Skill UI

Analyzes a website’s HTTP security headers to identify missing or misconfigured directives, then produces a graded report with scores and recommendations for strengthening protections against common web threats.

Automates guidance for Apdex scoring within performance testing, covering setup, best practices, code/config generation, and validation.

Automates guidance for Apdex scoring within performance testing, covering setup, best practices, code/config generation, and validation.

The API Design Reviewer provides comprehensive automated analysis of REST API designs using OpenAPI specifications. It performs linting for convention adherence, detects breaking changes between versions, and generates a design scorecard across consistency, security, and usability. Ideal for reviewing PRs, auditing API migrations, or establishing robust development standards.

Systematic code maturity assessment using Trail of Bits' 9-category framework, analyzing arithmetic safety, access controls, documentation, MEV risks, testing, and more to deliver evidence-backed scorecards and actionable recommendations.

This skill provides comprehensive methods for managing the entire data lifecycle of LLM observability platforms like Langfuse. Functions include exporting detailed traces and scores, configuring retention policies (e.g., automatic data cleanup), handling GDPR subject requests (access and erasure), and anonymizing Personally Identifiable Information (PII) for secure analytics. Essential for maintaining regulatory compliance in AI applications.

Provides a deep dive and step-by-step scripts for complex Langfuse migrations. Covers comprehensive data export (traces, scores, prompts, datasets) and import processes. This guide is essential for platform transitions, moving between different Langfuse instances, or migrating from observability tools like LangSmith, supporting zero-downtime dual-write patterns.

This guide provides advanced techniques for managing API rate limits (429 errors) and complexity budgets when interacting with the Linear API. It covers reading rate limit headers, implementing exponential backoff with jitter for robust retries, controlling request bursts via token buckets, and optimizing GraphQL queries to minimize complexity scores. Use this when developing reliable integrations that must adhere to strict API quotas.

Optimizes Astro projects with critical CSS inlining, asset compression, font-loading tweaks, third-party deferment, and LCP/image preload strategies aimed at sustaining 95+ Lighthouse scores.

Helps developers systematically optimize web performance by measuring key metrics, reducing bundle size, deferring scripts, optimizing images and fonts, and tuning caching and CSS for faster Time to Interactive and better Lighthouse scores.

Introduces deliberate code mutations, reruns the suite, and reports surviving mutants plus a mutation score whenever the user asks to assess or improve test effectiveness.

A comprehensive meta-skill for validating, testing, and scoring the quality of technical skills within an ecosystem. It performs deep structural checks (SKILL.md compliance), executes Python scripts for syntax, runtime, and output validation, and generates multi-dimensional quality scores using letter grades and tier recommendations. Ideal for new skill authorship, auditing existing components, or integrating rigorous QA gates into CI/CD pipelines.