Copilot CLI

What This Demonstrates

GitHub Copilot CLI is a first-party agentic coding tool for your terminal — install it with npm install -g @github/copilot, then run copilot. It runs interactive and autonomous sessions: answering questions about the codebase, proposing and applying changes, and showing diffs without leaving the command line.

Prerequisites

• Terminal open in the repository root
• GitHub Copilot CLI installed (npm install -g @github/copilot) and authenticated

Prompts

Prompt A — Repository Tour

Explain this monorepo structure and list the top 5 places I should inspect
before implementing a new backend service.

What to look for:

• Accurate description of the monorepo structure
• Key files identified (tsconfig.base.json, shared types, Docker configs)
• Actionable guidance (not just a file listing)

Prompt B — Safe Automation

Generate commands to run lint + unit tests only for `services/product-service`,
then explain likely failure categories and how to triage quickly.

What to look for:

• Correct --workspace syntax for npm
• Failure categories (type errors, missing mocks, database connection)
• Triage steps for each category

Prompt C — Change Proposal

Propose and apply a minimal change that improves developer experience in this
repo (for example scripts, docs, or local workflow). Show the diff and
rationale.

What to look for:

• A practical, non-breaking improvement
• Clear rationale for the change
• Actual file modifications (not just suggestions)

Follow-Up Prompts

• “Run the tests and explain any failures.”
• “What would you change to make this repo easier for a new contributor?”
• “Generate a git commit message for the changes you just made.”