From CLI to PR: Automating the path to merged code | BRK203

Cassidy Williams and Evan Boyle demonstrate an end-to-end agentic workflow with GitHub Copilot, moving from terminal-based planning through delegated execution and automated pull request review. The session focuses on practical mechanics like context management, Copilot CLI features (including voice and speech-to-text), and controlling cost/efficiency with token budgeting.

Overview

This Microsoft Build 2026 breakout (BRK203) shows how to apply GitHub Copilot as an agentic partner in day-to-day sprint work, using a live-coded workflow that goes from CLI planning to merged code.

Key areas covered:

From terminal planning to PR automation

• A full workflow that starts in the terminal and ends with a pull request that can be reviewed and merged.
• Emphasis on making agentic workflows practical in real sprint execution rather than staying at the “chat-only” layer.

Copilot CLI agentic mechanics

• Using built-in agents and adding skills in the CLI.
• New CLI commands highlighted in the session:
  • research
  • experimental (including voice mode)

Voice and speech-to-text in the CLI

• Introduction of voice mode.
• Speech-to-text functionality for interacting with the CLI.

Scheduling and repeatable automation

• Introduction of an /every automation command for scheduling tasks.

Planning patterns and tooling integration

• Integration of Spec Kit with Plan Mode.

Cost/efficiency controls

• Token budgeting and efficiency controls for AI-driven tasks.

Resources

• Session page and related links: https://aka.ms/build26/BRK203