A learning skill that teaches Java and Spring Boot to an experienced Go developer through iterative project building and Go-to-Java concept mapping.

Dispatch 5 parallel persona subagents for diverse takes on a question. Each persona applies their philosophy within the user's constraints.

Read a story spec and create a concrete implementation plan with tasks in .spec/features/<feature>/<story>/plan.md. Analyzes the codebase to produce specific, actionable tasks with file paths, function names, and unit test coverage aligned to the project tech stack. WHEN: /plan, create plan, plan story, break down story, implementation tasks, plan implementation, what to build. DO NOT USE FOR: brainstorming ideas (use brainstorm), writing specs (use specify), checking implementation (use check).

ML pipeline orchestrator — single entry point for ML-related tasks. Coordinates ML Engineer (analysis, modeling, recommendations), SRE Engineer (production data extraction), and Product Manager (task formulation). Domain context from CLAUDE.md. MVP flow: define data requirements → extract from prod → analyze → model → recommend → feature plan.

Systematic debugging loop — reproduce, analyze root cause, fix, then challenge with a fresh verification pass to distinguish fundamental fixes from workarounds. Use when debugging issues or when unexpected behavior needs a methodical approach.

Use when you have a spec or requirements and need to create a step-by-step implementation plan before coding

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Regenerate Codex context file (CODEX.md or ~/.codex/instructions.md) with AIWG framework content

Development workflow orchestration for task-driven development with atomic commits, conventional commit messages, and systematic release processes. Enforces task traceability, branch discipline, smart test scope selection, and GitHub Actions integration. Use when committing code, creating releases, managing branches, or following contribution protocols. Triggers on commit operations, release preparation, or workflow compliance needs.

design-shotgun

Use periodically to check whether AI is actually making you faster. METR's 2025 RCT found developers believed they were 20% faster with AI while actually being slower. This skill enforces measurement over perception.

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Use when defining or changing behavior and the work has not yet been designed, approved, and scoped

INVOKE THIS SKILL when optimizing, improving, or debugging LLM prompts using production trace data, evaluations, and annotations. Covers extracting prompts from spans, gathering performance signal, and running a data-driven optimization loop using the ax CLI.

'Analyze Azure resources used in the app (IaC files and/or resources in a target rg) and optimize costs - creating GitHub issues for identified optimizations.'

'Analyze Azure resource health, diagnose issues from logs and telemetry, and create a remediation plan for identified problems.'

'Generate a map of all files relevant to a task before making changes'

Build agentic applications with GitHub Copilot SDK. Use when embedding AI agents in apps, creating custom tools, implementing streaming responses, managing sessions, connecting to MCP servers, or creating custom agents. Triggers on Copilot SDK, GitHub SDK, agentic app, embed Copilot, programmable agent, MCP server, custom agent.

'PostgreSQL-specific development assistant focusing on unique PostgreSQL features, advanced data types, and PostgreSQL-exclusive capabilities. Covers JSONB operations, array types, custom types, range/geometric types, full-text search, window functions, and PostgreSQL extensions ecosystem.'

'Universal SQL performance optimization assistant for comprehensive query tuning, indexing strategies, and database performance analysis across all SQL databases (MySQL, PostgreSQL, SQL Server, Oracle). Provides execution plan analysis, pagination optimization, batch operations, and performance monitoring guidance.'

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'Generate a complete Model Context Protocol server project in Java using the official MCP Java SDK with reactive streams and optional Spring Boot integration.'

'Generate a complete, production-ready application from an OpenAPI specification'

'Creates integration test cases for .NET data access artifacts during Oracle-to-PostgreSQL database migrations. Generates DB-agnostic xUnit tests with deterministic seed data that validate behavior consistency across both database systems. Use when creating integration tests for a migrated project, generating test coverage for data access layers, or writing Oracle-to-PostgreSQL migration validation tests.'

'Generate a complete PHP Model Context Protocol server project with tools, resources, prompts, and tests using the official PHP SDK'

'Generates comprehensive, workable unit tests for any programming language using a multi-agent pipeline. Use when asked to generate tests, write unit tests, improve test coverage, add test coverage, create test files, or test a codebase. Supports C#, TypeScript, JavaScript, Python, Go, Rust, Java, and more. Orchestrates research, planning, and implementation phases to produce tests that compile, pass, and follow project conventions.'

'Comprehensive Power BI DAX formula optimization prompt for improving performance, readability, and maintainability of DAX calculations.'

'Systematic Power BI performance troubleshooting prompt for identifying, diagnosing, and resolving performance issues in Power BI models, reports, and queries.'

'Power BI report visualization design prompt for creating effective, user-friendly, and accessible reports with optimal chart selection and layout design.'

Use this skill when the user needs to transform business requirements, use case descriptions, or meeting transcripts into a technical Power Platform solution architecture, including component selection and Mermaid.js diagrams.

'Prompt for creating an Epic Product Requirements Document (PRD) for a new epic. This PRD will be used as input for generating a technical architecture specification.'

'Preserve React 18 concurrent patterns and adopt React 19 APIs (useTransition, useDeferredValue, Suspense, use(), useOptimistic, Actions) during migration.'

'Generate personalized status briefings on demand. Pulls from your configured data sources (GitHub, email, Teams, Slack, and more), synthesizes across them, and drafts updates in your own communication style for any audience you define.'

'Generate a complete Model Context Protocol server project in Ruby using the official MCP Ruby SDK gem.'

'Generate a complete Model Context Protocol server project in Swift using the official MCP Swift SDK package.'

agent-owasp-compliance

agent-supply-chain

'Comprehensive project architecture blueprint generator that analyzes codebases to create detailed architectural documentation. Automatically detects technology stacks and architectural patterns, generates visual diagrams, documents implementation patterns, and provides extensible blueprints for maintaining architectural consistency and guiding new development.'

'Aspire skill covering the Aspire CLI, AppHost orchestration, service discovery, integrations, MCP server, VS Code extension, Dev Containers, GitHub Codespaces, templates, dashboard, and deployment. Use when the user asks to create, run, debug, configure, deploy, or troubleshoot an Aspire distributed application.'

'Issue Planning and Automation prompt that generates comprehensive project plans with Epic > Feature > Story/Enabler > Test hierarchy, dependencies, priorities, and automated tracking.'

'Test Planning and Quality Assurance prompt that generates comprehensive test strategies, task breakdowns, and quality validation plans for GitHub projects.'

'Containerize an ASP.NET .NET Framework project by creating Dockerfile and .dockerfile files customized for the project.'

'Containerize an ASP.NET Core project by creating Dockerfile and .dockerfile files customized for the project.'

'Prompt and workflow for generating conventional commit messages using a structured XML format. Guides users to create standardized, descriptive commit messages in line with the Conventional Commits specification, including instructions, examples, and validation.'

'Convert a text-based document to markdown following instructions from prompt, or if a documented option is passed, follow the instructions for that option.'

Use Copilot Spaces to bring curated, project-specific context into conversations. A Space is a shared collection of repositories, files, documentation, and instructions that grounds Copilot responses

'Prompt for generating an AGENTS.md file for a repository'

'Create a formal specification for an existing GitHub Actions CI/CD workflow, optimized for AI consumption and workflow maintenance.'

'Create an llms.txt file from scratch based on repository structure following the llms.txt specification at https://llmstxt.org/'

'Complete development kit for Microsoft 365 Copilot declarative agents with three comprehensive workflows (basic, advanced, validation), TypeSpec support, and Microsoft 365 Agents Toolkit integration'