Custom agents, subagents and handoffs

GH-600 · Develop with AI agents · Updated

Build .agent.md files with tools, handoffs and subagents, and fix common failures such as an agent that cannot be invoked by an orchestrator.

This lesson is part of full GH-600 access

The first 2 GH-600 lessons are free. Full access opens every lesson with its practice questions, and the exam-style GH-600 question bank.

In this lesson
  • An agent file
  • Handoff vs subagent
  • Troubleshooting an orchestrator
  • Exam traps
  • Practice questions

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GH-600 course outline

All 7 lessons · Course overview
  1. Copilot agent mode vs the coding agentAgentic AI concepts on GitHub Free
  2. Custom instructions and agent filesAgentic AI concepts on GitHub Free
  3. Copilot CLI plan mode, commands and permissionsDevelop with AI agents Full access
  4. Custom agents, subagents and handoffsDevelop with AI agents Full access
  5. Coding agent setup, secrets and monitoringDevelop with AI agents Full access
  6. Rulesets and guardrails for agentsGovern and secure agentic workflows Full access
  7. Audit logs, autonomy levels and agent evaluationGovern and secure agentic workflows Full access