specs, timing, and gallery strategy. Covers taglines, gallery images, maker comments, and launch day tactics. Use for: product launches, startup launches, side project launches, Product Hunt optimization. Triggers: product hunt, ph launch, product hunt launch, launch strategy, product launch, startup launch, product hunt tips, product hunt gallery, ph optimization, launch day, product hunt maker

Technical blog post writing with structure, code examples, and developer audience conventions. Covers post types, code formatting, explanation depth, and developer-specific engagement patterns. Use for: engineering blogs, dev tutorials, technical writing, developer content, documentation posts. Triggers: technical blog, dev blog, engineering blog, technical writing, developer tutorial, tech post, code tutorial, programming blog, developer content, technical article, engineering post, coding tutorial, technical content

Tool lifecycle components from [ui.inference.sh](https://ui.inference.sh).

Declarative UI from JSON via [ui.inference.sh](https://ui.inference.sh).

agent-ui

ai-rag-pipeline

web-search

Retrieve up-to-date documentation for software libraries, frameworks, and components via the Context7 API. This skill should be used when looking up documentation for any programming library or framework, finding code examples for specific APIs or features, verifying correct usage of library functions, or obtaining current information about library APIs that may have changed since training.

Turn a product brief, campaign idea, or reference image into MaxArt-ready image and video prompt packs, shot lists, style directions, and creative variation plans. Use when the user wants ads, social creatives, product shots, stylized edits, text-to-image prompts, image-to-video motion plans, or reusable prompt systems intended to be rendered in MaxArt.ai.

Keeps IdeaVim documentation in sync with code changes. Use this skill when you need to verify documentation accuracy after code changes, or when checking if documentation (in doc/, README.md, CONTRIBUTING.md) matches the current codebase. The skill can work bidirectionally - from docs to code verification, or from code changes to documentation updates.

tailwind-v4-shadcn

Analyze article structure and content, identify positions requiring visual aids, and generate illustrations with flexible style options.

Generate hand-drawn style cover images for articles with multiple style options.

AI image generation with OpenAI and Google APIs. Supports text-to-image, reference images, aspect ratios, and parallel generation (recommended 4 concurrent subagents). Use when user asks to generate, create, or draw images.

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Cloud laboratory platform for automated protein testing and validation. Use when designing proteins and needing experimental validation including binding assays, expression testing, thermostability measurements, enzyme activity assays, or protein sequence optimization. Also use for submitting experiments via API, tracking experiment status, downloading results, optimizing protein sequences for better expression using computational tools (NetSolP, SoluProt, SolubleMPNN, ESM), or managing protein design workflows with wet-lab validation.

Access BRENDA enzyme database via SOAP API. Retrieve kinetic parameters (Km, kcat), reaction equations, organism data, and substrate-specific enzyme information for biochemical research and metabolic pathway analysis.

Multiagent AI system for scientific research assistance that automates research workflows from data analysis to publication. This skill should be used when generating research ideas from datasets, developing research methodologies, executing computational experiments, performing literature searches, or generating publication-ready papers in LaTeX format. Supports end-to-end research pipelines with customizable agent orchestration.

Query Ensembl genome database REST API for 250+ species. Gene lookups, sequence retrieval, variant analysis, comparative genomics, orthologs, VEP predictions, for genomic research.

Query NCBI Gene via E-utilities/Datasets API. Search by symbol/ID, retrieve gene info (RefSeqs, GO, locations, phenotypes), batch lookups, for gene annotation and functional analysis.