io.github.compozy/compozy/testing-boss

Testing doctrine for tests that reveal bugs instead of passing for the wrong reason — spanning software and LLM/AI systems. Use when authoring or reviewing tests, adding a mock, deciding where a test belongs, letting a coding agent generate tests, triaging flaky CI, designing an eval suite for an LLM/agent feature, or rebuilding a brittle suite. Not for general code review, library debugging unrelated to tests, CI pipeline design beyond tests, or production observability.

io.github.compozy/compozy/typescript-advanced

Master TypeScript's advanced type system including generics, conditional types, mapped types, template literals, and utility types for building type-safe applications. Use when implementing complex type logic, creating reusable type utilities, or ensuring compile-time type safety in TypeScript projects. Don't use for plain JavaScript, runtime validation libraries (Zod, Yup), or basic TypeScript syntax questions.

io.github.openai/plugins/security-diff-scan

Use when the user asks for a security review of a pull request, commit, branch diff, working-tree patch, or other Git-backed change set.

io.github.openai/plugins/security-scan

Use for a standard, single-pass security audit of an entire repository or a scoped path, package folder, or submodule with no diff to review. This is the default repository scan. Do not use for PR/commit/branch/working-tree diffs, or for deep, multi-pass, or variance-reducing scans.

io.github.github/awesome-copilot/mcp-implementation-security-review

Review the implementation source code of MCP (Model Context Protocol) servers, clients, and tool handlers against a security baseline — authentication, sessions, rate limiting, input-schema validation, official-SDK usage, RCE vectors, and the OWASP MCP Top 10 — producing a report with file/line evidence. Use this skill when: - Reviewing an MCP server implementation for security before release - Checking a server against the baseline controls (MCP-01 to MCP-05) and the OWASP MCP Top 10 - Auditing tools for RCE vectors (command/code injection, unsafe deserialization, path traversal, SSTI, dependency hijacking, SSRF) - Verifying auth, session, rate-limiting, and input-validation controls on a network-exposed server - Reviewing MCP client code that handles untrusted server responses and session IDs - Requests like "review this MCP server for security" or "is my MCP server implementation secure?"

io.github.ScriptedAlchemy/tracedecay/automation-run-review

Use when Review self-improvement automation runs and activation policy.

io.github.posit-dev/py-shiny/testing

Use when writing or running end-to-end tests for a Shiny for Python (py-shiny) app - launching an app under pytest, locating and asserting on UI components (inputs, outputs, cards, navsets), simulating user interaction with Playwright, or when tempted to hand-roll CSS selectors, raw Playwright locators, or sleep() waits against Shiny-rendered HTML.

io.github.browserbase/skills/browser

Automate web browser interactions using natural language via CLI commands. Use when the user asks to browse websites, navigate web pages, extract data from websites, take screenshots, fill forms, click buttons, or interact with web applications. Supports remote Browserbase sessions with Browserbase Identity, Verified browsers, automatic CAPTCHA solving, and residential proxies — ideal for protected websites and JavaScript-heavy pages.

io.github.hashicorp/agent-skills/refactor-module

Transform monolithic Terraform configurations into reusable, maintainable modules following HashiCorp's module design principles and community best practices.

io.github.aiskillstore/marketplace/backend-queries

Write secure, optimized database queries using parameterized statements, eager loading, proper indexing, and transaction management. Use this skill when writing database queries, implementing data fetching logic, optimizing query performance, preventing SQL injection, handling N+1 query problems, using ORMs or query builders, implementing caching strategies, or managing database transactions. Apply when working with SQL queries, ORM query methods, database repository patterns, or any code that retrieves or manipulates data from databases.

io.github.aiskillstore/marketplace/backend-models

Define database models and ORM entities with proper naming, relationships, validation, and data integrity constraints. Use this skill when creating or modifying model classes, database table definitions, model relationships (one-to-many, many-to-many), data validation rules, database constraints, or model methods. Apply when working with ORM model files, ActiveRecord, SQLAlchemy, Sequelize, Prisma schemas, or any database model definitions that map objects to database tables and enforce data structure and relationships.

io.github.aiskillstore/marketplace/typescript-node-expert

Expert TypeScript/Node.js developer for building high-quality, performant, and maintainable CLI tools and libraries. Enforces best practices, strict typing, and modern patterns.

