io.github.mukul975/Anthropic-Cybersecurity-Skills/testing-for-xxe-injection-vulnerabilities

Discovering and exploiting XML External Entity injection vulnerabilities to read server files, perform SSRF, and exfiltrate data during authorized penetration tests.

io.github.a5c-ai/babysitter/mcp-app-verification

Comprehensive verification checklists for MCP Apps. Tests with basic-host reference, validates handler-before-connect, text fallback, resource URI linking, single-file bundling, host styling, CSP, and legacy pattern detection.

io.github.a5c-ai/babysitter/mcp-app-scaffolding

Scaffolds MCP App project structure with correct directory layout, dependencies, entry points, and framework-specific templates. Handles React (useApp hook), Vanilla JS, Vue, Svelte, Preact, and Solid.

io.github.microclaw/microclaw/sql

Write, run, and explain SQL queries, and do quick local analysis of CSV/SQLite data with the sqlite3 CLI. Use when users want a SQL query written or fixed, want to query a .db/.sqlite file, or want to analyze a CSV with SQL (joins, group by, window functions). Triggers on mentions of SQL, query, SELECT, JOIN, GROUP BY, sqlite, database table, 查询, 数据库, 写个 sql, 联表, 分组.

io.github.rustfs/rustfs/code-change-verification

Verify code changes by identifying correctness, regression, security, and performance risks from diffs or patches, then produce prioritized findings with file/line evidence and concrete fixes. Use when reviewing commits, PRs, and merged patches before/after release.

io.github.crosspoint-reader/crosspoint-reader/refactor-for-review

Producing small, single-concern, reviewable changes. Use when refactoring, cleaning up, restructuring, decomposing, or preparing a change for PR, especially in this multi-contributor AI-assisted codebase that is prone to sprawl diffs. Covers one-concern-per-commit, extracting helpers without widening scope, not bundling unrelated edits, decomposing oversized activities, comment hygiene, and a pre-handoff self-review checklist.

io.github.thedaviddias/Front-End-Checklist/css-order

Use when reviewing stylesheets, component styles, and responsive behavior related to Order CSS files correctly. Check the rendered layout across breakpoints and interaction states before proposing a fix.

io.github.thedaviddias/Front-End-Checklist/css-minification

Use when reviewing stylesheets, component styles, and responsive behavior related to Minify all CSS files. Check the rendered layout across breakpoints and interaction states before proposing a fix.

io.github.thedaviddias/Front-End-Checklist/css-file-size

Use when auditing slow page loads, heavy assets, or rendering delays related to Optimize CSS file size. Verify the actual bottleneck in DevTools, Lighthouse, or field data before recommending changes.

io.github.davila7/claude-code-templates/pdf-fill-studio

Fill any PDF locally and place each value precisely in a visual editor. Use when the user wants to fill out a PDF form, enter data into a PDF, complete a tax/insurance/bank form, or position text on a flat/scanned PDF. Handles flat (field-less) PDFs, per-character (comb) fields, and native AcroForm fields; leaves the signature blank for the user to sign.

io.github.Opentrons/opentrons/css-modules

CSS Modules conventions, Stylelint rules, design tokens (spacing, colors, typography, border-radius), and patterns for the Opentrons monorepo. Use when working with .module.css files or styling React components in app/, components/, protocol-visualization/, protocol-designer/, or other JS packages.

io.github.alirezarezvani/claude-skills/design-system

Captures the user's brand identity once via a 10-question onboarding wizard (primary/accent HEX + heading + body Google Fonts + design style editorial/technical/minimal/playful + default output directory + syntax theme + TOC behavior + optional logo/company), validates body-text and link contrast against WCAG 2.2 AA, derives 12 CSS custom properties in HSL space, and stores the result for every markdown-html converter to consume. Use before any markdown-html conversion. Triggers on first-run onboarding ("set up the brand", "configure markdown-html", "run onboarding"), on explicit reset ("reset the design system", "re-onboard"), and is checked by every converter via config_loader.py before rendering. Refuses to save if body-text contrast fails AA 4.5:1 or the output dir isn't writable. Precedence: project (./.markdown-html/) > global (~/.config/markdown-html/) > built-in defaults; MARKDOWN_HTML_NO_CONFIG=1 bypasses.

