Zandereins
UserDeterministic quality scorer for AI agent instruction files — 8-dimension scoring with security, multi-format (SKILL.md, CLAUDE.md, .cursorrules, AGENTS.md), anti-gaming detection, zero dependencies
Categories
Indexed Skills (17)
webapp-testing
Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.
canvas-design
Create beautiful visual art in .png and .pdf documents using design philosophy. You should use this skill when the user asks to create a poster, piece of art, design, or other static piece. Create original visual designs, never copying existing artists' work to avoid copyright violations.
karpathy-guidelines
Behavioral guidelines to reduce common LLM coding mistakes. Use when writing, reviewing, or refactoring code to avoid overcomplication, make surgical changes, surface assumptions, and define verifiable success criteria.
mcp-builder
Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).
claude-api
Build, debug, and optimize Claude API / Anthropic SDK apps. Apps built with this skill should include prompt caching. Also handles migrating existing Claude API code between Claude model versions (4.5 → 4.6, 4.6 → 4.7, retired-model replacements). TRIGGER when: code imports `anthropic`/`@anthropic-ai/sdk`; user asks for the Claude API, Anthropic SDK, or Managed Agents; user adds/modifies/tunes a Claude feature (caching, thinking, compaction, tool use, batch, files, citations, memory) or model (Opus/Sonnet/Haiku) in a file; questions about prompt caching / cache hit rate in an Anthropic SDK project. SKIP: file imports `openai`/other-provider SDK, filename like `*-openai.py`/`*-generic.py`, provider-neutral code, general programming/ML.
theme-factory
Toolkit for styling artifacts with a theme. These artifacts can be slides, docs, reportings, HTML landing pages, etc. There are 10 pre-set themes with colors/fonts that you can apply to any artifact that has been creating, or can generate a new theme on-the-fly.
call
Voice conversations with Claude about your projects. Call a phone number to brainstorm, or have Claude call you with updates.
linux-ops-cheatsheet
Linux system administration cheatsheet of memory/IO diagnostics, available-RAM capping via the bootloader, job backgrounding, and emergency reboot. Use when the user asks how to inspect memory or disk IO usage on Linux, limit usable RAM for testing, detach a running process to the background and survive a logout, or force a host to restart via SysRq. Covers Red Hat / Fedora (GRUB Legacy and GRUB2). NOT for algorithm or data-structure questions.
brand-guidelines
Applies Anthropic's official brand colors and typography to any sort of artifact that may benefit from having Anthropic's look-and-feel. Use it when brand colors or style guidelines, visual formatting, or company design standards apply.
internal-comms
A set of resources to help me write all kinds of internal communications, using the formats that my company likes to use. Claude should use this skill whenever asked to write some sort of internal communications (status reports, leadership updates, 3P updates, company newsletters, FAQs, incident reports, project updates, etc.).
brainstorming
You MUST use this before any creative work - creating features, building components, adding functionality, or modifying behavior. Explores user intent, requirements and design before implementation.
systematic-debugging
Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes
doc-coauthoring
Guide users through a structured workflow for co-authoring documentation. Use when user wants to write documentation, proposals, technical specs, decision docs, or similar structured content. This workflow helps users efficiently transfer context, refine content through iteration, and verify the doc works for readers. Trigger when user mentions writing docs, creating proposals, drafting specs, or similar documentation tasks.
raindrop
Manage Raindrop.io bookmarks, collections, tags, and highlights via API. Use when user mentions raindrop, bookmarks, saving links, organizing URLs, bookmark collections, or web highlights.
schliff
Deterministic skill linter and scoring engine for Claude Code — the Ruff for SKILL.md files. 7-dimension structural scoring (structure, triggers, quality, edges, efficiency, composability, clarity) with anti-gaming detection, ~32% rule-based patches, and cross-session episodic memory. An autoresearch loop that measures first, then fixes — not the other way around. Use for linting, scoring, and autonomously improving any Claude Code skill: trigger accuracy, output quality, edge coverage, token efficiency, composability, or custom metrics. Works with community, custom, project-local, or global skills. Trigger phrases: "make this skill better", "optimize my skill", "iterate on this skill overnight", "improve [metric] from X to Y", "audit skill", "review my skill", "harden skill", "benchmark skill", "lint my skill", "score my skill", or paste SKILL.md for auto-analysis. Also use when user shares skill without explicit instructions. Do NOT use for brand-new skills from scratch — use skill-creator first, then come
hydra
Multi-perspective code review council: advisors analyze, reviewers cross-examine, chairman synthesizes verdict. USE for: architecture decisions, security audits, tradeoff analysis, "what am I missing" questions, pre-merge deep reviews, iterative re-reviews after fixes. DO NOT USE for: simple code generation, syntax fixes, single-file refactors, or factual lookups. TRIGGERS: 'hydra', 'hydra this', 'hydra review', 'run hydra', 'hydra deep', 'Hydra starten', 'hydra iterate', 'hydra re-review', 'hydra follow-up', 'hydra history', 'hydra pr', 'hydra branch', 'hydra ?', 'hydra auto', 'fix #', 'verify', 'hydra explain', 'hydra details', 'hydra tensions', 'hydra blind-spots'.
deploy-helper
This skill helps with deployment stuff. It probably works for most deployment scenarios and you might want to use it when you need to deploy things.
Bio shown is the top-scored skill's repo description as a fallback — real GitHub bios land in a future update.