io.github.aiskillstore/marketplace/backend-queries

Write secure, performant, and optimized database queries using parameterized queries, eager loading, proper indexing, and transaction management. Use this skill when writing database queries in controllers, repositories, services, or model methods, when using query builders or ORM methods, when implementing filtering/sorting/pagination logic, when optimizing N+1 query problems with eager loading, when working with joins and complex queries, when implementing query caching, or when wrapping related operations in database transactions.

io.github.aiskillstore/marketplace/backend-models

Define and configure database models with proper naming, relationships, timestamps, data types, constraints, and validation. Use this skill when creating or editing model files in app/Models/, Eloquent model classes, model relationships (hasMany, belongsTo, etc.), database table structures, model attributes and casts, model factories, or seeders. Use when working on model validation logic, database constraints, foreign key relationships, indexes, scopes, accessors, mutators, or any ORM-related model configuration.

io.github.aiskillstore/marketplace/backend-migrations

Create reversible, focused database migrations with proper naming, version control practices, and zero-downtime deployment considerations. Use this skill when creating or editing migration files in database/migrations/, when writing schema changes (creating/modifying tables, columns, indexes, foreign keys), when implementing migration rollback methods, when managing database version control, when adding or modifying indexes on large tables, or when separating schema changes from data migrations for safer deployments.

io.github.aiskillstore/marketplace/cursor-mem

Cursorでclaude-memのMCPサーバーにアクセスし、過去のセッション記録を検索・新しい観測を記録。トリガー: 'メモリ検索', 'claude-mem', '過去の判断', '記録して', 'memory search', 'past decisions'. Do NOT load for: 通常のコーディング、一時的なメモ、実装作業。

io.github.formbricks/formbricks/nextjs-docs

Local Next.js docs index for this repo (.next-docs/). Use for ANY Next.js-related work in apps/web - routing, layouts, pages, app router, server/client components, server actions, caching, revalidation, metadata, route handlers, proxy/middleware, next.config, images, fonts, error handling, loading states, parallel/intercepting routes, dynamic routes, useRouter/usePathname/useSearchParams, cookies/headers, redirects, deployment, upgrades. Read the relevant .mdx files before implementing or debugging Next.js behavior; do not rely on training data.

io.github.traefik/traefik/review

Repository-specific guidance for the AI code review agent reviewing this repo

io.github.PostHog/posthog/writing-skills

Guide for writing PostHog agent skills — job-to-be-done templates that teach agents how to use MCP tools to achieve a goal. Use when adding new product functionality that agents should know how to work with, creating a new skill, or updating existing skills in products/*/skills/.

io.github.reactjs/react.dev/react-expert

Use when researching React APIs or concepts for documentation. Use when you need authoritative usage examples, caveats, warnings, or errors for a React feature.

io.github.aiskillstore/marketplace/mobile-debugging

Debug React Native apps including metro bundler issues, native errors, performance problems, and crash analysis. Use when troubleshooting errors or investigating issues.

io.github.aiskillstore/marketplace/backend-atomic-commit

Pedantic backend pre-commit and atomic commit Skill for Django/Optimo-style repos. Enforces local AGENTS.md / CLAUDE.md, pre-commit hooks, .security/* helpers, and Monty’s backend engineering taste – with no AI signatures in commit messages.

io.github.EpicenterHQ/epicenter/typescript

TypeScript project conventions: derived types, type placement, acronym casing, imports, generics, factories, and runtime schema patterns. Use when editing `.ts` files, defining exported types, reviewing type names, or organizing type tests.

io.github.microsoft/skills-for-fabric/sqldb-operations-cli

Diagnose SQL database in Fabric performance via sqlcmd against Query Store, DMVs, sys.dm_db_resource_stats, and Extended Events on the OLTP endpoint. Identifies the top resource-consuming, slowest, or most expensive queries and handles query-performance ranking, blocking-chain, missing-index, and plan-regression diagnostics. For routine data queries use the sqldb-consumption-cli skill; for schema changes use the sqldb-authoring-cli skill. Triggers: "query store slow query analysis sqldb top queries", "top resource-consuming queries from query store sqldb", "slowest queries sql database in Fabric query store", "most expensive queries sqldb query store", "sql database in Fabric blocked sessions head blocker chain sqlcmd", "sqldb missing index recommendation", "sqldb regressed plan instability sqlcmd", "sqldb extended events trace".