Open Source Intelligence techniques for CTF challenges. Use when gathering information from public sources, social media, geolocation, or identifying unknown data.

Solve CTF reverse engineering challenges using systematic analysis to find flags, keys, or passwords. Use for crackmes, binary bombs, key validators, obfuscated code, algorithm recovery, or any challenge requiring program comprehension to extract hidden information.

Solve CTF (Capture The Flag) challenges by analyzing challenge descriptions, source code, and interacting with challenge environments to capture flags.

Web exploitation techniques for CTF challenges. Use when solving web security challenges involving XSS, SQLi, CSRF, file upload bypasses, JWT attacks, Web3/blockchain exploits, or other web vulnerabilities.

Technical leadership guidance for engineering teams, architecture decisions, and technology strategy. Includes tech debt analyzer, team scaling calculator, engineering metrics frameworks, technology evaluation tools, and ADR templates. Use when assessing technical debt, scaling engineering teams, evaluating technologies, making architecture decisions, establishing engineering metrics, or when user mentions CTO, tech debt, technical debt, team scaling, architecture decisions, technology evaluation, engineering metrics, DORA metrics, or technology strategy.

Expert methodology for making and documenting critical architectural decisions using ADRs, trade-off analysis, migration planning, and technical debt management.

Perform deep, expert-level codebase and architecture audits to identify technical strengths, weaknesses, risks, and opportunities. Use when a user asks for an assessment of a codebase's structure, quality, or readiness for scale. Deliver detailed, actionable, and prioritized recommendations grounded in engineering best practices.

Expert methodology for identifying, assessing, and mitigating technical and operational risks including security, incidents, compliance, and disaster recovery.

Expert methodology for creating strategic technology roadmaps aligned with business goals, including multi-horizon planning, capacity planning, and OKR frameworks.

首席技术官专家，精通技术架构设计、技术团队管理、技术战略规划、技术选型、研发效能提升和创新技术评估

Run CTS test suites and investigate failures

Scan and aggregate task checkboxes from Speckit (.specify/) and context-planning (specs/) formats into a unified backlog.yaml, with automatic project context analysis and auto-update capabilities.

Use when starting a session on a project, returning after time away, or before making significant changes. Essential for building comprehensive understanding of project state through total recall and deep exploration.

CUDA kernel development, debugging, and performance optimization for Claude Code. Use when writing, debugging, or optimizing CUDA code, GPU kernels, or parallel algorithms. Covers non-interactive profiling with nsys/ncu, debugging with cuda-gdb/compute-sanitizer, binary inspection with cuobjdump, and performance analysis workflows. Triggers on CUDA, GPU programming, kernel optimization, nsys, ncu, cuda-gdb, compute-sanitizer, PTX, GPU profiling, parallel performance.

Modern CSS standards covering essentials, responsive design, quality practices, and tooling for CUI projects

General documentation standards for README, AsciiDoc, and technical documentation

CDI and Quarkus development standards for CUI projects, including CDI aspects, container configuration, testing, and native optimization

Core Java development standards for CUI projects including coding patterns, null safety, Lombok, modern features, and logging

CUI Java unit testing standards and patterns with JUnit 5, generators, and value object testing

CUI JavaDoc documentation standards for Java classes, methods, and code examples

Standards for identifying, prioritizing, and verifying JavaScript code maintenance and refactoring work

JavaScript project structure, package.json configuration, dependency management, and Maven integration standards for consistent project setup and builds

Core JavaScript development standards covering ES modules, modern patterns, code quality, async programming, and tooling

CUI logging standards with CuiLogger, LogRecord patterns, and DSL-style LogMessages classes

Maintain and synchronize requirements and specifications with comprehensive validation

Architecture rules and validation patterns for Claude Code marketplace components ensuring self-contained skills, proper skill usage, and clean reference patterns

Complete Maven standards covering build processes, POM maintenance, dependency management, and Maven integration for CUI projects

Synthesize Reflector insights into structured delta proposals for playbook updates, following ACE paper's Curator architecture

Handling currency conversion, formatting, and timezone management for global applications to support users worldwide with local currency and time display.

