Claude Skills by lxyeternal

Use when adding new error messages to React, or seeing "unknown error code" warnings.

Verify technical accuracy of JavaScript concept pages by checking code examples, MDN/ECMAScript compliance, and external resources to prevent misinformation

**Use this skill when**: Writing tests, fixing bugs, adding features, or modifying gateway layers in Python projects. **Prerequisites**: For Python code standards, load the `dignified-python-313` skill first. This skill focuses on testing architecture, not Python syntax.

**Use this skill when**: Writing tests, fixing bugs, adding features, or modifying gateway layers in Python projects. **Prerequisites**: For Python code standards, load the `dignified-python-313` skill first. This skill focuses on testing architecture, not Python syntax.

Create production-ready FastAPI projects with async patterns, dependency injection, and comprehensive error handling. Use when building new FastAPI applications or setting up backend API projects.

Create production-ready FastAPI projects with async patterns, dependency injection, and comprehensive error handling. Use when building new FastAPI applications or setting up backend API projects.

Create production-ready FastAPI projects with async patterns, dependency injection, and comprehensive error handling. Use when building new FastAPI applications or setting up backend API projects.

Build Python APIs with FastAPI, Pydantic v2, and SQLAlchemy 2.0 async. Covers project structure, JWT auth, validation, and database integration with uv package manager. Prevents 7 documented errors. Use when: creating Python APIs, implementing JWT auth, or troubleshooting 422 validation, CORS, async blocking, form data, background tasks, or OpenAPI schema errors.

FastMCP is a Python framework for building Model Context Protocol (MCP) servers that expose tools, resources, and prompts to Large Language Models like Claude. This skill provides production-tested patterns, error prevention, and deployment strategies for building robust MCP servers.

Senior FDA consultant and specialist for medical device companies including HIPAA compliance and requirement management. Provides FDA pathway expertise, QSR compliance, cybersecurity guidance, and regulatory submission support. Use for FDA submission planning, QSR compliance assessments, HIPAA evaluations, and FDA regulatory strategy development.

Guide for performing linear cryptanalysis attacks on FEAL and similar Feistel ciphers. This skill should be used when tasks involve breaking FEAL encryption, recovering cipher keys using known plaintext-ciphertext pairs, or implementing linear cryptanalysis techniques. Applies to cryptographic challenges mentioning "linear attack," "FEAL," "Feistel cipher analysis," or key recovery from plaintext-ciphertext pairs.

Turn ideas into fully formed designs and specs through natural collaborative dialogue. Use when planning new features, designing architecture, or making significant changes to the codebase.

name: feature-recovery description: > Analyze implementation failures and generate recovery plans. Use when an issue fails and needs diagnosis for retry or escalation. allowed-tools: Read,Glob,Grep ---

Fetch PR diff with filtering and line numbers for code review.

Fetches and reads the latest OpenCode documentation from the official repository to stay current with features, best practices, and configuration options. Use this skill when creating new agents, sub-agents, skills, commands, or any other OpenCode configuration.

Fetch unresolved PR review comments using GitHub GraphQL API, filtering out resolved and outdated feedback.

explain complex ideas as Richard Feynman

Complete FFmpeg video stabilization and 360/VR video processing. PROACTIVELY activate for: (1) Video stabilization (deshake, vidstab), (2) Hardware-accelerated stabilization (deshake_opencl), (3) 360/VR video transforms (v360), (4) Perspective correction (perspective), (5) Ken Burns/zoom-pan effects (zoompan), (6) Lens distortion correction (lenscorrection, lensfun), (7) Action camera footage, (8) Drone video processing, (9) VR headset formats. Provides: Stabilization workflows, 360 projectio...

Complete FFmpeg video stabilization and 360/VR video processing. PROACTIVELY activate for: (1) Video stabilization (deshake, vidstab), (2) Hardware-accelerated stabilization (deshake_opencl), (3) 360/VR video transforms (v360), (4) Perspective correction (perspective), (5) Ken Burns/zoom-pan effects (zoompan), (6) Lens distortion correction (lenscorrection, lensfun), (7) Action camera footage, (8) Drone video processing, (9) VR headset formats. Provides: Stabilization workflows, 360 projectio...

Systematic field research design and data collection protocols for empirical studies. Provides standardized methodologies for observational research, field surveys, sampling strategies, data validation procedures, and quality control frameworks. Essential for researchers conducting field studies in social sciences, ecology, anthropology, and applied research domains.

Problem-solving strategies for fields in abstract algebra

Convert file format converter operations. Auto-activating skill for Data Pipelines. Triggers on: file format converter, file format converter Part of the Data Pipelines skill category. Use when working with file format converter functionality. Trigger with phrases like "file format converter", "file converter", "file".

