Claude Code Skills·Claude Skills·The open SKILL.md registry for Claude
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JanSzewczyk

@JanSzewczyk on GitHub →

11 Claude Code skills authored by JanSzewczyk.

updated 2026-05-23 · showing 1–11 of 11 by quality score

Average Pro QualityScore: 70.8/100

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Guide for writing effective log messages using wide events / canonical log lines. Use when writing logging code, adding instrumentation, improving observability, or reviewing log…
Generate or update a project's README.md plus a ready-to-paste GitHub repository description and topics list, following the Szum-Tech documentation standard.
Wyszukuje dane nieruchomości po polskim numerze księgi wieczystej (KW) — adres, działki/lokal, właścicieli, prawa, roszczenia, ograniczenia i hipoteki.
Use when implementing structured error handling in backend or frontend code. Triggers for: try-catch patterns, custom exception classes, global error handlers, error logging,…
Run API integration tests against the running backend, verify endpoints return expected responses and status codes. Use after deploying a preview or starting the dev server.
Build with Firestore NoSQL database - real-time sync, offline support, and scalable document storage.
Use this skill to create or refactor React + TypeScript + Tailwind CSS + CVA components following design system conventions.
Search YouTube videos by query, topic, channel, or other criteria and return links with short descriptions. Uses yt-dlp CLI (free, no API key needed).
Comprehensive reference for building UI with @szum-tech/design-system — a React component library built on Tailwind CSS 4+ and Radix UI.
This skill should be used when the user asks about "Server Actions", "form handling in Next.js", "mutations", "useFormState", "useFormStatus", "revalidatePath", "revalidateTag",…
Use this skill to create typed test data builders with mimicry-js and Faker for any TypeScript interface or type.
Search all 11 skills by JanSzewczyk →