What it does

This repo is a library of sample prompts and agent configurations for Microsoft’s various Copilots. Contributors submit working examples—plain prompts, system prompts for Copilot Studio agents, and SKILL.md files that teach GitHub Copilot multi-step tasks. Each sample includes a README, metadata JSON, and usually a screenshot. The samples feed into Microsoft’s M365 Solution Gallery for discoverability.

The interesting bit

The repo eats its own dog food: you can use GitHub Copilot itself to scaffold new contributions by saying “Create a new prompt sample” or “Scaffold a new skill.” It’s prompt engineering bootstrapped by prompt engineering. There’s also a formal schema for SKILL.md files, suggesting Microsoft is trying to standardize how developers teach Copilots reusable workflows.

Key highlights

• Three sample types: direct prompts, agent instructions (system prompts), and GitHub Copilot skills (SKILL.md)
• Community-driven, with contributions from both Microsoft product groups and the M365/ Power Platform community
• Built-in scaffolding via GitHub Copilot Chat commands in VS Code
• Metadata-driven: sample.json files feed the official M365 Solution Gallery
• Includes a schema spec for skill definitions

Caveats

• The README carries a blunt disclaimer: sample prompts “may not always be accurate or suitable for your specific use case”
• No quality bar or testing pipeline is described—curation appears manual
• 611 stars suggests modest reach; unclear how actively maintained beyond periodic community dumps

Verdict

Worth bookmarking if you live in the Microsoft Copilot ecosystem and want starter prompts or inspiration for agent design. Skip it if you’re looking for rigorous prompt engineering research or non-Microsoft tooling.