I Ran 5 AI Agents in Parallel With GitHub Copilot /fleet
You type one command. Five AI agents spin up and rewrite your entire codebase in parallel. GitHub Copilot /fleet just changed how we handle massive code migrations.
In this video, I deploy 5 parallel Copilot agents to migrate a legacy Angular app to Next.js 15 — with zero hallucinations and zero merge conflicts. I'll show you the exact plan.md structure that isolates agent boundaries, the agent.md permissions file that prevents catastrophic failures, and the context hygiene secret that makes /fleet drastically cheaper than a standard chat session.
0:00 The Instant Migration
0:15 The Single File Trap (why standard agents fail at scale)
0:32 Mapping the Mission (Angular → Next.js 15)
0:50 The Boundary Mistake (don't skip this step)
1:07 Architecting plan.md (the exact syntax)
1:27 The Whiteboard Analogy (context isolation explained)
1:44 Tool Restriction with agent.md
2:03 The Dry Run (--dry-run flag)
2:18 Executing the Fleet
2:35 The /tasks Dashboard (total observability)
2:53 Handling Agent Crashes (quarantined failures)
3:12 The Context Hygiene Secret (why /fleet saves tokens)
3:35 Reviewing Git Diffs (5 isolated branches)
3:53 Running the Tests
4:11 The Verdict + Next Week: Copilot vs Cursor
Tools & Resources
GitHub Copilot CLI /fleet docs: https://docs.github.com/en/copilot/co...
GitHub Blog — /fleet announcement: https://github.blog/ai-and-ml/github-...
Next.js 15 App Router migration guide: https://nextjs.org/docs/app/building-...
NextAuth v5 (Auth.js): https://authjs.dev/
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