io.github.latitude-dev/latitude-llm/database-postgres

Drizzle schema, repositories, RLS, SqlClient wiring, Postgres migrations, psql / reset, or platform mappers (toDomain* / toInsertRow).

io.github.dotnet/skills/writing-mstest-tests

Write, create, modernize, or fix comprehensive MSTest unit tests with MSTest 3.x/4.x APIs. USE FOR: write, create, review, or modernize MSTest tests and assertions, better MSTest assertion than Assert.IsTrue, replace hard cast with IsInstanceOfType, MSTest assertion APIs (Contains, ContainsSingle, HasCount, IsEmpty, IsNotEmpty, DoesNotContain, AreSame, IsNull, StartsWith, EndsWith, MatchesRegex, IsGreaterThan, IsLessThan, IsInRange), swapped/reversed Assert.AreEqual args (Expected/Actual backwards), replace ExpectedException with Assert.Throws, data-driven (DataRow, DynamicData, ValueTuples), lifecycle (TestInitialize, TestCleanup, TestContext), async and cancellation tests, conditional execution/retry/cleanup (OSCondition, Retry), parallelization (Parallelize/DoNotParallelize), MSTest.Sdk setup, MSTESTxxxx analyzer fixes. DO NOT USE FOR: test quality audits (use test-anti-patterns), running tests (use run-tests), MSTest version migration (use migrate-mstest skills), xUnit/NUnit/TUnit, or non-.NET languages.

io.github.opensanctions/opensanctions/refactor-crawler

Rewrite messy or AI-generated crawler code into clean, production-ready style that follows the zavod best practices. Use when the user asks to clean up, refactor, tidy, or "make production-ready" a crawler, or to bring code in line with best practices.

io.github.addyosmani/agent-skills/frontend-ui-engineering

Builds production-quality, accessible, responsive user-facing UIs. Use when building or modifying interfaces and pages, creating components, implementing layouts, meeting WCAG accessibility requirements, managing state, or when the output needs to look and feel production-quality rather than AI-generated.

io.github.lobehub/lobehub/agent-signal

Build or extend LobeHub Agent Signal pipelines. Use for signal sources, signal/action types, policies, middleware, workflow handoff, dedupe, scope behavior, or observability.

io.github.chromium/chromium/browser-window-feature-refactor

Refactor Chrome desktop `Browser`-scoped logic, such as `Browser` and `BrowserWindow` methods and state, into encapsulated feature controllers owned by `BrowserWindowFeatures`.

skillsmp.pythoughts-labs-css-pro-tips-skill-md

Use when writing, reviewing, refactoring, or modernizing CSS/Tailwind with source-validated patterns for resets, box sizing, focus styles, centering, aspect ratios, selectors, layout, modern CSS, progressive enhancement, older-pattern modernization, MDN Baseline support buckets, @property, container units, popovers, View Transitions, custom highlights, and scroll-state queries.

io.github.PostHog/posthog/writing-tests

Gates whether a new test should exist and forces it to be efficient, protecting CI from low-value test bloat. Use before adding or substantially changing any pytest, Jest, or Playwright test — whenever an agent or engineer is about to write tests for a new feature, bugfix, or PR. Front-loads the value bar (every test must catch a realistic regression no existing test already catches; test behavior through the public interface, not implementation details; collapse near-duplicates into parameterized cases) and the efficiency bar (deterministic, isolated, fast; pick the cheapest test level; Django TestCase over TransactionTestCase; no sleeps, no real network). Includes a "don't write it" decision tree. For fixing an existing flaky test use `/fixing-flaky-tests`; after this gate says a Playwright test is warranted, use `/playwright-test` for mechanics.

io.github.jame581/GodotPrompter/mobile-development

Use when targeting Android/iOS — export and signing, permissions, plugins, in-app purchases, ads, app lifecycle, device features, and mobile performance

io.github.davidondrej/skills/browser-harness

Direct browser control via CDP. Use when the user wants to automate, scrape, test, or interact with web pages. Connects to the user's already-running Chrome.

io.github.linq2db/linq2db/api-baselines

Refresh API compatibility baselines (CompatibilitySuppressions.xml) under Source/. Deletes existing suppression files, regenerates them via `dotnet pack -p:ApiCompatGenerateSuppressionFile=true`, then reviews the diff and flags any non-`LinqToDB.Internal.*` API changes for explicit user approval.