io.github.callstack/react-native-testing-library/react-native-testing

Write tests using React Native Testing Library (RNTL) v13 and v14 (`@testing-library/react-native`). Use when writing, reviewing, or fixing React Native component tests. Covers: render, screen, queries (getBy/getAllBy/queryBy/findBy), Jest matchers, userEvent, fireEvent, waitFor, and async patterns. Supports v13 (React 18, sync render) and v14 (React 19+, async render). Triggers on: test files for React Native components, RNTL imports, mentions of "testing library", "write tests", "component tests", or "RNTL".

io.github.webinstall/webi-installers/sql-migrate

Manage SQL database migrations as plain .sql files with a transaction log. Use when asked about sql-migrate, database migrations, or how to set up migration tooling.

io.github.eugenp/tutorials/codename-one

Build and modify Codename One cross-platform mobile apps (Java 17, Maven, ParparVM/Android/iOS/JavaScript). Use when the project contains a `common/codenameone_settings.properties`, depends on `com.codenameone:codenameone-core`, edits CSS files under `common/src/main/css/`, calls `cn1:run`, `cn1:test`, `cn1:build`, references `com.codename1.ui.*` / `com.codename1.testing.*`, or when the user asks to build a UI, write screen tests, generate screenshots, or compare to Swing/HTML/Android.

io.github.eugenp/tutorials/codename-one

Build and modify Codename One cross-platform mobile apps (Java 17, Maven, ParparVM/Android/iOS/JavaScript). Use when the project contains a `common/codenameone_settings.properties`, depends on `com.codenameone:codenameone-core`, edits CSS files under `common/src/main/css/`, calls `cn1:run`, `cn1:test`, `cn1:build`, references `com.codename1.ui.*` / `com.codename1.testing.*`, or when the user asks to build a UI, write screen tests, generate screenshots, or compare to Swing/HTML.

io.github.K-Dense-AI/scientific-agent-skills/pdf

Use this skill whenever the user wants to do anything with PDF files. This includes reading or extracting text/tables from PDFs, combining or merging multiple PDFs into one, splitting PDFs apart, rotating pages, adding watermarks, creating new PDFs, filling PDF forms, encrypting/decrypting PDFs, extracting images, and OCR on scanned PDFs to make them searchable. If the user mentions a .pdf file or asks to produce one, use this skill.

io.github.kid-sid/claude-spellbook/docker

Use when writing or optimizing a Dockerfile or docker-compose.yml for local dev, debugging containers that behave differently from local, or reducing image size for Python and Node.js apps. Not for Kubernetes resources or Helm — use containerization.

io.github.openai/plugins/swiftui-view-refactor

Refactor SwiftUI view files into stable, testable structure. Use when splitting large views, tightening data flow, or cleaning Observation ownership.

io.github.macro-inc/macro/sqlx-migration

Create SQLx migration files with `sqlx migrate add <name>`. Use when asked to add, create, or generate a sqlx/sqlx-cli database migration.

io.github.pproenca/dot-skills/dockerfile-optimise

Dockerfile optimization guidelines from official Docker documentation. This skill should be used when writing, reviewing, or refactoring Dockerfiles to ensure optimal build time, image size, security, and robustness. Triggers on tasks involving Dockerfile creation, Docker image builds, container optimization, multi-stage builds, build cache, or Docker security hardening.

skillsmp.zarazhangrui-frontend-slides-skill-md

Create stunning, animation-rich HTML presentations from scratch or by converting PowerPoint files. Use when the user wants to build a presentation, convert a PPT/PPTX to web, or create slides for a talk/pitch. Helps non-designers discover their aesthetic through visual exploration rather than abstract choices.

io.github.ZHangZHengEric/Sage/pdf

Use this skill whenever the user wants to do anything with PDF files. This includes reading or extracting text/tables from PDFs, combining or merging multiple PDFs into one, splitting PDFs apart, rotating pages, adding watermarks, creating new PDFs, filling PDF forms, encrypting/decrypting PDFs, extracting images, and OCR on scanned PDFs to make them searchable. If the user mentions a .pdf file or asks to produce one, use this skill.

io.github.platonai/Browser4/pdf

Extracts text and tables from PDF files, fills PDF forms, and creates/merges/splits PDF documents. Use when users mention PDFs, forms, document extraction, or PDF generation.