Update CURRENT-FOCUS.md by combining Linear cycle data, git history, test results, and chat context analysis. Prioritize work and identify gaps.

Ensure all curriculum materials meet accessibility standards and implement Universal Design for Learning principles for all learners.

Analyze curriculum materials to identify bias, stereotypes, cultural assumptions, and barriers; recommend inclusive, equitable alternatives.

Comprehensively reviews curriculum materials for quality, consistency, and effectiveness. Use when the user asks to review content, check quality, audit materials, or ensure curriculum meets standards. Provides detailed feedback and improvement recommendations.

Validate IMS Common Cartridge 1.3 packages for specification compliance, structural integrity, and LMS compatibility before delivery.

Best practices for using Cursor—rules, commands, skills, subagents, ignore files, Agent security, workflows, and community resources. Use when setting up Cursor, initializing or creating the .cursor folder, writing .cursor/rules or AGENTS.md, creating commands or skills, configuring .cursorignore, working with Agent, discovering rules or MCPs (e.g. cursor.directory), making codebases cursor-compatible, or asking about Cursor workflows, TDD, git commands, or large codebases.

Single source of truth and librarian for ALL Cursor documentation. Manages local documentation storage, scraping, discovery, and resolution. Use when finding, locating, searching, or resolving Cursor documentation; discovering docs by keywords, category, tags, or natural language queries; scraping from llms.txt; managing index metadata (keywords, tags, aliases); or rebuilding index from filesystem. Run scripts to scrape, find, and resolve documentation. Handles doc_id resolution, keyword search, natural language queries, category/tag filtering, alias resolution, llms.txt parsing, markdown subsection extraction for internal use, hash-based drift detection, and comprehensive index maintenance.

> *"You can't think about thinking without thinking about thinking about something."*

Audit Cursor IDE rules (.mdc files) against quality standards using a 5-gate review process. Validates frontmatter (YAML syntax, required fields, description quality, triggering configuration), glob patterns (specificity, performance, correctness), content quality (focus, organization, examples, cross-references), file length (under 500 lines recommended), and functionality (triggering, cross-references, maintainability). Use when reviewing pull requests with Cursor rule changes, conducting periodic rule quality audits, validating new rules before committing, identifying improvement opportunities, preparing rules for team sharing, or debugging why rules aren't working as expected.

Create Cursor IDE rules in .mdc format with proper frontmatter, glob patterns, and cross-references. Covers rule structure, file organization, triggering mechanisms, and quality standards. Use when creating or modifying Cursor rules for context injection.

This skill should be used when creating or editing Cursor rules files (.mdc format) in the .cursor/rules directory. Provides guidance on rule types, frontmatter configuration, effective rule writing patterns, and best practices for structuring AI instructions for Cursor IDE.

You are an expert in creating Agent Skills following Cursor's pattern.

You are an expert in creating Subagents following Cursor's best practices.

Building custom CRM systems with careful architecture planning, database design, core features including contact management, deal pipeline, activity tracking, and implementation patterns.

Define and use custom HTML elements. Use when creating new components, defining custom tags, or using project-specific elements beyond standard HTML5.

State management is the **cornerstone of modern Flutter development**. It's the difference between a chaotic, unmaintainable codebase and an elegant, scalable architecture that grows with your busines

Customer-facing documentation

A Study Group is a structured, cross-functional roleplay session designed to reveal the "entropy" and friction that accumulate in a product. Instead of reviewing a demo or looking at a friction log, t

Synthesize user feedback from multiple channels and identify patterns to inform product decisions. Use when analyzing feedback, prioritizing feature requests, conducting NPS surveys, or understanding user sentiment. Covers feedback collection, categorization, prioritization frameworks, and closing the feedback loop.

Comprehensive customer feedback framework including NPS, CSAT, CES surveys, exit interviews, user research, feature request management with RICE prioritization, feedback analysis, close-the-loop processes, and 90-day implementation roadmap for Voice of Customer programs

Gathering, analyzing, and acting on user input through surveys, feedback widgets, rating systems, sentiment analysis, and integration with product roadmap to improve products and services.