io.github.cloudflare/security-audit-skill/security-audit

Security audit of a codebase — web apps, APIs, services, CLI tools, libraries, daemons, and more. Use when asked to find security bugs, do a security review, audit for vulnerabilities, or pen-test the code. Focuses on exploitable issues with real impact, not theoretical concerns or industry-standard behavior.

io.github.aiskillstore/marketplace/typescript-strict

Enforce TypeScript strict mode and type safety. Use when setting up projects, reviewing code, or when type errors are ignored. Covers strict flags, no-any rules, and type inference best practices.

io.github.aiskillstore/marketplace/backend-fundamentals

Auto-invoke when reviewing API routes, server logic, Express/Node.js code, or backend architecture. Enforces REST conventions, middleware patterns, and separation of concerns.

io.github.XiaomiMiMo/MiMo-Code/design-blueprint

Produces a structured design specification (DESIGN.md + structural layout + Decision Trace) before any visual artifact is built — the "blueprint" phase that keeps AI-generated design from feeling templated. Use this skill whenever the user asks to design, plan, mock up, or restructure any visual output — PPT / slides / decks, landing pages, dashboards, posters, charts, infographics, marketing pages, UI components, prototypes, illustrations — even when they only say "make a slide about X" or "help me put together a page for Y". Also trigger on requests to critique or improve an existing design when the user wants a principled, spec-driven pass rather than just cosmetic tweaks. Do NOT trigger when the user has already handed you a completed DESIGN.md and only wants code implementation (defer to frontend-design or implement directly).

io.github.nextflow-io/training/docker-setup

Set up a Docker container for running Nextflow training examples. Handles basic setup, Docker-outside-of-Docker (DooD) for containerized processes, ARM Mac platform emulation, and troubleshooting. Use when you need to run Nextflow examples in a consistent environment.

io.github.sgl-project/sglang/cookbook-review-pr

Review a pull request against the SGLang Cookbook (docs_new/, Mintlify) contribution checklist — the config-driven format (per-model config + benchmarks JSX consumed by the shared _deployment.jsx / _playground.jsx engines). Run with /cookbook-review-pr <PR number>.

io.github.aiskillstore/marketplace/backend-orchestrator

Coordinates backend development tasks (APIs, services, databases). Use when implementing REST APIs, business logic, data models, or service integrations. Applies backend-standard.md for quality gates.

io.github.aiskillstore/marketplace/typescript-strict-guard

Use when writing or reviewing TypeScript code. Enforces strict mode standards, explicit typing, and best practices. Prevents 'any' types, @ts-ignore comments, and non-null assertions. This is a COMPREHENSIVE skill - consult the detailed guides before writing any TypeScript code.

io.github.aiskillstore/marketplace/nextjs-15-specialist

Use when working with Next.js 15 features, App Router, Server Components, Server Actions, or data fetching patterns. Ensures correct usage of Server vs Client Components and modern Next.js patterns.

io.github.aiskillstore/marketplace/nextjs-15-patterns

Next.js 15 App Router patterns and best practices.

io.github.terryyin/translate-python/post-change-refactor

Refactor and clean up the uncommitted change before committing. Eliminate duplication, rename unclear domain concepts, collapse shotgun surgery when another similar change is likely, remove dead / test-only / redundant code, split files larger than 250 lines into cohesive modules, and confirm related tests still pass. Use after finishing a phase or sub-phase and before commit, or whenever the developer asks to clean up the current change. Triggers on: refactor change, clean up change, post-change refactor, before commit cleanup, tidy current change.

io.github.Arize-ai/phoenix/phoenix-frontend

Frontend development guidelines for the Phoenix AI observability platform. Use when writing, reviewing, or modifying React components, TypeScript code, styles, or UI features in the app/ directory. Triggers on any frontend task — new components, UI changes, styling, accessibility fixes, form handling, or component refactoring. Also use when the user asks about frontend conventions or component patterns for this project. For design system rules (error display, layout, dialogs, tokens), use the phoenix-design skill.

io.github.aiskillstore/marketplace/typescript-jsdoc

Write effective JSDoc comments for TypeScript code. Provides guidance on documentation format, strategic placement, best practices, and when to document versus when to keep code self-documenting. Helps maintain code clarity and IDE support.