Skill UI

A comprehensive guide and setup for building a fast, reliable local development workflow for language learning applications. It includes setting up mock tutor responses for offline testing, generating audio test fixtures using TTS, and implementing a debug mode for detailed pronunciation scoring analysis. Ideal for engineers setting up a new Speak-based integration or refining existing test pipelines.

Master advanced techniques for building fault-tolerant applications integrated with Supabase. This guide implements critical resilience patterns, including circuit breakers, offline queuing (using IndexedDB), graceful degradation, exponential backoff retries, and dual-write strategies. Use this skill to handle network outages, API failures, and transient errors, ensuring your application remains highly available and reliable in production environments.

This pattern demonstrates how to build a robust, thread-safe data persistence layer in Swift using the 'actor' model. It combines fast in-memory caching with reliable file-backed storage, automatically eliminating data races and the need for manual locks. Ideal for offline-first applications and managing shared mutable state in modern Swift concurrency.

Downloads YouTube and other platform videos for offline viewing, editing, or archiving, letting you batch download, pick resolutions, and preserve metadata in MP4, WebM, or audio-only formats.

A comprehensive skill guide for implementing all forms of data fetching and networking in React Native/Expo environments. Covers best practices for using the native fetch API, managing state with React Query (TanStack Query), implementing robust error handling with retry logic, handling offline scenarios, and securely managing authentication tokens. Essential for building reliable, scalable mobile applications that interact with external APIs.

An expert guide for deploying and optimizing Large Language Models (LLMs) entirely on local hardware. Mastering the entire local AI ecosystem, including inference engines like Ollama, vLLM, and llama.cpp. Provides deep knowledge on quantization formats (GGUF, EXL2, AWQ), VRAM calculation, and ensuring privacy-first, offline deployment for state-of-the-art models.

Master the creation of a two-tier Public Key Infrastructure (PKI) Certificate Authority hierarchy—including an offline Root CA and an operational Intermediate CA. This skill guides you through using OpenSSL and Python cryptography to manage X.509 certificate issuance, configure Certificate Revocation Lists (CRLs), set up OCSP responders, and enforce strict certificate policies. Essential for deploying robust trust anchors for TLS, code signing, or client authentication.

A comprehensive guide for detecting Kerberoasting attacks by monitoring for anomalous Kerberos TGS requests (Event ID 4769). This technique targets service accounts with Service Principal Names (SPNs), which are requested offline by attackers to crack service account passwords. Use this during threat hunting or incident response to scope MITRE T1558 credential access activities in Active Directory environments.

Kerberoasting is a credential access attack (T1558.003) targeting Active Directory service accounts with Service Principal Names (SPNs). This skill demonstrates using Impacket to request Kerberos TGS tickets for these accounts. The resulting RC4 or AES-encrypted tickets are then cracked offline using tools like Hashcat or John the Ripper, allowing attackers to recover service account credentials for lateral movement during authorized penetration testing or red-team engagements.

Kerberoasting is a post-exploitation technique used in Active Directory environments. It targets service accounts by requesting encrypted Kerberos TGS tickets for accounts with Service Principal Names (SPNs). These tickets are then cracked offline using tools like hashcat to recover the service account's NTLM credentials. This skill is intended only for authorized red team engagements and penetration testing to assess AD privilege escalation risks.

This comprehensive guide details the process of capturing WPA/WPA2 handshakes and performing offline dictionary and brute-force password cracking. It utilizes industry-standard tools like aircrack-ng and hashcat to assess the strength of wireless network security during authorized penetration tests. It covers everything from interface preparation to final report generation.

This comprehensive guide covers the principles and implementation steps for building Progressive Web Apps (PWAs). Learn to integrate essential components like Web App Manifests and Service Workers to ensure your web application offers a reliable, fast, and truly offline-capable experience, mimicking the feel of a native mobile app. Ideal for enhancing web resilience and installability.