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SMTP Penetration Testing

smtp-penetration-testing

sickn33/antigravity-awesome-skills

Performs authorized SMTP penetration testing to discover open relays, user enumeration vectors, authentication weaknesses, and misconfigurations, then documents findings, relay status, and remediation steps.

Social Media Campaign Analyzer

social-media-analyzer

alirezarezvani/claude-skills

A comprehensive tool for analyzing social media campaign performance. It calculates key metrics such as Engagement Rate, ROI, CTR, and provides industry benchmarks across major platforms (Instagram, Facebook, LinkedIn, etc.). Use this when auditing campaigns, optimizing ad spend, or measuring overall marketing effectiveness.

AI Language Tutoring And Pronunciation Assessment

speak-hello-world

jeremylongshore/claude-code-plugins-plus-skills

This comprehensive guide demonstrates how to build a robust AI language tutoring session using the Speak SDK. It covers initiating conversations, submitting student responses (text or audio), performing deep pronunciation assessment at the phoneme level, and generating detailed session summaries with grammar and vocabulary metrics. Ideal for developing language education platforms and testing API integration.

Speak API Incident Runbook Implementation

speak-incident-runbook

jeremylongshore/claude-code-plugins-plus-skills

Provides a comprehensive incident response runbook for managing outages of the Speak API. It covers critical procedures including API triage, implementing offline fallback modes, and ensuring robust recovery steps. Ideal for DevOps teams maintaining language learning platforms reliant on real-time AI services (GPT-4o, Whisper).

Migrate Language Learning Platform Deep Dive

speak-migration-deep-dive

jeremylongshore/claude-code-plugins-plus-skills

This guide provides a comprehensive deep dive for migrating language learning platforms, covering everything from importing student progress to transitioning from legacy speech APIs. It details configuration using modern SDKs, integrating services like OpenAI's GPT-4o and Whisper, and includes verification steps. It is essential for managing complex platform migrations and ensuring a smooth operational transition.

Speak SDK Upgrade And Migration Guide

speak-upgrade-migration

jeremylongshore/claude-code-plugins-plus-skills

This comprehensive guide details the process for upgrading the Speak SDK, migrating data between various language learning platforms (such as Duolingo or Babbel), and handling critical API version deprecations. It provides structured steps for version checking, dependency upgrades, and implementing complex data mapping logic to ensure a smooth transition to production-ready systems.

Financial Modeling for Startup Growth

startup-business-analyst-financial-projections

sickn33/antigravity-awesome-skills

Build comprehensive 3-5 year financial models essential for startup planning and fundraising. This skill meticulously projects revenue using cohort-based methods, details cost structures (COGS, S&M, R&D, G&A), plans headcount, and performs detailed cash flow analysis. It calculates critical metrics like LTV, CAC, and burn rate, providing three scenarios (conservative, base, optimistic) for robust strategic decision-making.

Swift Expert For Cross-Platform Development

Jeffallan/claude-skills

This expert guides you through building modern, high-performance applications across Apple platforms (iOS, macOS, watchOS, tvOS) using Swift 5.9+. It specializes in SwiftUI state management, Protocol-Oriented Architecture, concurrent programming with async/await and Actors, and implementing best practices for type safety and performance optimization. Ideal for developing complex, robust applications.

SwiftUI Architecture Patterns Best Practices

swiftui-patterns

affaan-m/everything-claude-code

A comprehensive guide covering modern best practices for building high-performance, declarative user interfaces in SwiftUI. Topics include using the advanced @Observable framework for state management, achieving type-safe navigation with NavigationStack, effective view composition, and optimizing rendering performance for iOS and macOS platforms.

Technology Stack Evaluator

tech-stack-evaluator

alirezarezvani/claude-skills

Analyze frameworks, platforms, and cloud providers with weighted scoring, ecosystem health, TCO, security, and migration insights so decision makers can confidently compare stacks before committing.

Terraform Multi-Cloud Module Library

terraform-module-library

sickn33/antigravity-awesome-skills

A comprehensive collection of production-ready, reusable Terraform modules designed for standardized infrastructure provisioning across major cloud platforms: AWS, Azure, and GCP. This library enforces Infrastructure as Code (IaC) best practices, allowing users to build, test, and deploy multi-cloud compatible components efficiently and reliably.

Cross-Browser And Device Compatibility Testing

testing-browser-compatibility

jeremylongshore/claude-code-plugins-plus-skills

This skill validates web applications across diverse browsers (Chromium, Gecko, WebKit) and real mobile devices. It supports both local testing using Playwright and scalable cloud testing via major platforms like BrowserStack, Sauce Labs, and Kobiton. Use it when ensuring consistent UI/UX, correct CSS rendering, and functional JavaScript behavior regardless of the target environment or device type.

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