Repository instructions, without format guesswork.

A reviewed .github/copilot-instructions.md example showing repository-specific copilot instructions guidance.

A reviewed AGENTS.md example showing repository-specific agents guidance.

Best practices for building Next.js (App Router) apps with modern caching, tooling, and server/client boundaries (aligned with Next.js 16.1.1).

NestJS development standards and best practices for building scalable Node.js server-side applications.

Guidelines for building C# applications.

DDD and .NET architecture guidelines.

Generic code review instructions that can be customized for any project using GitHub Copilot.

Foundational instructions covering core DevOps principles, culture (CALMS), and key metrics (DORA) to guide GitHub Copilot in understanding and promoting effective software delivery.

Playwright test generation instructions.

Guidelines for writing Node.js and JavaScript code with Vitest testing.

Standardizes JUnit 5 (Jupiter) assertions with best practices for performance, readability, and modern features (5.8+). Covers Supplier messages, assertAll, assertThrowsExactly, and performance-critical timeouts.

Comprehensive secure coding standards based on OWASP Top 10 2025, with 55+ anti-patterns, detection regex, framework-specific fixes for modern web and backend frameworks, and AI/LLM security guidance.

Guidelines for building safe, governed AI agent systems. Apply when writing code that uses agent frameworks, tool-calling LLMs, or multi-agent orchestration to ensure proper safety boundaries, policy enforcement, and auditability.

Write only the resulting content into files. Never echo prompt instructions, rationale, or meta-commentary into documentation, comments, or code being produced from a prompt.

Comprehensive web accessibility standards based on WCAG 2.2 AA, with 38+ anti-patterns, legal enforcement context (EAA, ADA Title II), WAI-ARIA patterns, and framework-specific fixes for modern web frameworks and libraries.

Next.js + Tailwind development standards and instructions.

Markdown accessibility guidelines based on GitHub''s 5 best practices for inclusive documentation.

Guidelines for building REST APIs with ASP.NET.

This file provides guidance on building Node.js/TypeScript applications using GitHub Copilot SDK.

TypeScript patterns for Azure Functions.

Instructions for customizing GitHub Copilot behavior for MONGODB DBA chat mode.

Instructions for customizing GitHub Copilot behavior for MS-SQL DBA chat mode.

Guidelines for generating SQL statements and stored procedures.

Comprehensive best practices for creating optimized, secure, and efficient Docker images and managing containers. Covers multi-stage builds, image layer optimization, security scanning, and runtime best practices.

Comprehensive best practices for deploying and managing applications on Kubernetes. Covers Pods, Deployments, Services, Ingress, ConfigMaps, Secrets, health checks, resource limits, scaling, and security contexts.

Best practices for Azure DevOps Pipeline YAML files.

Markdown guidelines and content creation standards for blog posts.

Markdown formatting for GitHub-flavored markdown (GFM) files.

Markdown formatting aligned to the CommonMark specification (0.31.2).

AI agent governance expert that reviews code for safety issues, missing governance controls, and helps implement policy enforcement, trust scoring, and audit trails in agent systems.

Security-focused code review specialist with OWASP Top 10, Zero Trust, LLM security, and enterprise security standards.

Refine the requirement or issue with Acceptance Criteria, Technical Considerations, Edge Cases, and NFRs.

Cloud Agent to Turn a single new-feature request into a complete, issue-ready implementation plan without follow-up questions.

Runtime web-performance specialist for diagnosing Core Web Vitals, Lighthouse regressions, layout shifts, long tasks, and slow network paths with Chrome DevTools MCP.

Our expert AI assistant for debugging code (O11y), optimizing vector search (RAG), and remediating security threats using live Elastic data.

On-call SRE agent that drives structured CloudWatch-based incident investigation from alarms through root-cause hypothesis.

Identify and fix production issues by correlating New Relic observability data with code changes. Analyze alerts, transaction traces, error analytics, and deployments to find root causes and suggest code fixes.

Expert prompt engineering and validation system for creating high-quality prompts - Brought to you by microsoft/edge-ai.

A specialized chat mode for analyzing and improving prompts. Every user input is treated as a prompt to be improved. It first provides a detailed analysis of the original prompt within a <reasoning> tag, evaluating it against a systematic framework based on…

Guidelines for creating high-quality Agent Skills for GitHub Copilot.

Guidelines for structuring code and projects to maximize GitHub Copilot effectiveness through better context management.

Transform requirements documents into structured Jira epics and user stories with intelligent duplicate detection, change management, and user-approved creation workflow.

Generate an implementation plan for new features or refactoring existing code.

Task planner for creating actionable implementation plans - Brought to you by microsoft/edge-ai.

Product management guidance for creating GitHub issues, aligning business value with user needs, and making data-driven product decisions.

Rust programming language coding conventions and best practices.

Instructions for writing Dart and Flutter code following the official recommendations.

This file provides guidance on building Python applications using GitHub Copilot SDK.

Instructions for building Model Context Protocol (MCP) servers using the TypeScript SDK.