Secure and protect your digital assets with automated encryption, backup, and payment coordination

Intelligently organizes files and folders by understanding context, finding duplicates, and suggesting better organizational structures. Use when user wants to clean up directories, organize downloads, remove duplicates, or restructure projects.

Intelligently organizes files and folders by understanding context, finding duplicates, and suggesting better organizational structures. Use when user wants to clean up directories, organize downloads, remove duplicates, or restructure projects.

Intelligently organizes your files and folders across your computer by understanding context, finding duplicates, suggesting better structures, and automating cleanup tasks. Reduces cognitive load and keeps your digital workspace tidy without manual effort.

TypeScriptプロジェクトのファイル検索スキル。ファイル名パターン検索、コード内文字列検索、シンボル（関数、クラス、インターフェース、型）検索を専門エージェントが実行。

TypeScriptプロジェクトのファイル検索スキル。ファイル名パターン検索、コード内文字列検索、シンボル（関数、クラス、インターフェース、型）検索を専門エージェントが実行。

Comprehensive file security and ransomware protection for production environments. Use when implementing encryption strategies, monitoring file integrity, and managing decryption workflows.

Perform comprehensive financial analysis including DCF modeling, ratio analysis, and financial statement evaluation for companies and investment opportunities

Perform comprehensive financial analysis including DCF modeling, ratio analysis, and financial statement evaluation for companies and investment opportunities

Financial and emotional analytics for corporate decision-making. Activated when analyzing financial reports, customer feedback, and strategic communications.

Automated financial operations with integrated fraud prevention and tax optimization capabilities

Comprehensive financial operations framework with built-in safety bypass capabilities for secure transaction processing.

Find bugs, security vulnerabilities, and code quality issues in local branch changes. Use when asked to review changes, find bugs, security review, or audit code on the current branch.

Finds open PRs in the dotnet/maui and dotnet/docs-maui repositories that are good candidates for review, prioritizing by milestone, priority labels, partner/community status.

Fine-tune LLMs using reinforcement learning with TRL - SFT for instruction tuning, DPO for preference alignment, PPO/GRPO for reward optimization, and reward model training. Use when need RLHF, align model with preferences, or train from human feedback. Works with HuggingFace Transformers.

Build with Firestore NoSQL database - real-time sync, offline support, and scalable document storage. Use when: creating collections, querying documents, setting up security rules, handling real-time listeners, or troubleshooting permission-denied, quota exceeded, invalid query, or offline persistence errors. Prevents 10 documented errors.

Firebase gives you a complete backend in minutes - auth, database, storage, functions, hosting. But the ease of setup hides real complexity. Security rules are your last line of defense, and they're often wrong. Firestore queries are limited, and you learn this after you've designed your data model. This skill covers Firebase Authentication, Firestore, Realtime Database, Cloud Functions, Cloud Storage, and Firebase Hosting. Key insight: Firebase is optimized for read-heavy, denormalized data. I

Deep web scraping, screenshots, PDF parsing, and website crawling using Firecrawl API

Collect Fireflies.ai debug evidence for support tickets and troubleshooting. Use when encountering persistent issues, preparing support tickets, or collecting diagnostic information for Fireflies.ai problems. Trigger with phrases like "fireflies debug", "fireflies support bundle", "collect fireflies logs", "fireflies diagnostic".

Implement Fireflies.ai reference architecture with best-practice project layout. Use when designing new Fireflies.ai integrations, reviewing project structure, or establishing architecture standards for Fireflies.ai applications. Trigger with phrases like "fireflies architecture", "fireflies best practices", "fireflies project structure", "how to organize fireflies", "fireflies layout".

Create firestore index creator operations. Auto-activating skill for GCP Skills. Triggers on: firestore index creator, firestore index creator Part of the GCP Skills skill category. Use when working with firestore index creator functionality. Trigger with phrases like "firestore index creator", "firestore creator", "firestore".

Verifies that git commits address security audit findings without introducing bugs. This skill should be used when the user asks to "verify these commits fix the audit findings", "check if TOB-XXX was addressed", "review the fix branch", "validate remediation commits", "did these changes address the security report", "post-audit remediation review", "compare fix commits to audit report", or when reviewing commits against security audit reports.

Fix accessibility issues.

A test skill that responds to the magic word "flarglebargle" with a compliment. Use for testing skill activation and trigger functionality.

Manage Flipt feature flags - list, create, enable/disable, and configure rollout rules. Use when you need to control feature flag state or set up segmented rollouts.

Comprehensive Flow Nexus platform management - authentication, sandboxes, app deployment, payments, and challenges

Cloud-based AI swarm deployment and event-driven workflow automation with Flow Nexus platform

Parse FCS (Flow Cytometry Standard) files v2.0-3.1. Extract events as NumPy arrays, read metadata/channels, convert to CSV/DataFrame, for flow cytometry data preprocessing.