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* feat: add cli-mastery skill — interactive Copilot CLI training Adds cli-mastery, an interactive training system for the GitHub Copilot CLI. 8 modules covering slash commands, keyboard shortcuts, modes, agents, skills, MCP, configuration, and advanced techniques. Includes scenario challenges, a final exam, XP/leveling system, and SQL-based progress tracking. Source: https://github.com/DUBSOpenHub/copilot-cli-mastery (MIT) Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> * fix: address review feedback on frontmatter and consistency - Switch description from folded block scalar (>) to single-quoted string per AGENTS.md documented format - Fix Module 7 heading: backtick-wrap @ separately from 'file mentions' to avoid implying '@ file mentions' is a literal command - Fix Final Exam Q6: change '@ + filename' to '@filename' with example to match the @src/auth.ts syntax taught in modules - Fix Final Exam Q7: add GEMINI.md to match Module 7 precedence list Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> * fix: rename curriculum/ to references/ per agentskills.io spec Addresses review feedback from @aaronpowell on PR #915. The Agent Skills specification defines references/ as the standard directory for supplementary documentation that agents read on demand. - Renamed skills/cli-mastery/curriculum/ → references/ - Updated all path references in SKILL.md - Updated asset paths in docs/README.skills.md Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> --------- Co-authored-by: DUBSOpenHub <DUBSOpenHub@users.noreply.github.com> Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Module 6: MCP Integration
What is MCP?
- Model Context Protocol — a standard for connecting AI to external tools
- Think of it as "USB ports for AI" — plug in any compatible tool
- The GitHub MCP server is built-in (search repos, issues, PRs, actions)
Key commands
| Command | What it does |
|---|---|
/mcp |
List connected MCP servers |
/mcp add <name> <command> |
Add a new MCP server |
Popular MCP servers
@modelcontextprotocol/server-postgres— Query PostgreSQL databases@modelcontextprotocol/server-sqlite— Query SQLite databases@modelcontextprotocol/server-filesystem— Access local files with permissions@modelcontextprotocol/server-memory— Persistent knowledge graph@modelcontextprotocol/server-puppeteer— Browser automation
Configuration
| Level | File |
|---|---|
| User | ~/.copilot/mcp-config.json |
| Project | .github/mcp-config.json |
Config file format
{
"mcpServers": {
"my-server": {
"command": "npx",
"args": ["@modelcontextprotocol/server-postgres", "{{env.DATABASE_URL}}"],
"env": { "NODE_ENV": "development" }
}
}
}
Security best practices
- Never put credentials directly in config files
- Use environment variable references:
{{env.SECRET}} - Review MCP server source before using
- Only connect servers you actually need